Poor Stop-Signal Task Performance: Mechanisms Revealed through Event-Related Brain Potentials

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dc.contributor.advisor Benning, Stephen D.
dc.contributor.author Schumacher, William M.
dc.date.accessioned 2010-04-26T20:55:25Z
dc.date.available 2010-04-26T20:55:25Z
dc.date.issued 2010-04-07
dc.identifier.uri http://hdl.handle.net/1803/4027
dc.description.abstract The stop-signal task has been used extensively in order to test abilities of inhibition as well as cognitive functioning. In previous experiments, a relatively large number of participants had to be excluded from analysis because of poor performance on the task. In this experiment, we examined the differences between adequate and poor performers on a stop-signal task embedded in an emotional lexical decision task. The personality and behavioral data of the poor stop-signal task performers did not differ from the adequate performers, but the P3 and error-related negativity (ERN) ERPs provided evidence that the poor stop-signal performers attended to the lexical decision portion of the task rather than the stop-signal. However, poor stop-signal task performers did not fail to process the stop signal. These results suggest that the selection of the task in which the stop signal is embedded is crucial. en_US
dc.description.sponsorship Thesis completed in partial fulfillment of the requirements of the Honors Program in Psychological Sciences. en_US
dc.language.iso en_US en_US
dc.publisher Vanderbilt University en_US
dc.subject stop-signal task en_US
dc.subject event-related potentials en_US
dc.subject error-related negativity en_US
dc.subject.lcsh Cognitive psychology en_US
dc.subject.lcsh Inhibition -- Testing en_US
dc.subject.lcsh Cognition -- Testing en_US
dc.title Poor Stop-Signal Task Performance: Mechanisms Revealed through Event-Related Brain Potentials en_US
dc.type Thesis en_US
dc.description.college College of Arts & Science en_US
dc.description.department Dept. of Psychological Sciences en_US

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