8,449 Result(s)
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Article
Effect of l-tetrahydropalmatine on dopamine release and metabolism in the rat striatum
In vivo voltammetric measurements of striatal extracellular DOPAC concentrations and of striatal DA release in combination with post-mortem analysis of striatal catechols were performed in the rat to study the...
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Article
The fiber projections from the dentate nucleus to the reticular formation of the brain stem in the rabbit
The projections from the dentate nucleus to the reticular formation of the brain stem in rabbit have been examined by means of the Fink-Heimer technique. The fibers arising from the dentate nucleus primarily p...
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The cerebellar projection from the reticular formation of the brain stem in the rabbit
By retrograde transport of horseradish peroxidase the reticulocerebellar projections were examined in twenty-six rabbits.
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Article
Acceleration of brain tubulin formation in the optic lobe of the chick embryo by light stimulation
The effect of light exposure on the protein patterns of optic lobe and forebrain of the chick embryo was analysed by a high-resolution micro-two-dimensional polyacryamide gel electrophoresis and computerized q...
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Article
Dopamine affects two voltage-dependent K+ currents of identified rat lactotroph cells
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Clozapine in China: a review and preview of US/PRC collaboration
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Direct projection from the dorsal hypothalamic area to the nucleus raphe pallidus: a study using anterograde transport with Phaseolus vulgaris leucoagglutinin in the rat
A hypothalamic projection to the nucleus raphe pallidus of the medulla was examined using the anterograde tracing technique based on Phaseolus vulgaris leucoagglutinin (PHA-L) in the rat. After the iontophoretic ...
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Inhibitory actions of adenosine differ between ear and mesenteric arteries in the rabbit
In isolated ear and mesenteric arteries of rabbit, adenosine inhibited nerve-mediated contractions to a similar extent. However, the amplitude of the excitatory junction potentials evoked by perivascular nerve...
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Article
How to unconfound the directional and orientational information in visual neuron's response
When drifting bars or gratings are used as visual stimuli, information about orientation specificity (which has a period of 180°) and direction specificity (which has a period of 360°) is inherently confounded...
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Abstract of the 68th Meeting (Spring Meeting) 6–9 March 1990, Heidelberg
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Article
The morphology and distribution of photoreceptors in the retina of Bufo marinus
The number, cell morphology and retinal distribution of rods and cones were determined in the retina of the toad, Bufo marinus. Adult animals were sacrificed, both eyes were removed and prepared for either tangen...
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Article
A mathematical model for resolution enhancement in layered sensory systems
Heiligenberg (1987) recently proposed a model to explain how the representation of a stimulus variable through an ordered array of broadly tuned receptors could allow a degree of stimulus resolution greatly ex...
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Article
Anoxic block of GABAergic IPSPs
In rat hippocampal slices GABAergic IPSPs are very rapidly suppressed by anoxia (in<2 min). Both early (GABAA) and late (GABAB) components are affected. After reoxygenation, the IPSPs recover, but only slowly and...
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Article
Antidromic identification of midbrain near response cells projecting to the oculomotor nucleus
Medial rectus motoneurons carry both conjugate and vergence eye position signals. Abducens internuclear neurons, whose axons travel in the medial longitudinal fasciculus, provide these motoneurons with the maj...
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Article
Distribution of glutamine-like immunoreactivity in the cerebellum of rat and baboon (Papio anubis) with reference to the issue of metabolic compartmentation
The cellular and subcellular localization of glutamine, a major glutamate precursor, was studied by means of an antiserum raised against glutaraldehydefixed glutamine. Ultrathin sections from the cerebellar co...
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Unusual effects of SCN and lyotropic anions on contractility of vascular smooth muscle from female rats
Replacement of extracellular chloride ions by thiocyanate anions (SCN−) followed by washout in normal chloride-containing solution produced contractions in isolated rat aortas and portal veins of female rats foll...
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Differential cellular distribution of two sulphur-containing amino acids in rat cerebellum
An antiserum to homocysteic acid was raised in rabbits. Immunogens were prepared by coupling this amino acid to bovine serum albumin by means of glutaraldehyde and paraformaldehyde. When applied to semithin or...
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Article
Comparison of the effects of losigamone and its isomers on maximal electroshock induced convulsions in mice and on three different patterns of low magnesium induced epileptiform activity in slices of the rat temporal cortex
Losigamone (AO-33) is a recemate of a tetronic acid derivative. The effects of losigamone and its three isomers (AO-242, AO-294 and AO-23) were compared on maximal electroshock (MES) induced convulsions in mic...
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Article
Potassium currents of rat basilar artery smooth muscle cells
Primary isolates of smooth muscle cells from the basilar artery of the rat were studied using whole-cell and single-channel patch-clamp techniques. Two distinct potassium currents were characterized. With low ...
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Article
Extracellular magnesium regulates intracellular free Mg2+ in vascular smooth muscle cells
Regulatory effects of extracellular magnesium ions ([Mg2+]o) on intracellular free ionized magnesium ([Mg2+]i) were exmained in cultured vascular smooth muscle cells (VSMCs) fromrat aorta by digital imaging micro...
