Combined organizational and activational effects of short and long photoperiods on spatial and temporal memory in rats.
Behav Processes
; 74(2): 226-33, 2007 Feb 22.
Article
em En
| MEDLINE
| ID: mdl-16971053
ABSTRACT
The present study examined the effects of photoperiod on spatial and temporal memory in adult Sprague-Dawley rats that were conceived and reared in different day lengths, i.e., short day (SD-816 light/dark) and long day (LD-168 light/dark). Both male and female LD rats demonstrated increased spatial memory capacity as evidenced by a lower number of choices to criterion in a 12-arm radial maze task relative to the performance of SD rats. SD rats also demonstrated a distortion in the content of temporal memory as evidenced by a proportional rightward shift in the 20 and 60 s temporal criteria trained using the peak-interval procedure that is consistent with reduced cholinergic function. The conclusion is that both spatial and temporal memory are sensitive to photoperiod variation in laboratory rats in a manner similar to that previously observed for reproductive behaviour.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Percepção do Tempo
/
Ritmo Circadiano
/
Fotoperíodo
/
Aprendizagem em Labirinto
/
Aprendizagem por Discriminação
Limite:
Animals
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article