ERP and Behavioral Changes During the Wake Sleep Transition
Document Type
Article
Publication Date
5-1-1994
Department
Psychology
Abstract
Event-related potentials (ERPs) following infrequent and frequent stimuli were studied as subjects moved from wakefulness to sleep. Subjects were instructed to respond to the infrequent "target" stimuli (attend condition) or to ignore the stimuli (ignore condition). Parietal P300, prominent following target ERPs in wakefulness under the attend condition, disappeared in association with reduced behavioral responsiveness and emergence of a central negativity (N350). The N350 anal preceding and following positivities (P220 and P450) became the dominant feature of both target and nontarget ERPs under both attend and ignore conditions. The P220-N350-P450 complex was larger and peak latencies were shorter under the attend condition. Peak amplitudes tended to be larger following targets, especially under the attend condition. The findings suggest that, although the processes underlying P300 are less likely to be engaged, processing of stimulus deviance and task relevance continues in sleepiness and sleep, and is reflected by variance in N350 anal related activity.
Publication Title
Psychophysiology
Volume
31
Issue
3
First Page
244
Last Page
252
Recommended Citation
Harsh, J. R.,
Voss, U.,
Hull, J.,
Schrepfer, S.,
Badia, P.
(1994). ERP and Behavioral Changes During the Wake Sleep Transition. Psychophysiology, 31(3), 244-252.
Available at: https://aquila.usm.edu/fac_pubs/7220