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Automated detection of schizophrenia using optimal wavelet-based $$l_1$$ l 1 norm features extracted from single-channel EEG Cogn. Neurodyn. (IF 3.925) Pub Date : 2021-01-15 Manish Sharma, U. Rajendra Acharya
Schizophrenia (SZ) is a mental disorder, which affects the ability of human thinking, memory, and way of living. Manual screening of SZ patients is tedious, laborious and prone to human errors. Hence, we developed a computer-aided diagnosis (CAD) system to diagnose SZ patients accurately using single-channel electroencephalogram (EEG) signals. The EEG signals are nonlinear and non-stationary. Hence
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Network mechanism for insect olfaction Cogn. Neurodyn. (IF 3.925) Pub Date : 2021-01-15 Pamela B. Pyzza, Katherine A. Newhall, Gregor Kovačič, Douglas Zhou, David Cai
Early olfactory pathway responses to the presentation of an odor exhibit remarkably similar dynamical behavior across phyla from insects to mammals, and frequently involve transitions among quiescence, collective network oscillations, and asynchronous firing. We hypothesize that the time scales of fast excitation and fast and slow inhibition present in these networks may be the essential element underlying
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Distinct brain oscillatory responses for the perception and identification of one’s own body from other’s body Cogn. Neurodyn. (IF 3.925) Pub Date : 2021-01-08 Samet Çelik, Rümeysa Büşra Doğan, Cennet Sena Parlatan, Bahar Güntekin
The body recognition process includes complex visual processing, the sensation, perception, and distinction stages of the stimulus. This study examined this process by using the time–frequency analysis of EEG signals and analyzed the obtained data by using the event-related oscillations method. This study aimed to examine the oscillatory brain responses and distinguish one’s own body from other’s body
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Sharp decrease in the Laplacian matrix rank of phase-space graphs: a potential biomarker in epilepsy Cogn. Neurodyn. (IF 3.925) Pub Date : 2021-01-07 Zecheng Yang, Denggui Fan, Qingyun Wang, Guoming Luan
In this paper, phase space reconstruction from stereo-electroencephalography data of ten patients with focal epilepsy forms a series of graphs. Those obtained graphs reflect the transition characteristics of brain dynamical system from pre-seizure to seizure of epilepsy. Interestingly, it is found that the rank of Laplacian matrix of these graphs has a sharp decrease when a seizure is close to happen
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Correction to: Prediction of numbers of the accumulative confirmed patients (NACP) and the plateau phase of 2019-nCoV in China Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-12-18 Lijun Pei
The article “Prediction of numbers of the accumulative confirmed patients (NACP) and the plateau phase of 2019-nCoV in China”, written by Lijun Pei was originally published Online First without Open Access.
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Spike-sorting analysis of neural electrical signals evoked by acupuncture based on model Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-28 Qing Qin, Yajiao Liu, Bonan Shan, Yanqiu Che, Chunxiao Han, Yingmei Qin, Ruofan Wang, Jiang Wang
Acupuncturing the Zusanli (ST 36) point with different types of manual acupuncture manipulations (MAs) and different frequencies can evoke a lot of neural response activities in spinal dorsal root neurons. The action potential is the basic unit of communication in the neural response process. With the rapid development of the electrode acquisition technology, we can simultaneously obtain neural electrical
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A dynamical model for the basal ganglia-thalamo-cortical oscillatory activity and its implications in Parkinson’s disease Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-25 Eva M. Navarro-López, Utku Çelikok, Neslihan S. Şengör
We propose to investigate brain electrophysiological alterations associated with Parkinson’s disease through a novel adaptive dynamical model of the network of the basal ganglia, the cortex and the thalamus. The model uniquely unifies the influence of dopamine in the regulation of the activity of all basal ganglia nuclei, the self-organised neuronal interdependent activity of basal ganglia-thalamo-cortical
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Investigating the effect of age and gender of users on improving spirituality by using EEG Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-24 Jamal-e-Din MahdiNejad, Hamidreza Azemati, Ali Sadeghi habibabad, Pietro Matracchi
The current study aims to examine the effect of age and gender of users on spirituality by using an experiment. Literature believes that age and gender have a huge effect on increased or decreased spirituality. The current study aims to examine these theories by a scientific and rational method and using cognitive neuroscience (recording electroencephalograph). In order to do this, an electroencephalograph
