The effect of septal lesions in rats on performance of a free-operant avoidance task

1972 ◽  
Vol 9 (1) ◽  
pp. 59-62 ◽  
Author(s):  
Lawrence D. Middaugh ◽  
Harry M.B. Hurwitz ◽  
T.M. Knapp ◽  
Walter Huchinson
Keyword(s):  
Avoidance Task ◽  
Free Operant Avoidance ◽  
Operant Avoidance ◽  
Free Operant ◽  
Septal Lesions

Diurnal Variation in Performance of Free-Operant Avoidance Behavior of Rats

1976 ◽  
Vol 38 (1) ◽  
pp. 83-90 ◽  
Author(s):  
William B. Ghiselli ◽  
Robert A. Patton
Keyword(s):  
Diurnal Variation ◽  
Operant Response ◽  
Avoidance Task ◽  
Free Operant Avoidance ◽  
Dark Phase ◽  
Activity Levels ◽  
Operant Avoidance ◽  
Free Operant ◽  
Behavior Of Rats ◽  
Daily Periodicity

Possible daily periodicity in experiments involving conditioned behaviors has not usually been investigated or controlled. The present experiment argues for such studies in that variation in the performance of a free-operant avoidance task by 30 rats was detected as a function of when during the 24-hr. day behavioral testing occurred. In terms of shocks avoided, performance was best in the middle of the dark phase of the day and worst late in the light phase. The absence of a similar rhythm in the operant response rate suggests the 24-hr. periodic change in efficacy of avoidance was not related to diurnal variation in general activity levels. Implications of daily periodicity are discussed in terms of experimental procedures and controls.

Chronic free operant avoidance as a psychological stress: A re-evaluation.

1968 ◽  
Author(s):  
Murray D. Levine ◽  
Thomas P. Gordon ◽  
William J. Johnson ◽  
Robert M. Rose
Keyword(s):  
Psychological Stress ◽  
Free Operant Avoidance ◽  
Operant Avoidance ◽  
Free Operant

Stimulus Control of Free-Operant Avoidance: An Investigation of Response

1973 ◽  
Author(s):  
Stanley J. Weiss ◽  
Charles E. Cunningham ◽  
M. Catherine Bushnell
Keyword(s):  
Stimulus Control ◽  
Free Operant Avoidance ◽  
Operant Avoidance ◽  
Free Operant
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