Department of Psychology, Institute for Mind and Brain, University of South Carolina, Columbia, SC, USA.
Department of Psychology, Institute for Mind and Brain, University of South Carolina, Columbia, SC, USA.
Cortex. 2021 May;138:127-137. doi: 10.1016/j.cortex.2021.01.022. Epub 2021 Feb 16.
A fundamental question in affective neuroscience is whether there is a common hedonic system for valence processing independent of modality, or there are distinct neural systems for different modalities. To address this question, we used both region of interest and whole-brain representational similarity analyses on functional magnetic resonance imaging data to identify modality-general and modality-specific brain areas involved in valence processing across visual and auditory modalities. First, region of interest analyses showed that the superior temporal cortex was associated with both modality-general and auditory-specific models, while the primary visual cortex was associated with the visual-specific model. Second, the whole-brain searchlight analyses also identified both modality-general and modality-specific representations. The modality-general regions included the superior temporal, medial superior frontal, inferior frontal, precuneus, precentral, postcentral, supramarginal, paracentral lobule and middle cingulate cortices. The modality-specific regions included both perceptual cortices and higher-order brain areas. The valence representations derived from individualized behavioral valence ratings were consistent with these results. Together, these findings suggest both modality-general and modality-specific representations of valence.
情感神经科学的一个基本问题是，是否存在一种独立于模态的、用于处理效价的通用享乐系统，还是存在不同模态的特定神经系统。为了解决这个问题，我们使用了基于感兴趣区域和全脑代表性相似性分析的功能磁共振成像数据，以确定视觉和听觉模态中涉及效价处理的模态通用和模态特定的脑区。首先，基于感兴趣区域的分析表明，颞上回与模态通用和听觉特定模型有关，而初级视觉皮层与视觉特定模型有关。其次，全脑搜索光分析也确定了模态通用和模态特定的表示。模态通用区域包括颞上回、内侧额上回、额下回、楔前叶、中央前回、中央后回、缘上回、旁中央小叶和中扣带回皮质。模态特定区域包括感知皮层和高级脑区。从个体行为效价评分中得出的效价表示与这些结果一致。总之，这些发现表明存在效价的模态通用和模态特定表示。
