STEP IN TIME: CHANGES IN EEG COHERENCE DURING A TIME ESTIMATION TASK FOLLOWING QUADRATO MOTOR TRAINING
The aim of the current research was to examine change in EEG measures of local (power) and long-distance synchronization (coherence) during a time production (TP) task as a function of Quadrato Motor Training (QMT), a complex whole body movement technique performed in response to verbal commands. In order to determine whether the electrophysiological change was driven primarily by cognitive or motor aspects, we used two control groups: Verbal training (VT, identical cognitive task with verbal response); Simple Motor Training (SMT, identical motor task with reduced choice requirements). Eighteen female participants were tested for changes in alpha and theta power and coherence during a time production task, using a within-subject design. We found that changes in time production (slope and intercept) were correlated with frontal theta power and coherence changes. In addition, bilateral temporal theta coherence during the TP significantly increased following QMT, as compared to the SMT and VT groups.