Recovery of taste aversion learning induced by fetal neocortex grafts: correlation with in vivo extracellular acetylcholine

1997 ◽  
Vol 759 (1) ◽  
pp. 141-148 ◽  
Author(s):  
Marı́a Isabel Miranda ◽  
Ana Marı́a López-Colomé ◽  
Federico Bermúdez-Rattoni
Keyword(s):  
Taste Aversion ◽  
Aversion Learning ◽  
Taste Aversion Learning

A Classroom Demonstration of Taste-Aversion Learning

1998 ◽  
Vol 25 (2) ◽  
pp. 116-118
Author(s):  
Michael R. Best ◽  
W. Robert Batsell
Keyword(s):  
Taste Aversion ◽  
Animal Research ◽  
Aversion Learning ◽  
Taste Aversion Learning ◽  
Visual Component

Rats readily avoid tastes paired with illness, although they associate exteroceptive cues less well with toxicosis. In this article, we describe a demonstration that recreates the central features of taste-aversion research. A dark, tasty fluid is paired with a toxin. Students can directly observe the animal's behavior to conclude that the taste component, not the visual component, is associated with internal malaise. This demonstration places in a more concrete context the contribution of animal research to the principles of psychology.

scholarly journals LTD at amygdalocortical synapses as a novel mechanism for hedonic learning

eLife ◽  
2020 ◽  
Vol 9 ◽  
Author(s):  
Melissa S Haley ◽  
Stephen Bruno ◽  
Alfredo Fontanini ◽  
Arianna Maffei
Keyword(s):  
Taste Aversion ◽  
Insular Cortex ◽  
Taste Stimulus ◽  
Taste Aversion Learning ◽  
Direct Role ◽  
Hedonic Value ◽  
Basolateral Nucleus ◽  
Synaptic Responses

A novel, pleasant taste stimulus becomes aversive if associated with gastric malaise, a form of learning known as conditioned taste aversion (CTA). CTA is common to vertebrates and invertebrates and is an important survival response: eating the wrong food may be deadly. CTA depends on the gustatory portion of the insular cortex (GC) and the basolateral nucleus of the amygdala (BLA) however, its synaptic underpinnings are unknown. Here we report that CTA was associated with decreased expression of immediate early genes in rat GC of both sexes, and with reduced amplitude of BLA-GC synaptic responses, pointing to long-term depression (LTD) as a mechanism for learning. Indeed, association of a novel tastant with induction of LTD at the BLA-GC input in vivo was sufficient to change the hedonic value of a taste stimulus. Our results demonstrate a direct role for amygdalocortical LTD in taste aversion learning.

Remote and Proximal US Preexposure and Aging Effects in Taste Aversion Learning in Rats

1997 ◽  
Vol 61 (2) ◽  
pp. 221-224 ◽  
Author(s):  
James R Misanin ◽  
Thomas D Hoefel ◽  
Christine A Riedy ◽  
Charles F Hinderliter
Keyword(s):  
Taste Aversion ◽  
Aversion Learning ◽  
Aging Effects ◽  
Taste Aversion Learning
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