Abstract
Tested the effects of acute (Exp. I) and chronic (Exp. II) conditioned fear on gastric acidity in pylorus-ligated female Sprague-Dawley rats. Exp. I indicated that the acidity of 10 Ss exposed to conditioned fear during 14 hr. of accumulation of gastric juice was not significantly different from that of 10 controls. In Exp. II it was found that 16 Ss from 2 experimental groups which received 7 days of stimulation by light and shock followed by further stimulation during 14 hr. of pylorus ligation had significantly lower gastric acidity than 8 control Ss. These observations support the view that the sympathetic activity associated with fear-provoking situations, particularly chronic ones, suppresses rather than promotes gastric acidity. (24 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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