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TA Engel, NA Steinmetz, MA Gieselmann, A Thiele, T Moore and K Boahen
Abstract
Neocortical activity is permeated with endogenously generated fluctuations, but how these dynamics affect goal-directed behavior remains a mystery. We found that ensemble neural activity in primate visual cortex spontaneously fluctuated between phases of vigorous (On) and faint (Off) spiking synchronously across cortical layers. These On-Off dynamics, reflecting global changes in cortical state, were also modulated at a local scale during selective attention. Moreover, the momentary phase of local ensemble activity predicted behavioral performance. Our results show that cortical state is controlled locally within a cortical map according to cognitive demands and reveal the impact of these local changes in cortical state on goal-directed behavior.
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Concepts
Phase, Neocortex, Modulation, Neuroscience, Cortical column, Brain, Cerebral cortex, Psychology
MeSH headings
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