High-frequency, long-range coupling between prefrontal and visual cortex during attention

Georgia G Gregoriou, Stephen J Gotts, Huihui Zhou, Robert Desimone. Science (New York, N.Y.), May 2009.


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…