The Neural Basis of Vivid Memory Is Patterned on Perception

被引:47
作者
Buchsbaum, Bradley R. [1 ]
Lemire-Rodger, Sabrina [1 ]
Fang, Candice [1 ]
Abdi, Herve [2 ]
机构
[1] Baycrest Hosp, Rotman Res Inst, Toronto, ON M6A 2E1, Canada
[2] Univ Texas Dallas, Dallas, TX 75230 USA
基金
加拿大健康研究院; 加拿大自然科学与工程研究理事会;
关键词
WORKING-MEMORY; FUNCTIONAL NEUROANATOMY; CORTICAL ACTIVITY; ACTIVATION; REPRESENTATIONS; SYSTEMS; INFORMATION; RETRIEVAL; REHEARSAL; ATTENTION;
D O I
10.1162/jocn_a_00253
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
When we have a rich and vivid memory for a past experience, it often feels like we are transported back in time to witness once again this event. Indeed, a perfect memory would exactly mimic the experiential quality of direct sensory perception. We used fMRI and multivoxel pattern analysis to map and quantify the similarity between patterns of activation evoked by direct perception of a diverse set of short video clips and the vivid remembering, with closed eyes, of these clips. We found that the patterns of distributed brain activation during vivid memory mimicked the patterns evoked during sensory perception. Using whole-brain patterns of activation evoked by perception of the videos, we were able to accurately classify brain patterns that were elicited when participants tried to vividly recall those same videos. A discriminant analysis of the activation patterns associated with each video revealed a high degree (explaining over 80% of the variance) of shared representational similarity between perception and memory. These results show that complex, multifeatured memory involves a partial reinstatement of the whole pattern of brain activity that is evoked during initial perception of the stimulus.
引用
收藏
页码:1867 / 1883
页数:17
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