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Direct linkDavis, Michael; Myers, Karyn M.; Ressler, Kerry J. – Learning & Memory, 2006
Fear extinction is defined as a decline in conditioned fear responses (CRs) following nonreinforced exposure to a feared conditioned stimulus (CS). Behavioral evidence indicates that extinction is a form of inhibitory learning: Extinguished fear responses reappear with the passage of time (spontaneous recovery), a shift of context (renewal), and…
Descriptors: Fear, Epidemiology, Behavioral Science Research, Conditioning
Lipp, Hans-Peter; Kaczmarek, Leszek; Werka, Tomasz; Knapska, Ewelina; Walasek, Grazyna; Nikolaev, Evgeni; Neuhausser-Wespy, Frieder – Learning & Memory, 2006
Understanding the function of the distinct amygdaloid nuclei in learning comprises a major challenge. In the two studies described herein, we used c-Fos immunolabeling to compare the engagement of various nuclei of the amygdala in appetitive and aversive instrumental training procedures. In the first experiment, rats that had already acquired a…
Descriptors: Conditioning, Acoustics, Laboratory Equipment, Neurological Organization
