Mammillothalamic Tracts and Representational Memory

The mammillothalamic tracts, which connect the mammillary bodies of the brain stem with the anterior thalamic nuclei of the forebrain, are an integral segment of Papez's circuit and have long been considered to be involved in mediation of emotional aspects of behavior. This study showed that a...

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Bibliographic Details
Published in:Behavioral neuroscience 1985-08, Vol.99 (4), p.621-630
Main Authors: Thomas, Garth J, Gash, Don M
Format: Article
Language:English
Subjects:
Animal
Animals
Biological and medical sciences
Brain Mapping
Brain Stem
Conditioning
Cues
Discrimination (Psychology) - physiology
Discrimination Learning
Fundamental and applied biological sciences. Psychology
Habituation, Psychophysiologic - physiology
Individuality
Learning. Memory
Limbic System
Male
Mammillary Bodies - physiology
Memory
Memory - physiology
Neural Pathways - physiology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Rats
Thalamic Nuclei
Thalamic Nuclei - physiology
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Summary:The mammillothalamic tracts, which connect the mammillary bodies of the brain stem with the anterior thalamic nuclei of the forebrain, are an integral segment of Papez's circuit and have long been considered to be involved in mediation of emotional aspects of behavior. This study showed that a complete transection of these tracts substantially impairs the ability for rats to perform discriminations that depend on representational memory but not those that depend on dispositional memory. Nor were there any marked alterations in the emotional domain of behavior.
ISSN:0735-7044
1939-0084
DOI:10.1037/0735-7044.99.4.621