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Acute neurophysiological effects of the hypnotic zolpidem in healthy volunteers.

Authors
  • Lucchesi, Lígia M
  • Braga, Nadia I de O
  • Manzano, Gilberto M
  • Pompéia, Sabine
  • Tufik, Sergio
Type
Published Article
Journal
Progress in Neuro-Psychopharmacology and Biological Psychiatry
Publisher
Elsevier
Publication Date
May 01, 2005
Volume
29
Issue
4
Pages
557–564
Identifiers
PMID: 15866358
Source
Medline
License
Unknown

Abstract

Because zolpidem showed different effects in different components, it seems to first enhance or preserve initial orienting (no change in N1), after an increase of P2 and then drastically diminish resource allocation (affecting N2 and P3 latencies and amplitudes). The study with ERPs, therefore, allows a more direct "moment to moment" investigation of finer mechanisms of changes in cerebral processes underlying the acute ingestion of the drug in question. The effects on N2 and P3 amplitudes and latencies were similar to those of other sedative/hypnotic drugs. However, zolpidem led to an unexpected increase in P2 amplitude; this effect may be related to its selective receptor binding profile and warrants further research.

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