Functionally dissociating temporal and motor components of response preparation in left intraparietal sulcus.

ABSTRACT: To optimise speed and accuracy of motor behaviour, we can prepare not only the type of movement to be made but also the time at which it will be executed. Previous cued reaction-time paradigms have shown that anticipating the moment in time at which this response will be made ("temporal orienting") or selectively preparing the motor effector with which an imminent response will be made (motor intention or "motor orienting") recruits similar regions of left intraparietal sulcus (IPS), raising the possibility that these two preparatory processes are inextricably co-activated. We used a factorial design to independently cue motor and temporal components of response preparation within the same experimental paradigm. By differentially cueing either ocular or manual response systems, rather than

SUBMITTER: Cotti J 

PROVIDER: S-EPMC3025354 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature