SciELO - Scientific Electronic Library Online

vol.9 número1An alternative technique for individual marking of orb-web spidersO comportamento do boto-cinza Sotalia guianensis (van Bénéden, 1864) (Cetacea; Delphinidae) através do olhar dos pescadores artesanais índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados





Revista de Etologia

versão impressa ISSN 1517-2805


SILVA, Camila Lopes da; SANTOS, Maria Carolina Begliomini  e  HOSHINO, Katsumasa. Catalepsia induzida pelo lactato e atividade muscular forçada em ratos privados de sono. Rev. etol. [online]. 2010, vol.9, n.1, pp.7-15. ISSN 1517-2805.

Catalepsy induced by lactate administration and forced muscular activity in rats. Comparative studies of behavioral homologies help understand several aspects of psychiatric disorders. The present study evaluated the effect of REM-sleep deprivation on the catalepsy induced by lactate administration plus forced muscular activity. Rats deprived of REM-sleep for 96 hs were injected i.p. with lactate solution 10mM/kg and submitted to 5 minutes of forced muscular activity. Catalepsy was then evaluated. The number of animals displaying catalepsy (50%) and mean total catalepsy time (11,92 ± 4,12 minutes) were lower in sleep deprived animals than in controls (91.7% and 26.67 ± 5.86 min respectively), results being statistically significant at the limit level (p=0,05). It is concluded that in long lasting dangerous situations, catalepsy may be triggered after normal wakefulness coping possibilities are exhausted, and sleep being manifested only when the risk situation is over.

Palavras-chave : Catalepsy; Defensive behavior; Sleep; Rats.

        · resumo em Português     · texto em Português     · Português ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons