NESC 2130 Lecture Notes - Primary Motor Cortex, Supplementary Motor Area, Visual Cortex
18 Oct 2013
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Document Summary
Movement planning and motor control: article: macar et al. , 2004 : timing functions of supplementary motor area: an event-related fmri study. Common set of brain areas is activated in relation to timing, irrespective of a difference in task features. >attention important for accurate timing-> right parietal and dorsolateral prefrontal cortex= sustained attention. Goal: event-related fmri study where subjects to produce a 2. 5s target interval. Predict stronger activation of basal ganglia and sma in time compared to force task (e. g. can compare to see what is activated for timing or for motor performance->both areas noted for motor use) >subjects held push-button, equipped with force transducer (measures force) in other hand. >respond by pushing button with tip of thumb. Trials in each task began with presentation of different letter at centre of video screen (prompt) 2 targets (interval and force) memorized in trial blocks which included accuracy constraints. 1st letter, t", appears on screen which remained visible for 1-1. 6s.
