An electrophysiological study of the insertion of overt response choice.
- Authors
- Smid, H G; Fiedler, R; Heinze, H J
- Year
- 2000
- Journal
- Journal of experimental psychology. Human perception and performance
- PMID
- 10884009
- DOI
- 10.1037//0096-1523.26.3.1053
Using electrophysiological measures, the authors studied changes in prestimulus state, stimulus identification, and response-related processing when, in a go/no-go task, forced choice between 2 overt go responses was inserted. The authors observed decreased prestimulus motor preparation (electromyogram), no change in stimulus identification time (selection negativity), a minor increase in response selection time (lateralized readiness potential), a large increase in response preparation time (lateralized readiness potential), a minor effect on response execution time (electromyogram), and a decrease in the activation of a response-inhibition process on no-go trials (frontal event-related potential). The existence of the response-inhibition process was verified by the presence of inverted lateralized readiness potentials on no-go trials. Pure insertion of response choice in a task seems impossible because the choice between activation and inhibition (go/no-go) always seems already present.
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| Neurocognitive deficits in male alcoholics: an ERP/sLORETA analysis of the N2 component in an equal probability Go/NoGo task. | 2012 | 22024409 |
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| Inflexible minds: impaired attention switching in recent-onset schizophrenia. | Smid HG et al. | — | 2013 | → |
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| Effects of response selection on the task repetition benefit in task switching. | Koch I et al. | — | 2005 | → |