Results 251 to 260 of about 29,874 (272)

Rhythmicity, randomness and synchrony in climbing fiber signals

Trends in Neurosciences, 2005
The role of the climbing fiber input to the cerebellum has been enigmatic, with recent studies focusing on its temporal and spatial firing patterns. Debate remains as to whether climbing fibers provide a periodic clock for coordinating movements or lead to long-term modification of Purkinje cell activity as the basis of motor learning.
Shigeru, Kitazawa, Daniel M, Wolpert
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Climbing fiber evoked potassium release in cat cerebellum

Pflügers Archiv, 1976
K+-selective micropipettes were used to measure the extracellular K+-signal associated with the activation of a single Purkinje cell, via a climbing fiber (CF). The maximum K+-signal had a magnitude of 0.3 - 0.5 mM and was correlated with a positive all-or-none extracellular potential.
G T, Bruggencate, C, Nicholson, H, Stöckle   +2 more
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Release of cerebellar inhibition by climbing fiber deafferentation

Experimental Brain Research, 1985
Cerebellar units were recorded extracellularly in rats before and after an intraveinous injection of 3-acetylpyridine destroying selectively the IO. All the Purkinje cells show a loss of the complex discharge between 2 h 15 min and 2 h 45 min after treatment.
Batini, C., Billard, J.M.
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Histological Technic for Cerebellar Climbing and Mossy Fibers

Stain Technology, 1948
In order to, avoid disadvantages attendant upon the use of fresh frozen sections, or of block impregnation with silver, in staining climbing or mossy fibers of the cerebellum, Rio Hortega's double impregnation method for nerve fibers is useful. This consists of prolonged formalin fixation prior to cutting frozen sections (which thereafter are easier to
R M E, CARREA, M, REISSIG, F A, METTLER
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Patterns of intersection among climbing fiber receptive fields

Neuroscience, 1988
Peripheral receptive fields of climbing fiber responses from the anterior lobe of the cat display large intersections and distinct organizations. Receptive fields of the extremities and face have boundaries that follow the lines of a grid. Receptive fields of the tail and ventral trunk and some of the receptive fields on the extremities form concentric
G, McCollum, L T, Robertson
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Axoplasmic Flow in Cerebellar Mossy and Climbing Fibers

Archives of Neurology, 1973
Tritiated leucine was injected unilaterally into pontine, inferior olivary, or reticular nuclei of cat brainstem to establish sources of cerebellar mossy and climbing terminals. Allowing 24 to 72 hours for label uptake and active transport by axoplasmic flow to cerebellar cortex, autoradiographs were prepared with the use of parasagittal sections from ...
M G, Murphy, J L, O'Leary, D, Cornblath
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Plasticity of climbing fibers after laser axotomy

SPIE Proceedings, 2010
In the adult nervous system, different population of neurons corresponds to different regenerative behavior. Although previous works show that olivocerebellar fibers are capable of axonal regeneration in a suitable environment as a response to injury 1 , we have hitherto no details about the real dynamics of fiber regeneration. We coupled two photon
ALLEGRA MASCARO, ANNA LETIZIA, P. Cesare, SACCONI, LEONARDO, G. Grasselli, P. Strata, PAVONE, FRANCESCO SAVERIO   +5 more
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Experimental evidence for climbing fibers in the avian cerebellum

Journal of Comparative Neurology, 1977
AbstractThis study identifies climbing fibers in the cerebellar cortex following brain stem lesions. Antegrade nerve fiber degeneration was studied after electrolytic destruction of rhombencephalic structures in 24 domestic fowl. Direct damage to the cerebellum was precluded by a retropharyngeal surgical approach. Only lesions that include the inferior
S L, Freedman, J, Voogd, G J, Vielvoye
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Bidirectional plasticity at developing climbing fiber–Purkinje neuron synapses

European Journal of Neuroscience, 2008
AbstractClimbing fibers provide one of the two major excitatory inputs to the cerebellar cortex. In an immature animal, several climbing fibers form synapses with one Purkinje neuron. During postnatal development most climbing fiber innervations with a Purkinje neuron are eliminated and only one strong fiber remains.
Gen, Ohtsuki, Tomoo, Hirano
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Inhibition of cerebellar Purkinje cells by climbing fiber input

Pfl�gers Archiv European Journal of Physiology, 1972
The inhibitory effects of the climbing fiber input on cerebellar Purkinje cells was studied in cats. 1. The excitatory and the inhibitory effect of the CF input was observed independent from each other. 2. At C-T intervals longer than 20 msec the EPSP of the Purkinje cell produced by CF activation was reduced by a preceding inferior ...
D, Burg, F J, Rubia
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