Phasic bursting activity of paraventricular neurons is modulated by temperature and angiotensin II

1. Impulse activity of phasically firing (bursting) paraventricular neurons, which are assumed to be of the vasopressinergic type, have been extracellularly recorded in brain slices of the rat. 2. Analysis of burst patterns during temperature changes, angiotensin II application and combined applicat...

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Bibliographic Details
Published inJournal of thermal biology Vol. 24; no. 5; pp. 339 - 345
Main Authors Dewald, M, Anthes, N, Vedder, H, Voigt, K, Braun, H.A
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.10.1999
Subjects
Angiotensin II
AVP
Burst
Hypothalamus
Impulse pattern
In vitro
Neuromodulation
Neuronal interactions
Neuronal temperature sensitivity
Osmoregulation
Paraventricular nucleus
Phasic activity
PVN
Rat
Vasopressin
Phasic activity
Neuronal interactions
Rat
Osmoregulation
PVN
Hypothalamus
Paraventricular nucleus
Neuromodulation
In vitro
Vasopressin
Burst
AVP
Angiotensin II
Neuronal temperature sensitivity
Impulse pattern
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Summary:1. Impulse activity of phasically firing (bursting) paraventricular neurons, which are assumed to be of the vasopressinergic type, have been extracellularly recorded in brain slices of the rat. 2. Analysis of burst patterns during temperature changes, angiotensin II application and combined application of both stimuli demonstrated that certain burst parameters are effected much stronger than the mean firing rate and also for a longer period of time. 3. The most sensitive parameter was the intraburst frequency which is considered to be the most effective parameter for increased vasopressin release. 4. These data indicate that there are functionally relevant changes in the impulse patterns which are not necessarily manifested in the mean firing rate.
ISSN:0306-4565
1879-0992
DOI:10.1016/S0306-4565(99)00045-5