Cardiovascular components of the defence reaction evoked by excitation of neuronal cell bodies in the midbrain periaqueductal grey of the cat
โ Scribed by McDougall, Alan; Dampney, Roger; Bandler, Richard
- Book ID
- 122019307
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 424 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0304-3940
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๐ SIMILAR VOLUMES
Much evidence suggests that the midbrain periaqueductal gray region (PAG) plays a pivotal role in mediating an animal's responses to threatening, stressful, or painful stimuli. Active defensive reactions, hypertension, tachycardia and tachypnea are coordinated by a longitudinally oriented column of
In rats anaesthetised with alphaxalone/alphadolone, electrical stimulation in the dorsal periaqueductal grey matter (PAG) evoked a pressor response with tachycardia, vasodilatation in the hindlimb and hyperpnoea: a pattern of response known as the defence reaction. Microinjection of the synaptic exc