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Significance Oscillatory activity is prominent in the brain, and one hypothesis is that it is, in part, due to the nature of coupling or interaction patterns between brain areas. We tested this hypothesis by manipulating the strength of coupling between two brain regions (ventral premotor cortex, PMv, and motor cortex, M1) in two directions (increase or decrease) while carefully controlling for the impact each manipulation had on activity in each area. We looked at the PMv–M1 connection because it is the major cortical route by which prefrontal cortex might influence, inhibit, and curtail action-related activity in M1. Manipulating PMv–M1 coupling in accordance with Hebbian-like spike-timing–dependent plasticity resulted in changes in beta and theta frequencies linked to action control.

Increasing and decreasing interregional brain coupling increases and decreases oscillatory activity in the human brain