Perception in Action Research Centre, Macquarie University, Macquarie Park, NSW 2109, Australia;
Department of Cognitive Science, Macquarie University, Macquarie Park, NSW 2109, Australia.
Proc Natl Acad Sci U S A. 2021 Feb 9;118(6). doi: 10.1073/pnas.2020434118.
Grapheme-color synesthetes experience color when seeing achromatic symbols. We examined whether similar neural mechanisms underlie color perception and synesthetic colors using magnetoencephalography. Classification models trained on neural activity from viewing colored stimuli could distinguish synesthetic color evoked by achromatic symbols after a delay of ∼100 ms. Our results provide an objective neural signature for synesthetic experience and temporal evidence consistent with higher-level processing in synesthesia.
同色文字幻听者在看到非彩色符号时会体验到颜色。我们使用脑磁图检查了类似的神经机制是否为颜色感知和同色文字幻听提供了基础。在观看彩色刺激物时对神经活动进行训练的分类模型，可以在延迟约 100 毫秒后区分由非彩色符号引起的同色文字幻听。我们的研究结果为同色文字幻听提供了客观的神经特征，并提供了与同色文字幻听中的高级处理一致的时间证据。
