In search of the point of no return: the control of response processes |
| |
Authors: | R De Jong M G Coles G D Logan G Gratton |
| |
Affiliation: | University of Illinois, Urbana-Champaign. |
| |
Abstract: | Control processes underlying response inhibition were examined. Six Ss performed a visual choice reaction task and were occasionally presented with a tone that told them to withhold the response. Reaction time results were in agreement with a model that assumes a race between response activation and response inhibition processes. Event-related brain potentials, electromyogram, and continuous response measures showed that responses could be interrupted at any time. Evidence was obtained for two inhibitory mechanisms: inhibition of central activation processes and inhibition of transmission of motor commands from central to peripheral structures. Results have implications for the distinction between controlled and ballistic processes. |
| |
Keywords: | |
|
|