Logo image
Back
Circadian rhythmicity and behavioral depression: II. Effects of lighting schedules
Journal article   Open access   Peer reviewed

Circadian rhythmicity and behavioral depression: II. Effects of lighting schedules

Karen T. Stewart, Alan M. Rosenwasser, Joel D. Levine, Donald L. McEachron, Joseph R. Volpicelli and Norman T. Adler
Physiology & behavior, v 48(1), pp 157-164
1990
DOI: https://doi.org/10.1016/0031-9384(90)90277-B
PMID: 2236263
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://doi.org/10.1016/0031-9384(90)90277-bView
Published, Version of Record (VoR)CC BY-NC-ND V4.0,  Open
url
https://doi.org/10.1016/0031-9384(90)90277-BView
Published, Version of Record (VoR) Open

Abstract

Activity Circadian rhythms Depression Rats Shock Stress
Two studies explore the relationship between rhythmicity and behavioral depression. Behavioral depression was induced using inescapable footshock, and assessed by measuring subsequent responses to escapable shock, in rats housed under different light-dark conditions. Experiment 1 compared escape performance in free-running and entrained animals following inescapable shock. Free-running and entrained animals did not exhibit differential vulnerability to the effects of inescapable shock. In addition, there were no systematic effects on phase following shock. However, several free-running animals showed increased circadian period following shock, and lengthening of period was significantly correlated with escape performance. Individual differences in baseline period or phase were not predictive of escape performance. In Experiment 2, “aftereffects” of entrainment to long or short light-dark cycles were utilized to create groups of animals with long or short free-running periods. After the administration of inescapable shock, escape performance was tested. There were no significant differences among experimental groups in escape performance. These results suggest that plasticity of circadian period, but not baseline period per se, may be associated with the ability to adapt to environmental challenges.

Metrics

4 Record Views
14 citations in Web of Science
14 citations in Scopus

Details

UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#3 Good Health and Well-Being

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Web of Science research areas
Behavioral Sciences
Psychology, Biological
Logo image