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Memory retention in pyramidal neurons: a unified model of energy-based homo and heterosynaptic plasticity with homeostasis Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-17 Huanwen Chen, Lijuan Xie, Yijun Wang, Hang Zhang
The brain can learn new tasks without forgetting old ones. This memory retention is closely associated with the long-term stability of synaptic strength. To understand the capacity of pyramidal neurons to preserve memory under different tasks, we established a plasticity model based on the postsynaptic membrane energy state, in which the change in synaptic strength depends on the difference between
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The theoretical mechanism of Parkinson’s oscillation frequency bands: a computational model study Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-12 Bing Hu, Minbo Xu, Zhizhi Wang, Danhua Jiang, Dingjiang Wang, Dongmei Zhang
Excessive synchronous oscillation activities appear in the brain is a key pathological feature of Parkinson’s disease, the mechanism of which is still unclear. Although some previous studies indicated that \(\beta\) oscillation (13–30 Hz) may directly originate in the network composed of the subthalamic nucleus (STN) and external globus pallidus (GPe) neurons, specific onset mechanisms of which are
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Bilinear neural network with 3-D attention for brain decoding of motor imagery movements from the human EEG Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-10 Chen-Chen Fan, Hongjun Yang, Zeng-Guang Hou, Zhen-Liang Ni, Sheng Chen, Zhijie Fang
Deep learning has achieved great success in areas such as computer vision and natural language processing. In the past, some work used convolutional networks to process EEG signals and reached or exceeded traditional machine learning methods. We propose a novel network structure and call it QNet. It contains a newly designed attention module: 3D-AM, which is used to learn the attention weights of EEG
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A novel index of functional connectivity: phase lag based on Wilcoxon signed rank test Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-04 Xuan Li, Yunqiao Wu, Mengting Wei, Yiyun Guo, Zhenhua Yu, Haixian Wang, Zhanli Li, Hui Fan
Phase synchronization has been an effective measurement of functional connectivity, detecting similar dynamics over time among distinct brain regions. However, traditional phase synchronization-based functional connectivity indices have been proved to have some drawbacks. For example, the phase locking value (PLV) index is sensitive to volume conduction, while the phase lag index (PLI) and the weighted
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Construction of embedded fMRI resting-state functional connectivity networks using manifold learning Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-03 Ioannis K. Gallos, Evangelos Galaris, Constantinos I. Siettos
We construct embedded functional connectivity networks (FCN) from benchmark resting-state functional magnetic resonance imaging (rsfMRI) data acquired from patients with schizophrenia and healthy controls based on linear and nonlinear manifold learning algorithms, namely, Multidimensional Scaling, Isometric Feature Mapping, Diffusion Maps, Locally Linear Embedding and kernel PCA. Furthermore, based
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Effects of exercise programs on neuroelectric dynamics in drug addiction Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-11-02 Yingzhi Lu, Xiaoying Qi, Qi Zhao, Yifan Chen, Yanjiang Liu, Xiawen Li, Yuguo Yu, Chengling Zhou
Exercise interventions have been considered to be an effective treatment for drug addiction. However, there is little dirct evidence that exercise affects brain activity in individuals afftected by drug addiction. Therefore, the aim of the present study was to investigate the effects of different exercise programs on detoxification. Cognitive recovery with 64-channel electroencephalography (EEG) recordings
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Physiological properties of Cantor coding-like iterated function system in the hippocampal CA1 network Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-10-29 Yasuhiro Fukushima, Yutaka Yamaguti, Shigeru Kuroda, Takeshi Aihara, Ichiro Tsuda, Minoru Tsukada
Cantor coding provides an information coding scheme for temporal sequences of events. In the hippocampal CA3–CA1 network, Cantor coding-like mechanism was observed in pyramidal neurons and the relationship between input pattern and recorded responses could be described as an iterated function system. However, detailed physiological properties of the system in CA1 remain unclear. Here, we performed
