题 目：大脑无意识信息处理的规律探索：基于信息处理的观点

主讲人：梅宁

时 间：11月3日（周五）下午14:30-16:30

地 点：心理学院 714会议室

主讲人简介：梅宁，深圳大学心理学院副教授，美国亚利桑那州立大学心理学系学士，纽约大学心理学院硕士，西班牙巴斯克认知、脑和语言研究所博士。研究领域包括：无意识信息处理和元认知时间轴上的表达机制。相关研究成果以第一或通讯作者身份发表在Nature Human Behaviour, Computers in Biology and Medicine, Psychonomic & Bulletin Review等权威学术期刊。

讲座内容：

A framework to pinpoint the scope of unconscious processing is critical to improve models of visual consciousness. Previous research observed brain signatures of unconscious processing in visual cortex, but these were not reliably identified. Further, whether unconscious contents are represented in high-level stages of the ventral visual stream and linked parieto-frontal areas remains unknown. Using a within-subject, high-precision functional magnetic resonance imaging approach, we show that unconscious contents can be decoded from multi-voxel patterns that are highly distributed alongside the ventral visual pathway and also involving parieto-frontal substrates. Classifiers trained with multi-voxel patterns of conscious items generalized to predict the unconscious counterparts, indicating that their neural representations overlap. These findings suggest revisions to models of consciousness such as the neuronal global workspace. We then provide a computational simulation of visual processing/representation without perceptual sensitivity by using deep neural networks performing a similar visual task. The work provides a framework for pinpointing the representation of unconscious knowledge across different task domains.