High-Frequency, Long-Range Coupling Between Prefrontal and Visual Cortex During Attention Export

@article{citeulike:4680712, abstract = {Electrical recordings in humans and monkeys show attentional enhancement of evoked responses and gamma synchrony in ventral stream cortical areas. Does this synchrony result from intrinsic activity in visual cortex or from inputs from other structures? Using paired recordings in the frontal eye field (FEF) and area V4, we found that attention to a stimulus in their joint receptive field leads to enhanced oscillatory coupling between the two areas, particularly at gamma frequencies. This coupling appeared to be initiated by FEF and was time-shifted by about 8 to 13 milliseconds across a range of frequencies. Considering the expected conduction and synaptic delays between the areas, this time-shifted coupling at gamma frequencies may optimize the postsynaptic impact of spikes from one area upon the other, improving cross-area communication with attention. 10.1126/science.1171402}, author = {Gregoriou, Georgia G. and Gotts, Stephen J. and Zhou, Huihui and Desimone, Robert}, citeulike-article-id = {4680712}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1171402}, citeulike-linkout-1 = {http://www.sciencemag.org/content/324/5931/1207.abstract}, citeulike-linkout-2 = {http://www.sciencemag.org/content/324/5931/1207.full.pdf}, citeulike-linkout-3 = {http://www.sciencemag.org/cgi/content/abstract/324/5931/1207}, citeulike-linkout-4 = {http://view.ncbi.nlm.nih.gov/pubmed/19478185}, citeulike-linkout-5 = {http://www.hubmed.org/display.cgi?uids=19478185}, day = {29}, doi = {10.1126/science.1171402}, issn = {1095-9203}, journal = {Science}, keywords = {coupling, electrophysiology, monkey}, month = {May}, number = {5931}, pages = {1207--1210}, posted-at = {2009-06-02 07:53:23}, priority = {2}, title = {High-Frequency, Long-Range Coupling Between Prefrontal and Visual Cortex During Attention}, url = {http://dx.doi.org/10.1126/science.1171402}, volume = {324}, year = {2009} }

TY - JOUR ID - citeulike:4680712 L3 - citeulike-article-id:4680712 N2 - Electrical recordings in humans and monkeys show attentional enhancement of evoked responses and gamma synchrony in ventral stream cortical areas. Does this synchrony result from intrinsic activity in visual cortex or from inputs from other structures? Using paired recordings in the frontal eye field (FEF) and area V4, we found that attention to a stimulus in their joint receptive field leads to enhanced oscillatory coupling between the two areas, particularly at gamma frequencies. This coupling appeared to be initiated by FEF and was time-shifted by about 8 to 13 milliseconds across a range of frequencies. Considering the expected conduction and synaptic delays between the areas, this time-shifted coupling at gamma frequencies may optimize the postsynaptic impact of spikes from one area upon the other, improving cross-area communication with attention. 10.1126/science.1171402 IS - 5931 JF - Science SN - 1095-9203 EP - 1210 TI - High-Frequency, Long-Range Coupling Between Prefrontal and Visual Cortex During Attention VL - 324 SP - 1207 KW - coupling KW - electrophysiology KW - monkey AU - Gregoriou, Georgia AU - Gotts, Stephen AU - Zhou, Huihui AU - Desimone, Robert PY - 2009/05/29/ UR - http://dx.doi.org/10.1126/science.1171402 ER -