Effect of Age and Experience on Bar Pressing and Activity in the Rat

Desroches, Harry F.; Kimbrell, G. McA.; Allison, Julian T.

doi:10.1093/geronj/19.2.168

Cited by 6 publications

(2 citation statements)

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“…The decrease in activity with increasing age is especially striking since the greater size of older rats permitted them to progress more rapidly through the open field than younger ones. A general reduction in activity as a function of age has also been observed by Candland (1959), Desroches, Kimbrell, and Allison (1964), and Denenberg and Smith (1963). Females were consistently more active than males in the open field.…”

Section: Discussionsupporting

confidence: 73%

Effects of handling at various ages on later open-field behavior.

Doty¹,

Doty²

1967

Canadian Journal of Psychology / Revue canadienne de psychologi

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To test an hypothesis that critical periods for effects of handling on subsequent open-field behaviour occur only early in development, 200 rats equally distributed among 3-, 15-, 250-, 400-, and 600-day age groups at the time of treatment were either handled for 20 days or were left undisturbed. Activity and defecations in the open field were observed on the day following termination of handling and 120 days later. Handling significantly increased activity among Ss of all ages and decreased defecations among Ss of extreme ages on the first open-field test. These effects did not persist on the second test except in activity among the oldest Ss. Activity also decreased and defecations increased significantly as a function of age. Results are interpreted as suggesting that handling at a variety of ages temporarily affects behaviour in the open field while age itself strongly influences this behaviour regardless of extra-stimulation treatment.

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Section: Discussionsupporting

confidence: 73%

Effects of handling at various ages on later open-field behavior.

Doty¹,

Doty²

1967

Canadian Journal of Psychology / Revue canadienne de psychologi

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“…When young and 100 mature rats were compared on an LCBP measure, a complex interaction was obtained (Morrison, 1965), and comparisons of mature-young and senescent rats for operant level and LCBP measures resulted in a small, but reliable, rate difference with mature-young rats making more total responses than senescent rats (Goodrick, 1965). Other studies have shown higher response rates for young than old rats during variable interval bar pressing (Solyom & Miller, 1965), higher rates in a multiple-bar box for old than young rats (Corke, 1964), or have failed to find reliable age response-rate differences (Desroches, Kimbrell, & Allison, 1964;Entwistle, 1959;Goodrick, 1969).…”

mentioning

confidence: 95%

Light- and dark-contingent bar pressing in the rat as a function of age and motivation.

Goodrick¹

1970

Journal of Comparative and Physiological Psychology

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The effects of age and food deprivation on operant responding for light onset or light offset were determined for rats after operant-level pretests. Results were: (a) light onset had a reward value which was similar to that for light offset, (b) stimulus change was an equally effective reward for food-deprived or nondeprived rats, (c) the effects were invariant over the entire age range for mature rats, and (d) response rates were greater for food-deprived than nondeprived rats during all operant-level and stimuluschange tests. A major conclusion of this study is that a change in light stimulation rather than a preference for some particular light intensity is positively reinforcing.

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Techniques Utilized in the Evaluation of Psychotropic Drugs on Animal Activity

Kinnard

Watzman

1966

Journal of Pharmaceutical Sciences

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Effect of Age and Experience on Bar Pressing and Activity in the Rat

Cited by 6 publications

References 0 publications

Effects of handling at various ages on later open-field behavior.

Effects of handling at various ages on later open-field behavior.

Light- and dark-contingent bar pressing in the rat as a function of age and motivation.

Techniques Utilized in the Evaluation of Psychotropic Drugs on Animal Activity

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