Effects of a Synthetic Predator Odor (TMT) on Freezing, Analgesia, Stereotypy, and Spatial Memory

Exposing rats to the predator odor of trimethylthiazoline (TMT), obtained from the red fox, was compared to exposure to the novel control odor of citronella. In Experiment 1, TMT produced defensive freezing and an analgesic reaction that was reversed by an opiate antagonist. In Experiment 2, TMT aug...

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Veröffentlicht in:The Psychological record 2005, Vol.55 (1), p.3-38
Hauptverfasser: Williams, Jon L, Baez, Catherine, Hladky, Katherine J, Camacho, Cheri A
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Hladky, Katherine J
Camacho, Cheri A
description Exposing rats to the predator odor of trimethylthiazoline (TMT), obtained from the red fox, was compared to exposure to the novel control odor of citronella. In Experiment 1, TMT produced defensive freezing and an analgesic reaction that was reversed by an opiate antagonist. In Experiment 2, TMT augmented response stereotypy induced by an amphetamine injection. In Experiment 3, TMT interfered with working memory during 30-s, but not 0-s, delay trials of a spatial-alternation task. However, a larger amount of TMT disrupted performance during delay and no-delay trials. In Experiment 4, TMT impaired the recall of the location of a hidden platform in a Morris water maze, and a preexposure injection of a benzodiazepine agonist prevented this deficit. These findings and their implications are discussed in terms of research involving similar paradigms with other stressors.
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source Applied Social Sciences Index & Abstracts (ASSIA); Springer Online Journals; Business Source Complete (EB_SDU_P3); EBSCOhost Education Source
subjects Amphetamines
Analgesics
Fear
Feedback (Response)
Freezing
Helplessness
Injections
Laboratories
Memory
Odors
Odours
Positive Reinforcement
Researchers
Risk Assessment
Rodents
Short Term Memory
Stereotypes
Stimulation
Stimuli
Stress
title Effects of a Synthetic Predator Odor (TMT) on Freezing, Analgesia, Stereotypy, and Spatial Memory
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