Understanding the neurophysiology of emotions, the neuronal structures involved in processing emotional information and the circuits by which they act, is key to designing applications in the field of affective neuroscience, to advance both new treatments and applications of brain–computer interactions. However, efforts have focused on developing computational models capable of emotion classification instead of on studying the neural substrates involved in the emotional process. In this context, we have carried out a study of cortical asymmetries and functional cortical connectivity based on the electroencephalographic signal of 24 subjects stimulated with videos of positive and negative emotional content to bring some light to the neurobiology behind emotional processes. Our results show opposite interhemispheric asymmetry patterns throughout the cortex for both emotional categories and specific connectivity patterns regarding each of the studied emotional categories. However, in general, the same key areas, such as the right hemisphere and more anterior cortical regions, presented higher levels of activity during the processing of both valence emotional categories. These results suggest a common neural pathway for processing positive and negative emotions, but with different activation patterns. These preliminary results are encouraging for elucidating the neuronal circuits of the emotional valence dimension.

中文翻译：

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情绪大脑价维度中的皮质不对称和连接模式

了解情绪的神经生理学、参与处理情绪信息的神经元结构及其作用的电路，是设计情感神经科学领域应用的关键，以推进新的治疗方法和脑机交互的应用。然而，努力的重点是开发能够进行情绪分类的计算模型，而不是研究情绪过程中涉及的神经基质。在此背景下，我们基于 24 名受试者的脑电图信号对皮层不对称性和功能性皮层连接进行了研究，这些受试者接受了正面和负面情绪内容视频的刺激，为情绪过程背后的神经生物学带来了一些启示。我们的结果显示了整个皮层的相反的半球间不对称模式，用于情绪类别和关于每个研究的情绪类别的特定连接模式。然而，一般而言，相同的关键区域，例如右半球和更多的前皮质区域，在处理两种效价情绪类别期间表现出更高水平的活动。这些结果表明处理积极和消极情绪的共同神经通路，但具有不同的激活模式。这些初步结果对于阐明情绪价维度的神经元回路是令人鼓舞的。例如右半球和更多的前皮层区域，在处理这两种效价情绪类别的过程中表现出更高水平的活动。这些结果表明处理积极和消极情绪的共同神经通路，但具有不同的激活模式。这些初步结果对于阐明情绪价维度的神经元回路是令人鼓舞的。例如右半球和更多的前皮层区域，在处理这两种效价情绪类别的过程中表现出更高水平的活动。这些结果表明处理积极和消极情绪的共同神经通路，但具有不同的激活模式。这些初步结果对于阐明情绪价维度的神经元回路是令人鼓舞的。