Binocular and monocular/unihemispheric sleep in the domestic chick ( Gallus gallus) after a moderate sleep deprivation.
- Resource Type
- Article
- Authors
- Bobbo, Daniela; Nelini, Cristian; Mascetti, Gian G.
- Source
- Experimental Brain Research. Mar2008, Vol. 185 Issue 3, p421-427. 7p. 2 Diagrams, 2 Graphs.
- Subject
- *CHICKENS as laboratory animals
*SLEEP deprivation
*LABORATORY animals
*VETERINARY ethology
*CHICKS
- Language
- ISSN
- 0014-4819
Binocular (Bin-sleep) and monocular/unihemispheric sleep (Mo-Un sleep) were studied in domestic chicks ( Gallus gallus) after an 8 h period of sleep deprivation. Eleven-day-old chicks were divided into three groups: two non-deprived (N-DEP1 and N-DEP2) and one deprived for 8 h (DEP-8H). Deprivation was performed by placing chicks on a treadmill on which they were forced to walk continuously. Sleep behaviour was recorded for 6 h consecutively immediately after the end of sleep deprivation. During the recovery period, sleep-deprived chicks slept for a longer duration, spent significantly more time in binocular sleep and slept for significantly longer episodes that did control chicks. Regarding Mo-Un sleep, sleep deprivation seems to affect the right hemisphere by reducing the number of episodes and the time spent sleeping with the left eye closed. These results suggest that sleep-deprivation significantly influences the pattern of sleep in domestic chicks allowing for a better recovery. [ABSTRACT FROM AUTHOR]