scholarly journals Cocaine and food deprivation : effects on food-reinforced fixed-ratio performance in pigeons /

1991 ◽  
Author(s):  
Christine E. Hughes
Keyword(s):  
1996 ◽  
Vol 65 (1) ◽  
pp. 145-158 ◽  
Author(s):  
Christine E. Hughes ◽  
Raymond C. Pitts ◽  
Marc N. Branch
Keyword(s):  

1967 ◽  
Vol 20 (2) ◽  
pp. 355-358 ◽  
Author(s):  
Richard F. Meginniss

Four groups of 6 pigeons, maintained at 100, 90, 80, and 70% of their ad libitum feeding weight, showed directly proportional weight-dependent depressant effects on fixed ratio key pecking following d-amphetamine treatment.


1973 ◽  
Vol 28 (2) ◽  
pp. 171-183 ◽  
Author(s):  
Richard A. Meisch ◽  
Travis Thompson

1977 ◽  
Vol 27 (2) ◽  
pp. 441-448 ◽  
Author(s):  
Lizabeth A. Barclay ◽  
Donald E. Jackson

1965 ◽  
Vol 16 (3_suppl) ◽  
pp. 1225-1233 ◽  
Author(s):  
S. Thomas Elder ◽  
Noel P. Montgomery ◽  
Merrill M. Rye

Six rats were implanted with electrodes in the posterior medial forebrain area and trained to bar press for crf ICSS and then shifted to FR schedule of reinforcement. It was observed that Ss had to be “primed” on crf at the beginning of each session; FRs greater than 20 to 30 were not typical, but depriving S of food for 48 hr. increased the size of the terminal ratio; with injection of .3 mgm. methamphetamine, S would hold FR-110; and the contributing influence of long exposure co FR, food starvation, and methamphetamine are consistently reversible. It was concluded that the properties of FR ICSS controlled responding are in many respects unlike the behavioral characteristics of the same response class modified and sustained by FR application of more conventional rewards.


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