Projects per year
Abstract
People are able to adapt their behavior to changing environmental contingencies by rapidly inhibiting or modifying their actions. Response inhibition is often studied in the stop-signal paradigm that requires the suppression of an already prepared motor response. Less is known about situations calling for a change of motor plans such that the prepared response has to be withheld but another has to be executed instead. In the present study, we investigated whether electrophysiological data can provide evidence for distinct inhibitory mechanisms when stopping or changing a response. Participants were instructed to perform in a choice RT task with two classes of embedded critical trials: Stop signals called for the inhibition of any response, whereas change signals required participants to inhibit the prepared response and execute another one instead. Under both conditions, we observed differences in go-stimulus processing, suggesting a faster response preparation in failed compared with successful inhibitions. In contrast to stop-signal trials, changing a response did not elicit the inhibition-related frontal N2 and did not modulate the parietal mu power decrease. The results suggest that compared with changing a response, additional frontal and parietal regions are engaged when having to inhibit a response.
Original language | English |
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Journal | Journal of Cognitive Neuroscience |
Volume | 23 |
Issue number | 9 |
Pages (from-to) | 2481-2493 |
Number of pages | 13 |
ISSN | 0898-929X |
DOIs | |
Publication status | Published - 01.09.2011 |
Research Areas and Centers
- Academic Focus: Center for Brain, Behavior and Metabolism (CBBM)
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Dive into the research topics of 'Electrophysiological evidence for different inhibitory mechanisms when stopping or changing a planned response'. Together they form a unique fingerprint.Projects
- 2 Finished
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Inhibitorische Kontrollfunktionen im präfrontalen Kortex
01.01.08 → 31.12.11
Project: DFG Projects › DFG Scholarships: Research Fellowships
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Inhibitory control functions in the prefrontal cortex
Krämer, U. & Knight, R. T.
01.01.08 → 31.12.11
Project: DFG Projects › DFG Individual Projects