Format

Send to

Choose Destination
Neurosci Lett. 2000 Oct 27;293(2):83-6.

The influence of diazepam on the electroencephalogram-evoked potential interrelation in rats.

Author information

1
Department of Anaesthesiology, University of Nijmegen, P.O. Box 9104, 6500HE, The, Nijmegen, Netherlands. jongsma@nici.kun.nl

Abstract

Though being a sedative, diazepam increases beta-activity in the electroencephalogram (EEG). Diazepam also affects auditory evoked potentials (AEPs). We investigated if the effect of diazepam on AEPs could be ascribed to its beta-increasing effect. Eight rats received vehicle and diazepam counterbalanced. AEPs were ranked in ten categories according to the percentages of beta-activity in the pre-stimulus electroencephalogram (EEG). With vehicle, the P(29), N(51) and P(67) AEP components increased and cross-correlation coefficients (CCCs) declined with increasing beta-activity. With diazepam AEP components and CCCs remained unchanged. All AEPs with diazepam closely resembled the AEP of the lowest beta-category obtained with vehicle. We conclude that the effect of diazepam on AEPs can not be ascribed to its beta-enhancing effect. Diazepam disrupts the normal AEP-EEG relation such that diazepam-effects on AEPs seem to reflect the sedative effects of diazepam and not its beta-increasing effects.

PMID:
11027839
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center