ISSN:
1420-908X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract When low frequency electrical stimulations were repeatedly applied to the rat midbrain reticular formation, the EEG spectral power recorded at the cortex and thalamus increased markedly, especially in the low frequency bands (0–6 Hz). The intraventricular administration of histamine (Hi) inhibited this increase. Hi-induced inhibition was antagonized by simultaneous injection of an equimolar dose of either pyrilamine or diphenhydramine, but not by that of cimetidine. In accordance with this, 2-methylHi decreased the power in the slow wave region, while 4-methylHi was not effective. It was assumed that the EEG arousal effect of Hi is exerted via H1 receptors but not related to H2 receptors. Adverse effects of H1 blockers on the brain, such as drowsiness, may be produced as a consequence of this inhibitory action.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02222218
