Intracranial self-stimulation in cats surgically deprived of autonomic outflows.

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Abstract
Elicited intracranial self-stimulation (ICSS) from points in the region of the median forebrain bundle (MFB) in 25 adult cats. Other regions in the hypothalamus were ineffective. Total interruption of the thoracolumbar outflow by removal of the sympathetic chain bilaterally in 2-stage operations did not alter the rate or pattern of ICSS. Bilateral vagotomy and bilateral pelvic splanchnicectomy added to the sympathectomies did not alter the rate or pattern of ICSS, nor was sensory feedback from the visceral organs innervated via paths interrupted by these operative procedures essential for ICSS. Methamphetamine increased the rate of ICSS in the normal and sympathectomized cat and markedly prolonged extinction time in both preparations. (18 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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