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EEG power spectral density in locked-in and completely locked-in state patients: a longitudinal study Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-10-23 Arianna Secco, Alessandro Tonin, Aygul Rana, Andres Jaramillo-Gonzalez, Majid Khalili-Ardali, Niels Birbaumer, Ujwal Chaudhary
Persons with their eye closed and without any means of communication is said to be in a completely locked-in state (CLIS) while when they could still open their eyes actively or passively and have some means of communication are said to be in locked-in state (LIS). Two patients in CLIS without any means of communication, and one patient in the transition from LIS to CLIS with means of communication
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Study of EEG microstates in Parkinson’s disease: a potential biomarker? Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-10-19 Anita Pal, Madhuri Behari, Vinay Goyal, Ratna Sharma
The spontaneous activity of the brain is dynamic even at rest and the deviation from this normal pattern of dynamics can lead to different pathological states. EEG microstate analysis of resting-state neuronal activity in Parkinson’s disease (PD) could provide insight into altered brain dynamics of patients exhibiting dementia. Resting-state EEG microstate maps were derived from 128 channel EEG data
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Speech signal analysis of alzheimer’s diseases in farsi using auditory model system Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-10-13 Maryam Momeni, Mahdiyeh Rahmani
In recent years, extensive studies have been conducted on the diagnosis of Alzheimer's disease (AD) using the non-invasive speech signal recognition method. In this study, Farsi speech signals were analyzed using the auditory model system (AMS) in order to recognize AD. For this purpose, after the pre-processing of the speech signals and utilizing AMS, 4D outputs as function of time, frequency, rate
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An automatic EEG-based sleep staging system with introducing NAoSP and NAoGP as new metrics for sleep staging systems Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-10-12 Mesut Melek, Negin Manshouri, Temel Kayikcioglu
Different biological signals are recorded in sleep labs during sleep for the diagnosis and treatment of human sleep problems. Classification of sleep stages with electroencephalography (EEG) is preferred to other biological signals due to its advantages such as providing clinical information, cost-effectiveness, comfort, and ease of use. The evaluation of EEG signals taken during sleep by clinicians
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Geometrical features of lips using the properties of parabola for recognizing facial expression Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-10-12 V. Suma Avani, S. G. Shaila, A. Vadivel
Various real-time applications such as Human–Computer Interactions, Psychometric analysis, etc. use facial expressions as one of the important parameters. The researchers have used Action Units (AU) of the face as feature points and its deformation is compared with the reference points on the face to estimate the facial expressions. Among many parts of the face, features from the mouth contribute largely
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Recognition of cognitive load with a stacking network ensemble of denoising autoencoders and abstracted neurophysiological features Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-10-07 Zixuan Cao, Zhong Yin, Jianhua Zhang
The safety of human–machine systems can be indirectly evaluated based on operator’s cognitive load levels at each temporal instant. However, relevant features of cognitive states are hidden behind in multiple sources of cortical neural responses. In this study, we developed a novel neural network ensemble, SE-SDAE, based on stacked denoising autoencoders (SDAEs) which identify different levels of cognitive
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The thermodynamic brain and the evolution of intellect: the role of mental energy Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-09-25 Eva Déli, Zoltán Kisvárday
The living state is low entropy, highly complex organization, yet it is part of the energy cycle of the environment. Due to the recurring presence of the resting state, stimulus and its response form a thermodynamic cycle of perception that can be modeled by the Carnot engine. The endothermic reversed Carnot engine relies on energy from the environment to increase entropy (i.e., the synaptic complexity
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Functional-pathway-dominant contrast adaptation and sensitization in mouse retinal ganglion cells Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-09-24 Min Dai, Pei-Ji Liang
Retinal ganglion cells (RGCs) reduce their light sensitivity during persistent high-contrast stimulation to prevent saturation to strong inputs and improve coding efficiency. This process is known as contrast adaptation. However, contrast adaptation also reduces RGCs’ light response to weak inputs. On the other hand, some RGCs undergo contrast sensitization, and these RGCs respond to weak inputs following
