Conditioning with Delayed Vitamin Injections

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Science  10 Feb 1967:
Vol. 155, Issue 3763, pp. 716-718
DOI: 10.1126/science.155.3763.716


Rats deficient in thiamine were allowed to drink saccharin-fla vored water. They were then given an injection of thiamine which caused their intake of the nonnutritive fluid to increase. Delay of the intramuscular injection up to 30 minutes had no effect upon the acquisition of this condi tioning. Presumably, this delay reflects specialization in the central integrative mechanisms which serve these afferent modalities.