- Title
- Motor and non-motor inhibition in the Go/NoGo task: an ERP and fMRI study
- Creator
- Smith, Janette L.; Jamadar, Sharna; Provost, Alexander L.; Michie, Patricia T.
- Relation
- International Journal of Psychophysiology Vol. 87, Issue 3, p. 244-253
- Publisher Link
- http://dx.doi.org/10.1016/j.ijpsycho.2012.07.185
- Publisher
- Elsevier BV
- Resource Type
- journal article
- Date
- 2013
- Description
- The contribution of movement-related activity to Go/NoGo ERP differences has been debated for 25 years. In this study, we examined ERP and fMRI measures of activity in twenty adults performing non-motor (count)and motor (right-handed button press) trials of the Go/NoGo task. Task performance was highly accurate and similar in the ERP and fMRI environments. No significant task-related effects were observed for the N2 component; however, we observed a substantial increase in positivity for Press NoGo compared to Count NoGo trials. The fMRI results also revealed significant deactivations for Press NoGo relative to Count NoGo trials in several left-lateralised motor-related areas, including the inferior frontal gyrus, precentral gyrus and supplementary motor area. Together, the results indicate that the P3 NoGo>Go effect in motor tasks is caused not by movement-related negativity on Go trials but by inhibition-related positivity on NoGo trials, and that this is associated with deactivation of motor areas involved in the Go response.
- Subject
- motor inhibition; cognitive inhibition; response conflict; movement-related potentials; Go/NoGo task
- Identifier
- http://hdl.handle.net/1959.13/1295966
- Identifier
- uon:19155
- Identifier
- ISSN:0167-8760
- Language
- eng
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