Cell-Type-Specific Synchronization of Neural Activity in FEF with V4 during Attention
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Gregoriou-2012-Cell-Type-Specific S.pdf
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Author(s)
Gregoriou, Georgia G.
Gotts, Stephen J.
Desimone, Robert
Date Issued
February 2012
Journal
Neuron
Publisher
Elsevier
Citation
Gregoriou, Georgia G., Stephen J. Gotts, and Robert Desimone. “Cell-Type-Specific Synchronization of Neural Activity in FEF with V4 During Attention.” Neuron 73, no. 3 (February 2012): 581–594. © 2012 Elsevier Inc.
Version
Final published version
Abstract
Shifts of gaze and shifts of attention are closely linked and it is debated whether they result from the same neural mechanisms. Both processes involve the frontal eye fields (FEF), an area which is also a source of top-down feedback to area V4 during covert attention. To test the relative contributions of oculomotor and attention-related FEF signals to such feedback, we recorded simultaneously from both areas in a covert attention task and in a saccade task. In the attention task, only visual and visuomovement FEF neurons showed enhanced responses, whereas movement cells were unchanged. Importantly, visual, but not movement or visuomovement cells, showed enhanced gamma frequency synchronization with activity in V4 during attention. Within FEF, beta synchronization was increased for movement cells during attention but was suppressed in the saccade task. These findings support the idea that the attentional modulation of visual processing is not mediated by movement neurons.
MIT Department
McGovern Institute for Brain Research at MIT
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1016/j.neuron.2011.12.019