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Aperiodic stochastic resonance in neural information processing with Gaussian colored noise Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-09-18 Yanmei Kang, Ruonan Liu, Xuerong Mao
The aim of this paper is to explore the phenomenon of aperiodic stochastic resonance in neural systems with colored noise. For nonlinear dynamical systems driven by Gaussian colored noise, we prove that the stochastic sample trajectory can converge to the corresponding deterministic trajectory as noise intensity tends to zero in mean square, under global and local Lipschitz conditions, respectively
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Cross-frequency and iso-frequency estimation of functional corticomuscular coupling after stroke Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-09-16 Ping Xie, Xiaohui Pang, Shengcui Cheng, Yuanyuan Zhang, Yinan Yang, Xiaoli Li, Xiaoling Chen
Functional corticomuscular coupling (FCMC) between the brain and muscles has been used for motor function assessment after stroke. Two types, iso-frequency coupling (IFC) and cross-frequency coupling (CFC), are existed in sensory-motor system for healthy people. However, in stroke, only a few studies focused on IFC between electroencephalogram (EEG) and electromyogram (EMG) signals, and no CFC studies
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EEG-based emotion recognition using 4D convolutional recurrent neural network Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-09-14 Fangyao Shen, Guojun Dai, Guang Lin, Jianhai Zhang, Wanzeng Kong, Hong Zeng
In this paper, we present a novel method, called four-dimensional convolutional recurrent neural network, which integrating frequency, spatial and temporal information of multichannel EEG signals explicitly to improve EEG-based emotion recognition accuracy. First, to maintain these three kinds of information of EEG, we transform the differential entropy features from different channels into 4D structures
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Prior cortical activity differences during an action observation plus motor imagery task related to motor adaptation performance of a coordinated multi-limb complex task Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-09-10 J. Ignacio Serrano, Daniel Muñoz-García, Raúl Ferrer-Peña, Victor D’eudeville, Marta Brero, Maxime Boisson, M. Dolores del Castillo
Motor adaptation is the ability to develop new motor skills that makes performing a consolidated motor task under different psychophysical conditions possible. There exists a proven relationship between prior brain activity at rest and motor adaptation. However, the brain activity at rest is highly variable both between and within subjects. Here we hypothesize that the cortical activity during the
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Functional biodynamics of human-body system: A mathematical axiomatics with functional learning and aging in life cycle Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-09-05 Jochen Mau
“Systems neuroergonomics” (Mau, J. In: R. Wang and X. Pan, editors, Advances in Cognitive Neurodynamics (V), chapter 59, pages 431–437, Springer Science+Business Media, Singapore, 2016) showed a separation of human-body system’s functional organization from its cellular material in order to open a holistic perspective that can comprise all body functions. This was achieved with a strictly hierarchical
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Characterizing the brain’s dynamical response from scalp-level neural electrical signals: a review of methodology development Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-09-04 Guang Ouyang, Changsong Zhou
The brain displays dynamical system behaviors at various levels that are functionally and cognitively relevant. Ample researches have examined how the dynamical properties of brain activity reflect the neural cognitive working mechanisms. A prevalent approach in this field is to extract the trial-averaged brain electrophysiological signals as a representation of the dynamical response of the complex
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Brain functional network modeling and analysis based on fMRI: a systematic review Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-08-31 Zhongyang Wang, Junchang Xin, Zhiqiong Wang, Yudong Yao, Yue Zhao, Wei Qian
In recent years, the number of patients with neurodegenerative diseases (i.e., Alzheimer’s disease, Parkinson’s disease, mild cognitive impairment) and mental disorders (i.e., depression, anxiety and schizophrenia) have increased dramatically. Researchers have found that complex network analysis can reveal the topology of brain functional networks, such as small-world, scale-free, etc. In the study
