Daily rhythmicity of the rat acoustic startle response.
Physiol Behav
; 51(4): 885-9, 1992 Apr.
Article
em En
| MEDLINE
| ID: mdl-1594689
ABSTRACT
We have measured the acoustic startle response (ASR) amplitude and latency in rats housed in a 1212 lightdark (LD) cycle. The response amplitudes to eliciting stimuli (ES) of 110 dB or 120 dB (white noise) were significantly higher (nearly two-fold) during D than during L. Similar, but nonsignificant, trends were also observed at ES intensities of 90 dB or 100 dB. While some significant LD ASR latency differences were observed, we cannot ascribe them to the photoperiodic phase at this time. These findings conclusively demonstrate that the mammalian ASR amplitude exhibits daily rhythmicity.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Percepção Auditiva
/
Reflexo de Sobressalto
/
Ritmo Circadiano
Limite:
Animals
Idioma:
En
Revista:
Physiol Behav
Ano de publicação:
1992
Tipo de documento:
Article