Chronic opiate exposure leads to maladaptive changes in brain function. In view of the
localization of opiate receptors in mammalian visual system, chronic opiate exposure is …

The primary visual cortex (V1) plays an important role in vision and visual perception.
Studies in many brain regions demonstrate that opiate abuse can change excitatory and …

Opiates disrupt neural functions in many brain areas, including visual cortex. Previous
studies have indicated substantial changes of many neuronal response properties induced …

SUMMARY 1 Chronic morphine exposure results in degradation of the functional properties
of cortical cells. However, little evidence has been reported about the effect of morphine on …

Chronic morphine exposure can induce addiction and affect synaptic plasticity, but the
underlying neuronal mechanisms remain unknown. Two forms of short-term synaptic …

Electrophysiological and biochemical studies have indicated that GABAergic modulation is
involved in the opioid-induced altering of response properties of visual cortical cells and …

Opiate receptor avidity (Bmax′/KD) was measured in four rhesus monkeys following
unilateral lesioning of the optic tract combined with transection of the corpus callosum and …

Chronic exposure to morphine can impair performance in tasks which need sensory
processing. Using single unit recordings we investigate the effect of chronic morphine …

Repeated treatment of psychotropic drugs produces changes in brain and behavior that far
outlast their initial neuropharmacological effects. The nature of persistent drug-induced …

Aim: To investigate the effect of chronic morphine exposure on the receptive field properties
of lateral geniculate nucleus (LGN) neurons in cats. Methods: Cats were injected with …