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Brain connectivity analysis in fathers of children with autism Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-08-31 Vida Mehdizadehfar, Farnaz Ghassemi, Ali Fallah, Iman Mohammad-Rezazadeh, Hamidreza Pouretemad
Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder in which changes in brain connectivity, associated with autistic-like traits in some individuals. First-degree relatives of children with autism may show mild deficits in social interaction. The present study investigates electroencephalography (EEG) brain connectivity patterns of the fathers who have children with autism while performing
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Complex networks and deep learning for EEG signal analysis Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-08-29 Zhongke Gao, Weidong Dang, Xinmin Wang, Xiaolin Hong, Linhua Hou, Kai Ma, Matjaž Perc
Electroencephalogram (EEG) signals acquired from brain can provide an effective representation of the human’s physiological and pathological states. Up to now, much work has been conducted to study and analyze the EEG signals, aiming at spying the current states or the evolution characteristics of the complex brain system. Considering the complex interactions between different structural and functional
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Balanced difficulty task finder: an adaptive recommendation method for learning tasks based on the concept of state of flow Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-08-27 Anis Yazidi, Asieh Abolpour Mofrad, Morten Goodwin, Hugo Lewi Hammer, Erik Arntzen
An adaptive task difficulty assignment method which we reckon as balanced difficulty task finder (BDTF) is proposed in this paper. The aim is to recommend tasks to a learner using a trade-off between skills of the learner and difficulty of the tasks such that the learner experiences a state of flow during the learning. Flow is a mental state that psychologists refer to when someone is completely immersed
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Anti-control of periodic firing in HR model in the aspects of position, amplitude and frequency Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-08-25 Tao Dong, Huiyun Zhu
This paper proposes a novel controller to control position, amplitude and frequency of periodic firing activity in Hindmarsh–Rose model based on Hopf bifurcation theory which is composed of linear control gain and nonlinear control gain. First, we select the activation of the fast ion channel as control parameter. Based on explicit criterion of Hopf bifurcation, a series of conditions are obtained
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Fast fronto-parietal cortical dynamics of conflict detection and context updating in a flanker task Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-08-24 Christopher R. Brydges, Francisco Barceló, An T. Nguyen, Allison M. Fox
Recent research has found that the traditional target P3 consists of a family of P3-like positivities that can be functionally and topographically dissociated from one another. The current study examined target N2 and P3-like subcomponents indexing conflict detection and context updating at low- and high-order levels in the neural hierarchy during cognitive control. Electroencephalographic signals
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Portrait of visual cortical circuits for generating neural oscillation dynamics Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-08-10 Yuan Zhang, Xiaohui Zhang
The mouse primary visual cortex (V1) has emerged as a classical system to study neural circuit mechanisms underlying visual function and plasticity. A variety of efferent-afferent neuronal connections exists within the V1 and between the V1 and higher visual cortical areas or thalamic nuclei, indicating that the V1 system is more than a mere receiver in information processing. Sensory representations
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A brain-inspired compact cognitive mapping system Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-30 Taiping Zeng, Bailu Si
In many simultaneous localization and mapping (SLAM) systems, the map of the environment grows over time as the robot explores the environment. The ever-growing map prevents long-term mapping, especially in large-scale environments. In this paper, we develop a compact cognitive mapping approach inspired by neurobiological experiments. Mimicking the firing activities of neighborhood cells, neighborhood
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Filter bank temporally local canonical correlation analysis for short time window SSVEPs classification Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-29 Xinghan Shao, Mingxing Lin
Canonical correlation analysis (CCA) method and its extended methods have been widely and successfully applied to the frequency recognition in SSVEP-based BCI systems. As a state-of-the-art extended method, filter bank canonical correlation analysis has higher accuracy and information transmission rate (ITR) than CCA. However, in the CCA method, the temporally local structure of samples has not been
