Haloperidol reduces ethanol-induced motor activity stimulation but not conditioned place preference

Psychopharmacology (Berl). 1992;107(2-3):453-6. doi: 10.1007/BF02245175.

Abstract

This experiment examined the impact of a dopamine receptor blocker on ethanol's rewarding effect in a place conditioning paradigm. DBA/2J mice received four pairings of a tactile stimulus with ethanol (2 g/kg, IP), haloperidol (0.1 mg/kg, IP)+ethanol, or haloperidol alone. A different stimulus was paired with saline. Ethanol produced increases in locomotor activity that were reduced by haloperidol. However, conditioned preference for the ethanol-paired stimulus was not affected by haloperidol. Haloperidol alone decreased locomotor activity during conditioning and produced a place aversion. These results indicate a dissociation of ethanol's activating and rewarding effects. Moreover, they suggest that ethanol's ability to induce conditioned place preference is mediated by nondopaminergic mechanisms.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Conditioning, Operant / drug effects*
  • Ethanol / pharmacology*
  • Haloperidol / pharmacology*
  • Male
  • Mice
  • Mice, Inbred DBA
  • Motor Activity / drug effects*
  • Reward

Substances

  • Ethanol
  • Haloperidol