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Inputs from locus coeruleus (LC) appear to be important for altering sensorimotor responses in situations requiring increase vigilance or alertness. This study documents the organization of coeruleo-vestibular pathways in rats, rabbits and monkeys. A lateral descending noradrenergic bundle (LDB) projects from LC to the superior vestibular nucleus (SVN) and(More)
Unipolar brush cells are a class of interneurons in the granular layer of the mammalian cerebellum that receives excitatory mossy fiber synaptic input in the form of a giant glutamatergic synapse. Previously, it was shown that the unipolar brush cell axon branches within the granular layer, giving rise to large terminals. Single mossy fiber stimuli evoke a(More)
This study describes a regionally selective projection of tyrosine hydroxylase and dopamine beta-hydroxylase-immunoreactive fibers from locus coeruleus (LC) and the A4 region of nucleus subcoeruleus to the vestibular nuclear complex in Long-Evans and Sprague-Dawley rats. These fibers travel in two distinct pathways. A lateral descending noradrenergic bundle(More)
Anatomical and electrophysiological evidence has contributed to the hypothesis that microzones in the mammalian flocculus are organized to reflect control of eye movements in the planes of semicircular canals. Adult male Long-Evans rats received iontophoretic injections of FluoroGold and/or tetramethylrhodamine dextran amine (10,000 molecular weight,(More)
We tested the hypothesis that Long-Evans (LE) and Sprague-Dawley (SD) rat strains were equally sensitive to the noradrenergic neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP-4) with respect to central lesions of locus coeruleus (LC) terminals as measured by immunohistochemical localization of dopamine-beta-hydroxylase (D beta H). Analysis of D(More)
Several physiological studies have shown that the subcommissural organ (SCO) is influenced by catecholamines. This study provides immunohistochemical evidence for a noradrenergic input to the SCO of rats. A light plexus of tyrosine hydroxylase (TH)-and dopamine-beta-hydroxylase (D beta H)-positive axons present in the SCO of both Long-Evans and(More)
Retinal application of gamma-aminobutyric acid (GABA) antagonists block direction-sensitive (DS) responses in turtle in two ways: (1) the selectivity of DS retinal ganglion cells in vitro, and (2) the eye's ability to track the direction of full field image motion. The experiments described below demonstrate that an important locus for retinal slip(More)
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