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Dependency analysis of frequency and strength of gamma oscillations on input difference between excitatory and inhibitory neurons Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-28 Xiaochun Gu, Fang Han, Zhijie Wang
It has been found that gamma oscillations and the oscillation frequencies are regulated by the properties of external stimuli in many biology experimental researches. To unveil the underlying mechanism, firstly, we reproduced the experimental observations in an excitatory/inhibitory (E/I) neuronal network that the oscillation became stronger and moved to a higher frequency band (gamma band) with the
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Major depressive disorder diagnosis based on effective connectivity in EEG signals: a convolutional neural network and long short-term memory approach Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-26 Abdolkarim Saeedi, Maryam Saeedi, Arash Maghsoudi, Ahmad Shalbaf
Deep learning techniques have recently made considerable advances in the field of artificial intelligence. These methodologies can assist psychologists in early diagnosis of mental disorders and preventing severe trauma. Major Depression Disorder (MDD) is a common and serious medical condition whose exact manifestations are not fully understood. So, early discovery of MDD patients helps to cure or
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Electroencephalographic correlates of body shape concerns: an eLORETA functional connectivity study Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-23 Claudio Imperatori, Angelo Panno, Marta Giacchini, Chiara Massullo, Giuseppe Alessio Carbone, Massimo Clerici, Benedetto Farina, Antonios Dakanalis
The main aim of the present study was to investigate the association between body shape concerns and electroencephalography (EEG) functional connectivity within body image network in a sample of university students (N = 68). EEG was recorded during 5 min of resting state. All participants were asked to complete self-report measures assessing certain psychopathological dimensions (i.e., body shape concerns
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Chaotic time series prediction using phase space reconstruction based conceptor network Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-23 Anguo Zhang, Zheng Xu
The Conceptor network is a new framework of reservoir computing (RC), in addition to the features of easy training, global convergence, it can online learn new classes of input patterns without complete re-learning from all the training data. The conventional connection topology and weights of the hidden layer (reservoir) of RC are initialized randomly, and are fixed to be no longer fine-tuned after
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Brain–computer interface method based on light-flashing and motion hybrid coding Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-16 Wenqiang Yan, Guanghua Xu
The human best response frequency band for steady-state visual evoked potential stimulus is limited. This results in a reduced number of encoded targets. To circumvent this, we proposed a brain–computer interface (BCI) method based on light-flashing and motion hybrid coding. The hybrid paradigm pattern consisted of a circular light-flashing pattern and a motion pattern located in the inner ring of
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Assessing cognitive load in adolescent and adult students using photoplethysmogram morphometrics Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-14 Qi Xuan, Jinxiao Wu, Jianjun Shen, Xiangyang Ji, Yongqiang Lyu, Yu Zhang
Compared to cardiac parameters and skin conductivities, the photoplethysmogram (PPG) recorded at fingertips and other parts near to peripheral nerve ends have been recently revealed to be yet another sensitive measure for cognitive load assessment. However, there is so far no research on measuring adolescents’ cognitive load using physiological signals. A comprehensive study on the effects of PPG morphometrics
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End-to-end face parsing via interlinked convolutional neural networks Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-13 Zi Yin, Valentin Yiu, Xiaolin Hu, Liang Tang
Face parsing is an important computer vision task that requires accurate pixel segmentation of facial parts (such as eyes, nose, mouth, etc.), providing a basis for further face analysis, modification, and other applications. Interlinked Convolutional Neural Networks (iCNN) was proved to be an effective two-stage model for face parsing. However, the original iCNN was trained separately in two stages
