Differential effects of subdiaphragmatic vagotomy on NaCl-induced aversion learning |
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Authors: | M Arnedo M Gallo A Agüero A Puerto |
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Affiliation: | Departamento de Psicología Experimental y Fisiología del Comportmiento, Granada, Spain. |
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Abstract: | The vagus nerve has been proposed in numerous studies as one of the peripheral mechanisms involved in drug-induced taste aversion learning, although available data have been controversial. The differential results obtained in the present series of experiments with vagotomy and NaCl-induced short-term and long-term aversion learning suggest that the vagal system plays a decisive role in tasks requiring the rapid detection of an aversive substance in the gastrointestinal tract (short-term tasks). In contrast, this mechanism appears to be unnecessary in long-term tasks, where learning may be mediated by alternative slower-acting peripheral mechanisms such as the humoral system. |
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