Search Results - "BLOEDEL, J. R"

Control of aperture closure during reach-to-grasp movements in Parkinson's disease by RAND, M. K, SMILEY-OYEN, A. L, SHIMANSKY, Y. P, BLOEDEL, J. R, STELMACH, G. E

“…This study examined whether the pattern of coordination between arm-reaching toward an object (hand transport) and the initiation of aperture closure for…”
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Inferior olivary inactivation abolishes conditioned eyeblinks: Extinction or cerebellar malfunction? by Zbarska, S., Holland, E.A., Bloedel, J.R., Bracha, V.

“…The inferior olive (IO) is a required component of neural circuits controlling the classical conditioning of eyeblink responses. Previous reports indicated…”
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Adaptation of reach-to-grasp movement in response to force perturbations by RAND, M. K, SHIMANSKY, Y, STELMACH, G. E, BLOEDEL, J. R

“…This study examined how reach-to-grasp movements are modified during adaptation to external force perturbations applied on the arm during reach. Specifically,…”
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Glutamate Neurotransmission in the Cerebellar Interposed Nuclei: Involvement in Classically Conditioned Eyeblinks and Neuronal Activity by Aksenov, D. P, Serdyukova, N. A, Bloedel, J. R, Bracha, V

“…Department of Biomedical Sciences, Iowa State University, Ames, Iowa Submitted 8 June 2004; accepted in final form 19 August 2004 The cerebellar interposed…”
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The cerebellum and eye-blink conditioning: learning versus network performance hypotheses by Bracha, V, Zbarska, S, Parker, K, Carrel, A, Zenitsky, G, Bloedel, J.R

“…Abstract Classical conditioning of the eye-blink reflex in the rabbit is a form of motor learning that is uniquely dependent on the cerebellum. The cerebellar…”
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Patients with cerebellar lesions cannot acquire but are able to retain conditioned eyeblink reflexes by BRACHA, V, ZHAO, L, WUNDERLICH, D. A, MORRISSY, S. J, BLOEDEL, J. R

“…The purpose of these experiments was to examine the role of the human cerebellum in the acquisition and retention of conditioned reflexes. Normal human…”
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Effects of Inactivating Individual Cerebellar Nuclei on the Performance and Retention of an Operantly Conditioned Forelimb Movement by Milak, M. S, Shimansky, Y, Bracha, V, Bloedel, J. R

“…M. S. Milak , Y. Shimansky , V. Bracha , and J. R. Bloedel Division of Neurobiology, Barrow Neurological Institute, Phoenix, Arizona 85013 Milak, M. S.,…”
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Effects of accuracy constraints on reach-to-grasp movements in cerebellar patients by RAND, M. K, SHIMANSKY, Y, STELMACH, G. E, BRACHA, V, BLOEDEL, J. R

“…Reach-to-grasp movements of patients with pathology restricted to the cerebellum were compared with those of normal controls. Two types of paradigms with…”
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Conditioned and unconditioned forelimb reflex systems in the cat : involvement of the intermediate cerebellum by KOLB, F. P, IRWIN, K. B, BLOEDEL, J. R, BRACHA, V

“…Temporary inactivation of the cerebellar interposed nuclei was used to assess the role of the intermediate cerebellum in the performance of forelimb…”
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Grasping component alterations and limb transport by TIMMANN, D, STELMACH, G. E, BLOEDEL, J. R

“…The kinematic changes associated with the manipulation and transport components during a prehensile movement were examined using an experimental paradigm that…”
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Responses of sagittally aligned Purkinje cells during perturbed locomotion: synchronous activation of climbing fiber inputs by Lou, J S, Bloedel, J R

“…1. These experiments were performed to test the hypothesis that climbing fiber inputs to sagittally aligned Purkinje cells located in a single folium are…”
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Ataxia reflected in the simulated movements of patients with cerebellar lesions by KAGERER, F. A, BRACHA, V, WUNDERLICH, D. A, STELMACH, G. E, BLOEDEL, J. R

“…Previous studies demonstrated that the time required to simulate mentally a complex movement is highly correlated with the time required to execute the same…”
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Adaptive changes in responses to repeated locomotor perturbations in cerebellar patients by RAND, M. K, WUNDERLICH, D. A, MARTIN, P. E, STELMACH, G. E, BLOEDEL, J. R

“…This study examined the responses of cerebellar patients and a group of age- and sex-matched control subjects to repeated changes in treadmill speed in order…”
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The influence of movement segment difficulty on movements with two-stroke sequence by RAND, M. K, ALBERTS, J. L, STELMACH, G. E, BLOEDEL, J. R

“…Arm movements in the horizontal plane consisting of two segments were examined to determine whether the difficulty of the second segment influenced the…”
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Visuomotor learning in cerebellar patients by Timmann, D., Shimansky, Yu, Larson, P.S., Wunderlich, D.A., Stelmach, G.E., Bloedel, J.R.

“…The aim of the present study was to demonstrate that patients with pathology affecting substantial regions of the cerebellum can improve their performance in a…”
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Responses of sagittally aligned Purkinje cells during perturbed locomotion: relation of climbing fiber activation to simple spike modulation by Lou, J S, Bloedel, J R

“…1. The purpose of these experiments is to test the hypothesis that the synchronous activation of sagittally aligned Purkinje cells by a physiologically…”
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Relationship of simultaneously recorded cerebellar nuclear neuron discharge to the acquisition of a complex, operantly conditioned forelimb movement in cats by MILAK, M. S, BRACHA, V, BLOEDEL, J. R

“…This study was designed to examine the changes in the modulation of small populations of cerebellar neurons during the acquisition of a complex, operantly…”
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On the cerebellum, cutaneomuscular reflexes, movement control and the elusive engrams of memory by Bloedel, James R., Bracha, Vlastislav

“…This review focuses on the role of the cerebellum in regulating cutaneomuscular reflexes and provides a hypothesis regarding the way in which this action…”
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The human cerebellum and associative learning: dissociation between the acquisition, retention and extinction of conditioned eyeblinks by Bracha, Vlastislav, Zhao, Lingke, Irwin, Kristina B., Bloedel, James R.

“…The present paper is part of a systematic exploration of the neural substrates of conditioned eyeblink responses in humans. Normal subjects and patients with…”
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Movement accuracy constraints in Parkinson’s disease patients by Rand, Miya K, Stelmach, George E, Bloedel, James R

“…This study examined the hypothesis that the kinematics of movements performed by PD (Parkinson’s disease) patients are differentially affected depending on…”
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