scholarly journals One-trial excitatory backward conditioning as assessed by conditioned suppression of licking in rats: Concurrent observations of lick suppression and defensive behaviors

1987 ◽  
Vol 15 (2) ◽  
pp. 212-217 ◽  
Author(s):  
John J. B. Ayres ◽  
Christopher Haddad ◽  
Melody Albert



2000 ◽  
Vol 53 (2b) ◽  
pp. 149-171 ◽  
Author(s):  
Daniel C. Burger ◽  
Haney Mallemat ◽  
Ralph R. Miller

Four experiments using a conditioned lick suppression preparation with rats were conducted to examine whether overshadowing of subsequent events could be obtained in Pavlovian backward conditioning (i.e. unconditioned stimulus [US] before conditioned stimulus [CS]), and to determine whether such overshadowing could be reversed without further training with the overshadowed CS, as has been reported in overshadowing of antecedent events. In Experiment 1, a backward-conditioned CS overshadowed a second backward-conditioned CS. Two posttraining manipulations, extinction of the overshadowing CS (Experiment 2) and shifting of the temporal relationship of the overshadowing CS to the US (Experiment 3), increased responding to the overshadowed CS. These results constitute the first unambiguous demonstration of stimulus competition between subsequent events using first-order conditioning, and they show that, like overshadowing with forward conditioning, such overshadowing is due, at least in part if not completely, to a failure to express information that had been acquired.



1986 ◽  
Vol 99 (3) ◽  
pp. 367 ◽  
Author(s):  
Douglas A. Williams ◽  
Dennis G. Dyck ◽  
Robert W. Tait








Neuroscience ◽  
2015 ◽  
Vol 310 ◽  
pp. 752
Author(s):  
A. Spiacci ◽  
T. de Oliveira Sergio ◽  
G.S.F. da Silva ◽  
M.L. Glass ◽  
L.C. Schenberg ◽  
...  


1969 ◽  
Vol 17 (3) ◽  
pp. 161-162 ◽  
Author(s):  
Stephen G. Holtzman ◽  
Julian E. Villarreal


1982 ◽  
Vol 34 (3b) ◽  
pp. 163-180 ◽  
Author(s):  
M. M. Cotton ◽  
Glyn Goodall ◽  
N. J. Mackintosh

Five experiments, all employing conditioned suppression in rats, studied inhibitory conditioning to a stimulus signalling a reduction in shock intensity. Experimental subjects were conditioned to a tone signalling a 1·0 mA shock and to a tone-light compound signalling a 0·4 mA shock. On a summation test in which it alleviated the suppression maintained by a third stimulus also associated with the 1·0 mA shock, the light was established as a conditioned inhibitor. Retardation tests gave ambiguous results: the light was relatively slow to condition when paired, either alone or in conjunction with another stimulus, with the 0·4 mA shock, but the difference from a novel stimulus control group was not significant. Two final experiments found no evidence at all of inhibition on a summation test in which the light was presented in conjunction with a stimulus that had itself been associated with the 0·4 mA shock. The results of these experiments have implications for the question of what animals learn during the course of inhibitory conditioning.



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