scholarly journals Prenatal ethanol increases sucrose reinforcement, an effect strengthened by postnatal association of ethanol and sucrose

Alcohol ◽  
2014 ◽  
Vol 48 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Marcela Elena Culleré ◽  
Norman E. Spear ◽  
Juan Carlos Molina
1979 ◽  
Vol 44 (3_suppl) ◽  
pp. 1311-1316
Author(s):  
Richard J. Nicholls ◽  
Victor Duch

Four groups of rats were given single-alternation training in a runway using sucrose reward and then extinguished. Only subjects given training with a short interval (10 sec.) between rewarded and nonrewarded trials and a long interval (40 min.) between nonrewarded and rewarded trials learned patterned responding. This duplicated the results found in classical conditioning with a similar manipulation. The acquisition and extinction data led to the conclusion that intertrial interval cues can be made more important than aftereffects in producing patterning with sucrose reinforcement.


1991 ◽  
Vol 550 (1) ◽  
pp. 122-124 ◽  
Author(s):  
Linda H. Schneider ◽  
Chris A. Watson ◽  
James Gibbs ◽  
Gerard P. Smith

2007 ◽  
Vol 97 (3) ◽  
pp. 2042-2058 ◽  
Author(s):  
Mark A. Teagarden ◽  
George V. Rebec

Although the subthalamic nucleus (STN) is commonly assumed to be a relay for striatal (STR) output, anatomical evidence suggests the two structures are connected in parallel, raising the possibility that parallel STN and STR firing patterns mediate behavioral processes. The STR is known to play a role in associative and limbic processes, and although behavioral studies suggest that the STN may do so as well, evaluation of this hypothesis is complicated by a lack of pertinent STN physiological data. We recorded concurrent STN and STR firing patterns in rats learning an operant nose-poke task. Both structures responded in similar proportions to task events including instructive cues, discriminative nose-pokes, and sucrose reinforcement. Neuronal responses to reinforcement comprised phasic excitations preceding reinforcement and inhibitions afterward; the inhibition was attenuated when reinforcement was absent. Reinforcement responses occurred more frequently during later training sessions in which discriminative action was required, suggesting that responses were context-dependent. Nose-pokes were typically preceded by excitations; there also was a nonsignificant trend toward inhibition encoding correct nose-pokes. Sustained changes in firing rate coinciding with specific task events suggested that both nuclei were encoding behavioral sequences; this is the first report of such behavior in the STN. Our findings also reveal complex STN responses to reinforcement. Thus both STN and STR neurons show concurrent involvement in motor, limbic, and associative processes.


2006 ◽  
Vol 56 (3) ◽  
pp. 429-446
Author(s):  
Jeffrey N. Weatherly ◽  
Grant A. Bauste ◽  
Casey L. McDougall ◽  
Jeri T. Nurnberger

2007 ◽  
Vol 57 (4) ◽  
pp. 577-592 ◽  
Author(s):  
Jeffrey N. Weatherly ◽  
Amber Huls ◽  
Ashley Kulland

2020 ◽  
Vol 195 ◽  
pp. 172966
Author(s):  
M.L. Eckard ◽  
K.R. Trexler ◽  
B.T. Kotson ◽  
K.G. Anderson ◽  
S.G. Kinsey

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