Cannabinoid compounds have been reported to excite ventral tegmental neurons through activation of cannabinoid CB1 receptors. More recently, biochemical and whole-cell voltage-clamp studies carried out on CB1-transfected AtT20 cells have shown a rapid desensitization of these receptors following activation of protein kinase C by 4-a-phorbol. To investigate the possible physiological correlates ...

Horseradish peroxidase (HRP) was injected to various parts of the amygdala in 50 rats. Retrograde axonal transport revealed that tegmental areas containing biogenic amines: dorsal and median raphe nuclei, locus coeruleus and ventral tegmental area, project diffusely to various amygdaloid areas. Moreover, HRP labeled cells were found in the parabrachial nucleus (following injection of the latera...

BNST Bed nucleus of the stria terminalis CCK Cholecystokinin cGMP Cyclic guanosine monophosphate DCN Dorsal central autonomic nucleus fMRI Functional magnetic resonance imaging IML Intermediolateral cell column LCTF Lateral central tegmental field LSt cells Lumbar spinothalamic cells MEA Medial amygdala MPOA Medial preoptic area NO Nitric oxide nPGi Nucleus paragigantocellularis NPY Neuropeptid...

We have studied the connections of the tectum of the rattlesnake by tectal application of horseradish peroxidase. The tectum receives bilateral input from nucleus lentiformis mesencephali, posterolateral tegmental nuclei, anterior tegmental nuclei and periventricular nuclei; ipsilateral input from nucleus geniculatus pretectalis, and lateral geniculate nucleus pars dorsalis; and contralateral i...