title: Antagonism of Low Dose Amphetamine Disruption of Latent Inhibition in Rats By Haloperidol, and By the 5Ht-3 Antagonist, Ondansetron: Warburton EC, Feldon J*, Weiner I*, Gray JA, Joseph MH MRC Brain, Behaviour and Psychiatry Research Group, Dept of Psychology, Institute of Psychiatry, London, SE5 8AF and *Dept of Psychology, University of Tel Aviv, Israel.