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Effects of attentional and stressor manipulations on the P50 gating response
Author(s) -
WHITE PATRICIA M.,
YEE CINDY M.
Publication year - 1997
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1997.tb02145.x
Subject(s) - psychology , stressor , mental arithmetic , sensory gating , gating , task (project management) , cognition , schizophrenia (object oriented programming) , cognitive psychology , developmental psychology , audiology , neuroscience , heart rate , psychiatry , medicine , management , blood pressure , economics , radiology
The decline in amplitude of the P50 component of the event‐related potential to the second of paired clicks has been suggested as a measure of preattentional gating. Two experiments were conducted to assess the effects of attention and .a psychological stressor on P50. Experiment 1 included two choice reaction time tasks designed to direct attention selectively to the first or second click in each pair. Results suggest that the NIOO component was responsive to attentional manipulations, whereas P50 was not affected. Experiment 2 examined the impact of a brief psychological stressor on the P50 response Parallel mental arithmetic tasks were administered silently and orally. Self‐report and measures of autonomic activity were used to assess the level of stress occurring during the performance of the mental arithmetic tasks Results indicate that P50 suppression was sensitive to the acute stressor, the oral mental arithmetic task Implications of these findings for studies ofP50 suppression in schizophrenia are discussed.