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Ears on the Hand: Reaching Three-Dimensional Targets With an Audio-Motor Device
Multisensory Research ( IF 1.6 ) Pub Date : 2020-03-17 , DOI: 10.1163/22134808-20191436
Sylvain Hanneton 1 , Thomas Hoellinger 2 , Vincent Forma 3 , Agnes Roby-Brami 4, 5 , Malika Auvray 4
Affiliation  

Understanding the processes underlying sensorimotor coupling with the environment is crucial for sensorimotor rehabilitation and sensory substitution. In doing so, devices which provide novel sensory feedback consequent to body movement may be optimized in order to enhance motor performance for particular tasks. The aim of the study reported here was to investigate audio-motor coupling when the auditory experience is linked to movements of the head or the hands. The participants had to localize and reach a virtual source with the dominant hand in response to sounds. An electromagnetic system recorded the position and orientation of the participants' head and hands. This system was connected to a 3D audio system that provided binaural auditory feedback on the position of the virtual listener located on the participants' body. The listener's position was computed either from the hands or from the head. For the hand condition, the virtual listener was placed on the dominant hand (the one used to reach the target) in Experiment 1 and on the non-dominant hand, which was constrained in order to have similar amplitude and degrees of freedom as that of the head, in Experiment 2. The results revealed that, in the two experiments, the participants were able to localize a source within the 3D auditory environment. Performance varied as a function of the effector's degrees of freedom and the spatial coincidence between sensor and effector. The results also allowed characterizing the kinematics of the hand and head and how they change with audio-motor coupling condition and practice.

中文翻译:

手上的耳朵:用音频电机设备达到三维目标

了解感觉运动与环境耦合的过程对于感觉运动的康复和感觉替代至关重要。这样做时,可以优化由于身体运动而提供新颖的感觉反馈的设备,以增强特定任务的运动性能。此处报道的研究目的是研究听觉体验与头部或手部运动有关时的音频-电机耦合。参与者必须本地化并使用占优势的手来响应声音而到达虚拟源。电磁系统记录了参与者头部和手的位置和方向。该系统连接到3D音频系统,该系统对位于参与者身体上的虚拟侦听器的位置提供双耳听觉反馈。聆听者的位置是通过手或头部来计算的。对于手部状况,在实验1中将虚拟听众放在优势手(用于到达目标的那只手)上,并置于非优势手上,将其进行限制以使其振幅和自由度与头部,在实验2中。结果显示,在两个实验中,参与者能够在3D听觉环境中定位源。性能根据效应器的自由度和传感器与效应器之间的空间一致性而变化。结果还可以表征手部和头部的运动学,以及它们如何随着音频马达耦合条件和练习的变化而变化。在实验1中,虚拟听众被置于占主导地位的手(用来达到目标​​的那只手)上,而在非占主导地位的手则受到了限制,以使其具有与头部类似的振幅和自由度。 2.结果表明,在两个实验中,参与者能够在3D听觉环境中定位一个源。性能根据效应器的自由度和传感器与效应器之间的空间一致性而变化。结果还可以表征手和头部的运动学,以及它们如何随着音频-电机耦合条件和练习的变化而变化。在实验1中,虚拟听众被置于占主导地位的手(用来达到目标​​的那只手)上,而在非占主导地位的手则受到了限制,以使其具有与头部类似的振幅和自由度。 2.结果表明,在两个实验中,参与者能够在3D听觉环境中定位一个源。性能根据效应器的自由度以及传感器和效应器之间的空间一致性而变化。结果还可以表征手部和头部的运动学,以及它们如何随着音频马达耦合条件和练习的变化而变化。在实验2中对其进行了限制,以使其具有与头部类似的幅度和自由度。结果显示,在两个实验中,参与者能够在3D听觉环境中定位声源。性能根据效应器的自由度和传感器与效应器之间的空间一致性而变化。结果还可以表征手部和头部的运动学,以及它们如何随着音频马达耦合条件和练习的变化而变化。在实验2中对其进行了限制,以使其具有与头部类似的幅度和自由度。结果显示,在两个实验中,参与者能够在3D听觉环境中定位声源。性能根据效应器的自由度和传感器与效应器之间的空间一致性而变化。结果还可以表征手和头部的运动学,以及它们如何随着音频-电机耦合条件和练习的变化而变化。
更新日期:2020-03-17
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