Strain Differences in Acquisition and Extinction of Fear Responses in Rats

Bibliographic Data

ID13657289
AuthorsGudrun Sartory (University of London, corresponding author), Hans J Eysenck (University of London)
Year1976
Volume38
Issue1
Pages163-187
Publication date1976-02-01
Open AccessYes
TypeARTICLE
VenuePsychological Reports (JOURNAL)
Journal identifiersISSN: 0033-2941 • E-ISSN: 1558-691X
PublisherSAGE Publishing (PUBLISHER • US)
DOI10.2466/pr0.1976.38.1.163
PMID1250917
OpenAlexW2099471826
LanguageEN
Citations received4
References cited21

5 different strains of rats (Roman high and low avoiders, Maudsley reactive and non-reactive and random-bred animals) were subjected repeatedly to extinction trials following Pavlovian fear conditioning. The duration of the extinction trials was varied for different groups of animals. Fear was measured by latency of escape into the “safe” compartment in Exp. I and by step-down latency in Exp. II during a final fear-retention test. Results showed no differences between Roman high and low avoiders; for the Maudsley strains, however, results suggested that the higher the basal fear level the stronger is the acquired fear response and the more time is required for its extinction. Fearfulness in the animal and duration of extinction trials were jointly and severally causal in determining degree of extinction of the conditioned fear response

Amygdala · Audiology · Biology · Classical conditioning · Conditioning · Developmental psychology · Extinction (optical mineralogy · Fear conditioning · Latency (audio · Medicine · Memory and Neural Mechanisms · Neuroendocrine regulation and behavior · Neuroscience · Psychology · Stress Responses and Cortisol

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