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Journal articles
Layer-specificity in the effects of attention and working memory on activity in primary visual cortex
Abstract : Neuronal activity in early visual cortex depends on attention shifts but the contribution to
working memory has remained unclear. Here, we examine neuronal activity in the different
layers of the primary visual cortex (V1) in an attention-demanding and a working memory
task. A current-source density analysis reveales top-down inputs in the superficial layers and
layer 5, and an increase in neuronal firing rates most pronounced in the superficial and deep
layers and weaker in input layer 4. This increased activity is strongest in the attention task but
it is also highly reliable during working memory delays. A visual mask erases the V1 memory
activity, but it reappeares at a later point in time. These results provide new insights in the
laminar circuits involved in the top-down modulation of activity in early visual cortex in the
presence and absence of visual stimuli
Cited literature [77 references]
https://hal-cea.archives-ouvertes.fr/cea-02137953
Contributor : Bruno Savelli <>
Submitted on : Thursday, May 23, 2019 - 2:01:06 PM
Last modification on : Wednesday, June 17, 2020 - 3:25:08 AM
Contributor : Bruno Savelli <>
Submitted on : Thursday, May 23, 2019 - 2:01:06 PM
Last modification on : Wednesday, June 17, 2020 - 3:25:08 AM
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