Context-related motor control implemented by modulation of cortical synchrony: A mechanism of successful context-related motor behavior

Modulation of learned „motor programs“ is the basis of context-adequate behavior, consisting of retrieval or non-retrieval (inhibition) of behavioral elements. Evidence was provided that focal activation/deactivation represents contextual modulation (Hummel, NIMG 2004). However, it remains open, how involved brain areas interact to implement retrieval and non-retrieval (inhibition). To address these questions phase coherence analysis was used to determine interactions between these brain areas. We evaluated EEG task-related phase coherence (TRPhCoh) and power (TRPow). Subjects trained finger movement sequences u…