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OPERANT DISCRIMINATION OF AN INTEROCEPTIVE STIMULUS IN RHESUS MONKEYS 1
Author(s) -
Slucki Henry,
Adam Gyorgi,
Porter Robert W.
Publication year - 1965
Publication title -
journal of the experimental analysis of behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 61
eISSN - 1938-3711
pISSN - 0022-5002
DOI - 10.1901/jeab.1965.8-405
Subject(s) - reinforcement , stimulus (psychology) , primate , psychology , stimulation , aversive stimulus , lever , neuroscience , audiology , medicine , social psychology , psychotherapist , physics , quantum mechanics
Five rhesus macaques monkeys surgically prepared with Thiry small intestinal (jejunum) loops and implanted brain electrodes were restrained in primate chairs and kept on 23‐hr deprivation‐feeding cycle. After being trained to press a lever for sugar pills on an FR 25 schedule of reinforcement, a discrimination training procedure was established. Lever presses were reinforced during the S D —a non‐aversive mechanical stimulus applied to the internal walls of the Thiry loop by rhythmic inflation‐deflation of a small latex balloon by air at the rate of one cycle per sec at 100 mm Hg pressure. The SΔ was the absence of the visceral stimulation. The monkeys successfully discriminated between presence and absence of the internal stimulus. A discrimination reversal was attempted and completed on one monkey. The results clearly show operant discrimination based on an interoceptive stimulus. Cortical and subcortical EEG records reflected the onset but not termination of the visceral stimulation.