Conditioning with delayed vitamin injections.

  title={Conditioning with delayed vitamin injections.},
  author={J Martinez Garcia and Frank R. Ervin and Clifford Yorke and R. A. Koelling},
  volume={155 3763},
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.