ONTOGENY OF ULTRADIAN AND NOCTURNAL ACTIVITY RHYTHMS IN THE ISOLATED ALBINO-RAT

被引：21

作者：

TEICHER, MH ^{[1
]}

FLAUM, LE ^{[1
]}

机构：

[1] JOHNS HOPKINS UNIV,DEPT PSYCHOL,BALTIMORE,MD 21218

来源：

DEVELOPMENTAL PSYCHOBIOLOGY | 1979年 / 12卷 / 05期

关键词：

D O I：

10.1002/dev.420120504

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The activity of isolated rats from 6 to 25 days of age was analyzed at 10‐min intervals. Ultradian peak activity rhythms, with a rough 1‐2‐hr periodicity, developed between 9 and 12 days of age, and reached an extreme at 15 days. Ultradian periods of attenuated activity were however detectable even in 6‐day‐olds. Isolated rats at 15 days of age displayed greatly accentuated profiles characterized not only by heightened activity levels, but by an extreme cyclicity. These subjects spent most of their time oscillating between periods of marked activity and marked inactivity. Both the average and total duration of these extreme periods were greater in 15‐day‐olds than any of the other ages. Free‐running nocturnal activity rhythms were also observed to develop in isolated rats tested in continuous darkness by the 15th day. Copyright © 1979 John Wiley & Sons, Inc.

引用

页码：441 / 454

页数：14

共 38 条

[1] EFFECTS OF PRENATAL MATERNAL HANDLING ON MATURATION OF RHYTHMIC PROCESSES [J].