Dorsal periaqueductal gray-induced aversion as a simulation of panic anxiety: elements of face and predictive validity - PubMed (original) (raw)
Dorsal periaqueductal gray-induced aversion as a simulation of panic anxiety: elements of face and predictive validity
F Jenck et al. Psychiatry Res. 1995.
Abstract
Neurosurgical stimulation of the dorsal periaqueductal gray (dPAG) matter in man induces acute signs of autonomic arousal and feelings of subjective anxiety; those signs have phenomenological similarity with the symptom profile characterizing a panic attack. Animals undergoing dPAG stimulation show comparable physical signs of autonomic activation and sudden fear-suggestive behavioral reactions that can be shaped into operant self-interruption behavior. Drugs known to acutely reduce (alprazolam, clonazepam) or precipitate (yohimbine, caffeine) panic attacks in patients were found to acutely and dose-dependently reduce or enhance, respectively, aversion induced by dPAG stimulation in rats. When considered as an animal model of panic anxiety, the dPAG model simultaneously meets criteria of face validity (symptomatic homology) and predictive validity (pharmacological homology under short-term treatment); aspects of its construct validity (theoretical rationale supporting the model) are discussed. It is suggested that dPAG stimulation-induced aversion may represent a model of some aspects of panic disorders.
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