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Localizing confined epileptic foci in patients with an unclear focus or presumed multifocality using a component-based EEG-fMRI method Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-10 Elias Ebrahimzadeh, Mohammad Shams, Ali Rahimpour Jounghani, Farahnaz Fayaz, Mahya Mirbagheri, Naser Hakimi, Lila Rajabion, Hamid Soltanian-Zadeh
Precise localization of epileptic foci is an unavoidable prerequisite in epilepsy surgery. Simultaneous EEG-fMRI recording has recently created new horizons to locate foci in patients with epilepsy and, in comparison with single-modality methods, has yielded more promising results although it is still subject to limitations such as lack of access to information between interictal events. This study
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Primal-size neural circuits in meta-periodic interaction Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-01 Yoram Baram
Experimental observations of simultaneous activity in large cortical areas have seemed to justify a large network approach in early studies of neural information codes and memory capacity. This approach has overlooked, however, the segregated nature of cortical structure and functionality. Employing graph-theoretic results, we show that, given the estimated number of neurons in the human brain, there
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Synaptic dendritic activity modulates the single synaptic event Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-07-01 Vito Di Maio, Silvia Santillo, Francesco Ventriglia
Synaptic transmission is the key system for the information transfer and elaboration among neurons. Nevertheless, a synapse is not a standing alone structure but it is a part of a population of synapses inputting the information from several neurons on a specific area of the dendritic tree of a single neuron. This population consists of excitatory and inhibitory synapses the inputs of which drive the
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Application of expert system and LSTM in extracting index of synaptic plasticity Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-29 Shaokai Zhao, Yingchun Shang, Ze Yang, Xi Xiao, Jianhai Zhang, Tao Zhang
The indexes of synaptic plasticity, including long-term potentiation (LTP) and long-term depression (LTD), can usually be measured by evaluating the slope and/or magnitude of field excitatory postsynaptic potentials (fEPSPs). So far, the process depends on manually labeling the linear portion of fEPSPs one by one, which is not only a subjective procedure but also a time-consuming job. In the present
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Novel channel selection method based on position priori weighted permutation entropy and binary gravity search algorithm Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-26 Hao Sun, Jing Jin, Wanzeng Kong, Cili Zuo, Shurui Li, Xingyu Wang
Brain-computer interface (BCI) system based on motor imagery (MI) usually adopts multichannel Electroencephalograph (EEG) signal recording method. However, EEG signals recorded in multi-channel mode usually contain many redundant and artifact information. Therefore, selecting a few effective channels from whole channels may be a means to improve the performance of MI-based BCI systems. We proposed
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A neural network model of basal ganglia’s decision-making circuitry Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-24 Xiyuan Chen, Tianming Yang
The basal ganglia have been increasingly recognized as an important structure involved in decision making. Neurons in the basal ganglia were found to reflect the evidence accumulation process during decision making. However, it is not well understood how the direct and indirect pathways of the basal ganglia work together for decision making. Here, we create a recurrent neural network model that is
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Deterministic characteristics of spontaneous activity detected by multi-fractal analysis in a spiking neural network with long-tailed distributions of synaptic weights Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-24 Sou Nobukawa, Nobuhiko Wagatsuma, Haruhiko Nishimura
Cortical neural networks maintain autonomous electrical activity called spontaneous activity that represents the brain’s dynamic internal state even in the absence of sensory stimuli. The spatio-temporal complexity of spontaneous activity is strongly related to perceptual, learning, and cognitive brain functions; multi-fractal analysis can be utilized to evaluate the complexity of spontaneous activity
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Complex bifurcation analysis and synchronization optimal control for Hindmarsh–Rose neuron model under magnetic flow effect Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-23 Marcel Kemayou Wouapi, Bertrand Hilaire Fotsin, Elie Bertrand Megam Ngouonkadi, Florent Feudjio Kemwoue, Zeric Tabekoueng Njitacke
