S T Cunningham

Previous research has demonstrated increased pain threshold during copulation, gestation, and parturition in animals. In the laboratory, mechanostimulation of the vaginocervical region in many animals, as well as humans, can...

The following experiments were performed to ascertain the role of the nucleus accumbens in opiate-dopamine interactions using measures of locomotor activity. Three separate experiments were carried out. In Experiment 1,...

Although manipulation of second messenger systems is widespread in cell biology, there are few experiments examining the consequences of such manipulation on behavior. In three separate experiments, we extended earlier...

We investigated opiate-amphetamine interactions within the nucleus accumbens in responding for conditioned reward. Separate groups of animals received 4-day intra-accumbens treatment with either saline, morphine (0.5 microgram/0.5 microliter), [D-Ala2 NMe-Phe4...

Reflexive ovulation in the rat, induced by caesarean section performed on day 22 of pregnancy, was blocked by prior bilateral transection of the pelvic and/or hypogastric nerves, which convey afferent...

In the present experiments, we examined the roles of opiate receptor subtypes in the nucleus accumbens in spontaneous motor behavior and responding for conditioned reward. Locomotor activity was measured using...

Bilateral transection of the pelvic and/or hypogastric nerves, which convey afferent activity from the reproductive tract, was performed to ascertain the role of these nerves in the analgesic and motoric...