Remarkable similarities between the temporal organization of neocortical electrographic sleep patterns of rats and humans.
Braz J Med Biol Res
; 21(3): 599-601, 1988.
Article
em En
| MEDLINE
| ID: mdl-3228643
Electrocorticographic activity was automatically recorded in albino rats for 72 consecutive h and analyzed by procedures suitable to detect 24-h rhythms. Beta (alert wakefulness), theta (somnolence), delta (slow wave sleep) and sigma 1 (superficial synchronized sleep) activities showed a robust circadian rhythmic distribution. The acrophases (maxima of the adjusted cosine curve) occurred at 23:39, 07:59, 08:37 and 13:25 h, respectively. EMG atonia and extreme hypotonia (less than 10% of mean EMG level) episodes showed a 24-h rhythm peaking at 14:18 h. The temporal sequence within the circadian rest period, i.e., somnolence, slow wave sleep, superficial synchronized sleep and paradoxical sleep, is very similar to that known to occur during the nocturnal sleep of humans.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sono
/
Córtex Cerebral
/
Ritmo Circadiano
/
Eletroencefalografia
Limite:
Animals
/
Humans
/
Male
Idioma:
En
Revista:
Braz J Med Biol Res
Ano de publicação:
1988
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil