...Robert J. Carey; Susan Kenney The present report presents evidence that operant conditioning processes may contribute to hypokinetic effects in rats induced by repeated haloperidol (HAL) treatments. Twenty-four male Sprague-Dawley rats were subdivided into three equal groups and given 9 daily...

... Behavioral sensitization Amygdala lesions Hyperactivity Omniphagia Conditioning 19 2 2008 © 1982 S. Karger AG, Basel 1982 Copyright / Drug Dosage / Disclaimer Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized...

... to the tone was gradually extinguished. However, a significant increase in rectal temperature in response to the tone was again observed following a second set of five morphine-tone pairings. 14 2 2008 Morphine Hypothermia Hyperthermia Conditioning Extinction Conditional stimulus © 1975...

... changes contribute to the enduring synaptic plasticity that underlies sensitized responses to psychostimulants and drug-conditioned memories leading to compulsive drug use and frequent relapse after withdrawal. Nevertheless, increased BDNF levels could also have a role as a protection factor in addiction...