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In order to investigate the mode of action of biogenic amines in rat cerebral cortex, the unitary activity of spontaneously firing neurons and their excitatory response to acetylcholine (ACh) were examined using microiontophoretic administration of dopamine (DA), noradrenaline (NA) and serotonin (5-HT). The predominant effect of these biogenic amines on the(More)
The Louisiana Black Bear is one of 16 currently recognized subspecies of American Black Bear. This subspecies is a large, bulky mammal with long black hair and a short, well-haired tail. The facial profile is rather blunt, the eyes small, and the nose pad broad with large nostrils. The muzzle is yellowish-brown with a white patch sometimes present on the(More)
In an attempt to determine the functional role of catecholamine (CA) nerve terminals in cerebral cortex the release of endogenous norepinephrine (NE) and dopamine (DA) into superfusates from visual and somatosensory cortex of the cat have been measured by a sensitive radiometric enzymatic assay based on the methylation of CA by catechol-O-methyltransferase(More)