Characterization of the sleep–wake cycle of the Neotropical rodent Proechimys guyannensis:

SAGE Open Medicine

José Cláudioda Silva¹ 

关键词: Sleep;    Proechimys;    Wistar;    electrographic recordings;   

DOI  :  10.1177/2050312114544239

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Objectives:To better understand the sleep–wake cycle characteristics in the female Neotropical rodent Proechimys guyannensis related to comparative neurobiology.Methods:Surface neocortical and hippocampal electrodes were chronically implanted in the brains of female Wistar and Proechimys animals. In addition, electrodes for the study of muscle activity were implanted into the neck muscle of both species. After surgical recovery and a period of adaptation, animals were continuously registered for periods as long as 48 h.Results:In both the light and dark phases of the cycle, significant differences in some electrographic patterns were observed between the Proechimys and Wistar animals. Although Proechimys has nocturnal activities and a pattern of polyphasic sleep similar to Wistar rats, the analysis of its sleep-wakefulness cycle indicates that the Neotropical rodent sleeps less with consequent longer periods of wakefulness when compared to Wistar rats.Conclusions:Together with previous findings of differe...

【 授权许可】

CC BY