In this contribution, the complex behaviour of the Hindmarsh–Rose neuron model under magnetic flow effect (mHR) is investigated in terms of bifurcation diagrams, Lyapunov exponent plots and time series when varying only the electromagnetic induction strength. Some exciting phenomena are found including, for instance, various firings patterns by applying appropriate magnetic strength and Hopf-fold bursting
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Probabilistically segregated neural circuits and subcritical linguistics Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-19 Yoram Baram
Early studies of cortical information codes and memory capacity have assumed large neural networks, which, subject to evenly probable binary (on/off) activity, were found to be endowed with large storage and retrieval capacities under the Hebbian paradigm. Here, we show that such networks are plagued with exceedingly high cross-network connectivity, yielding long code words, which are linguistically
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A neuro-inspired general framework for the evolution of stochastic dynamical systems: Cellular automata, random Boolean networks and echo state networks towards criticality Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-11 Sidney Pontes-Filho, Pedro Lind, Anis Yazidi, Jianhua Zhang, Hugo Hammer, Gustavo B. M. Mello, Ioanna Sandvig, Gunnar Tufte, Stefano Nichele
Although deep learning has recently increased in popularity, it suffers from various problems including high computational complexity, energy greedy computation, and lack of scalability, to mention a few. In this paper, we investigate an alternative brain-inspired method for data analysis that circumvents the deep learning drawbacks by taking the actual dynamical behavior of biological neural networks
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A novel facial attractiveness evaluation system based on face shape, facial structure features and skin Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-04 Jian Zhao, Miao Zhang, Chen He, Xie Xie, Jiaming Li
Facial attractiveness is an important research direction of genetic psychology and cognitive psychology, and its results are significant for the study of face evolution and human evolution. However, previous studies have not put forward a comprehensive evaluation system of facial attractiveness. Traditionally, the establishment of facial attractiveness evaluation system was based on facial geometric
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A stacked sparse auto-encoder and back propagation network model for sensory event detection via a flexible ECoG Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-06-01 Oluwagbenga Paul Idowu, Jianping Huang, Yang Zhao, Oluwarotimi William Samuel, Mei Yu, Peng Fang, Guanglin Li
Current prostheses are limited in their ability to provide direct sensory feedback to users with missing limb. Several efforts have been made to restore tactile sensation to amputees but the somatotopic tactile feedback often results in unnatural sensations, and it is yet unclear how and what information the somatosensory system receives during voluntary movement. The present study proposes an efficient
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Coherence resonance for neuronal bursting with spike undershoot Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-05-30 Ben Cao, Runxia Wang, Huaguang Gu, Yuye Li
Although the bursting patterns with spike undershoot are involved with the achievement of physiological or cognitive functions of brain with synaptic noise, noise induced-coherence resonance (CR) from resting state or subthreshold oscillations instead of bursting has been widely identified to play positive roles in information process. Instead, in the present paper, CR characterized by the increase
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Energy features in spontaneous up and down oscillations Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-05-29 Yihong Wang, Xuying Xu, Rubin Wang
Spontaneous brain activities consume most of the brain’s energy. So if we want to understand how the brain operates, we must take into account these spontaneous activities. Up and down transitions of membrane potentials are considered to be one of significant spontaneous activities. This kind of oscillation always shows bistable and bimodal distribution of membrane potentials. Our previous theoretical
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A dynamic center and multi threshold point based stable feature extraction network for driver fatigue detection utilizing EEG signals Cogn. Neurodyn. (IF 3.925) Pub Date : 2020-05-25 Turker Tuncer, Sengul Dogan, Fatih Ertam, Abdulhamit Subasi
Driver fatigue is the one of the main reasons of the traffic accidents. The human brain is a complex structure, whose function can be evaluated with electroencephalogram (EEG). Automated driver fatigue detection utilizing EEG decreases the incidence probability of related traffic accidents. Therefore, devising an appropriate feature extraction technique and selecting a competent classification method
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