Rodent

Influence of gentling on physiology of the rat

Handled animals tended to have greater skeletal length than control animals.

Year Published: 1956Animal Type: Rat, Rodent

Citation: Ruegamer, W. R., Silverman, F. R. 1956. Influence of gentling on physiology of the rat. Proceedings of the Society for Experimental Biology and Medicine 92, 170-174.

Environmental factors influencing gonadotrophin assay in the rat

The variation in ovary weight (test response) was greater if the cages were small, if there was frequent disturbance by changing cages and cage-mates, and if the rats were caged either singly or in groups larger than two, with the...

Year Published: 1956Animal Type: Rat, Rodent

Citation: Chance, M. R. A. 1956. Environmental factors influencing gonadotrophin assay in the rat. Nature 177, 228-229.

The reward value of running activity

Year Published: 1954Animal Type: Rat, Rodent

Citation: Kagan, J., Berkun, M. 1954. The reward value of running activity. Journal of Comparative and Physiological Psychology 47, 108.

Effect of strain and group size on the response of mice to sconal anaesthesia

The variance of the response to a barbiturate anaesthetic was greater if male mice were caged either singly or in groups of eight than if they were caged in pairs.

Year Published: 1962Topics: Anesthesia & Sedation, Social Housing & CompanionshipAnimal Type: Mouse, Rodent

Citation: Mackintosh, J. H. 1962. Effect of strain and group size on the response of mice to sconal anaesthesia. Nature 194, 1304.

Some effects of maintenance luminance and strain differences upon self-exposure to light by rats

The different degrees of illumination in laboratories may be one of the explanations for variation in experimental results.

Year Published: 1962Animal Type: Rat, Rodent

Citation: Lockard, R. B. 1962. Some effects of maintenance luminance and strain differences upon self-exposure to light by rats. Journal of Comparative and Physiological Psychology 55, 1118-1123.

Effects of environmental complexity and social groupings upon the modification of emotional behavior

Environmental enrichment reduced open-filed defecation in rats.

Year Published: 1962Topics: Environmental Enrichment, Social Housing & CompanionshipAnimal Type: Rat, Rodent

Citation: Denenberg, V. H., Morton, J. R. C. 1962. Effects of environmental complexity and social groupings upon the modification of emotional behavior. Journal of Comparative and Physiological Psychology 55, 242-246.

Exogenous and endogenous components in circadian rhythms

The running activity of hamsters is much higher at a light intensity of only 0.05 lux than 20 lux.

Year Published: 1960Animal Type: Hamster, Rodent

Citation: Aschoff, J. 1960. Exogenous and endogenous components in circadian rhythms. Cold Spring Harbor Symposium on Quantitative Biology 25, 11-28.

Some effects of free and restricted environmental rearing conditions upon adult behavior in the rat

Environmental enrichment enhances the exploratory drive.

Year Published: 1960Animal Type: Rat, Rodent

Citation: Woods, P. J., Ruckelshaus, S. I., Bowling, D. M. 1960. Some effects of free and restricted environmental rearing conditions upon adult behavior in the rat. Psychological Reports 6, 191-200.

Strain differences in activity of mice: Influence of illumination

Year Published: 1960Animal Type: Mouse, Rodent

Citation: McClearn, G. E. 1960. Strain differences in activity of mice: Influence of illumination. Journal of Comparative and Physiological Psychology 53, 142-143.

Effects of environmental complexity and training on brain chemistry

Rats living in an enriched cage environment showed changes in brain chemistry when compared with animals living in barren standard cages.

Year Published: 1960Animal Type: Rat, Rodent

Citation: Krech, D., Rosenzweig, M. R., Bennett, E. L. 1960. Effects of environmental complexity and training on brain chemistry. Journal of Comparative and Physiological Psychology 53, 509-519.