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Journal of Neurophysiology, Vol 72, Issue 2 507-520, Copyright © 1994 by APS
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H. Bergman, T. Wichmann, B. Karmon and M. R. DeLong
Department of Physiology, Hebrew University, Hadassah Medical School, Jerusalem, Israel.
1. The neuronal mechanisms underlying the major motor signs of Parkinson's disease were studied in the basal ganglia of parkinsonian monkeys. Three African green monkeys were systemically treated with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) until parkinsonian signs, including akinesia, rigidity, and a prominent 4- to 8-Hz tremor, appeared. The activity of neurons in the subthalamic nucleus (STN) and in the internal segment of the globus pallidus (GPi) was recorded before (STN, n = 220 cells; GPi, n = 175 cells) and after MPTP treatment (STN, n = 326 cells; GPi, n = 154 cells). 2. In STN the spontaneous firing rate was significantly increased from 19 +/- 10 (SD) spikes/s before to 26 +/- 15 spikes/s after MPTP treatment. Division of STN neurons recorded after MPTP treatment into cells with rhythmic bursts of discharge occurring at 4-8 Hz (as defined by autocorrelation analysis) and neurons without 4- to 8-Hz periodic activity revealed an even more prominent increase in the firing rate of the 4- to 8-Hz oscillatory neurons. 3. In GPi overall changes in the average firing rate of cells were inconsistent between different animals and behavioral states. However, the average firing rate of the subpopulation of neurons with 4- to 8-Hz periodic oscillatory activity after treatment with MPTP was significantly increased over that of all neurons before MPTP treatment (from 53 to 76 spikes/s, averaged across monkeys). 4. In the normal state the percentage of neurons with burst discharges (as defined by autocorrelation analysis) was 69% and 78% in STN and GPi, respectively. After MPTP treatment the percentage of cells that discharged in bursts was increased to 79% and 89%, respectively. At the same time the average burst duration decreased (from 121 +/- 98 to 81 +/- 99 ms in STN and from 213 +/- 120 to 146 +/- 134 ms in GPi) with no significant change in the average number of spikes per burst. 5. Periodic oscillatory neuronal activity at low frequency, highly correlated with tremor, was detected in a large number of cells in STN and GPi after MPTP treatment (average oscillation frequency 6.0 and 5.1 Hz, respectively). The autocorrelograms of spike trains of these neurons confirm that the periodic oscillatory activity was very stable. The percentage of cells with 4- to 8-Hz periodic activity significantly increased from 2% to 16% in STN and from 0.6% to 25% in GPi with the MPTP treatment.(ABSTRACT TRUNCATED AT 400 WORDS)
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D. N. Ruskin, D. A. Bergstrom, and J. R. Walters Nigrostriatal Lesion and Dopamine Agonists Affect Firing Patterns of Rodent Entopeduncular Nucleus Neurons J Neurophysiol, July 1, 2002; 88(1): 487 - 496. [Abstract] [Full Text] [PDF] |
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P. Salin, C. Manrique, C. Forni, and L. K.-L. Goff High-Frequency Stimulation of the Subthalamic Nucleus Selectively Reverses Dopamine Denervation-Induced Cellular Defects in the Output Structures of the Basal Ganglia in the Rat J. Neurosci., June 15, 2002; 22(12): 5137 - 5148. [Abstract] [Full Text] [PDF] |
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J. E. Hanson and D. Jaeger Short-Term Plasticity Shapes the Response to Simulated Normal and Parkinsonian Input Patterns in the Globus Pallidus J. Neurosci., June 15, 2002; 22(12): 5164 - 5172. [Abstract] [Full Text] [PDF] |
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D. Cunic, L. Roshan, F. I. Khan, A. M. Lozano, A. E. Lang, and R. Chen Effects of subthalamic nucleus stimulation on motor cortex excitability in Parkinson's disease Neurology, June 11, 2002; 58(11): 1665 - 1672. [Abstract] [Full Text] [PDF] |
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J. O. Dostrovsky, W. D. Hutchison, and A. M. Lozano The Globus Pallidus, Deep Brain Stimulation, and Parkinson's Disease Neuroscientist, June 1, 2002; 8(3): 284 - 290. [Abstract] [PDF] |
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S. Sestini, A. Scotto di Luzio, F. Ammannati, M. T. R. De Cristofaro, A. Passeri, S. Martini, and A. Pupi Changes in Regional Cerebral Blood Flow Caused by Deep-Brain Stimulation of the Subthalamic Nucleus in Parkinson's Disease J. Nucl. Med., June 1, 2002; 43(6): 725 - 732. [Abstract] [Full Text] [PDF] |
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R. Levy, P. Ashby, W. D. Hutchison, A. E. Lang, A. M. Lozano, and J. O. Dostrovsky Dependence of subthalamic nucleus oscillations on movement and dopamine in Parkinson's disease Brain, June 1, 2002; 125(6): 1196 - 1209. [Abstract] [Full Text] [PDF] |
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M. Cassidy, P. Mazzone, A. Oliviero, A. Insola, P. Tonali, V. D. Lazzaro, and P. Brown Movement-related changes in synchronization in the human basal ganglia Brain, June 1, 2002; 125(6): 1235 - 1246. [Abstract] [Full Text] [PDF] |
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J. A. Goldberg, T. Boraud, S. Maraton, S. N. Haber, E. Vaadia, and H. Bergman Enhanced Synchrony among Primary Motor Cortex Neurons in the 1-Methyl-4-Phenyl-1,2,3,6-Tetrahydropyridine Primate Model of Parkinson's Disease J. Neurosci., June 1, 2002; 22(11): 4639 - 4653. [Abstract] [Full Text] [PDF] |
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M. S. Turner, L. Mignon, and T. C. Napier Alterations in Responses of Ventral Pallidal Neurons to Excitatory Amino Acids after Long-Term Dopamine Depletion J. Pharmacol. Exp. Ther., April 1, 2002; 301(1): 371 - 381. [Abstract] [Full Text] [PDF] |
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R. Levy, W. D. Hutchison, A. M. Lozano, and J. O. Dostrovsky Synchronized Neuronal Discharge in the Basal Ganglia of Parkinsonian Patients Is Limited to Oscillatory Activity J. Neurosci., April 1, 2002; 22(7): 2855 - 2861. [Abstract] [Full Text] [PDF] |
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D. Terman, J. E. Rubin, A. C. Yew, and C. J. Wilson Activity Patterns in a Model for the Subthalamopallidal Network of the Basal Ganglia J. Neurosci., April 1, 2002; 22(7): 2963 - 2976. [Abstract] [Full Text] [PDF] |
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M. D. Bevan, P. J. Magill, N. E. Hallworth, J. P. Bolam, and C. J. Wilson Regulation of the Timing and Pattern of Action Potential Generation in Rat Subthalamic Neurons In Vitro by GABA-A IPSPs J Neurophysiol, March 1, 2002; 87(3): 1348 - 1362. [Abstract] [Full Text] [PDF] |
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B. L. Waszczak, L. P. Martin, H. E. Finlay, N. Zahr, and J. R. Stellar Effects of Individual and Concurrent Stimulation of Striatal D1 and D2 Dopamine Receptors on Electrophysiological and Behavioral Output from Rat Basal Ganglia J. Pharmacol. Exp. Ther., March 1, 2002; 300(3): 850 - 861. [Abstract] [Full Text] [PDF] |
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W. S. Cobb and E. D. Abercrombie Distinct Roles for Nigral GABA and Glutamate Receptors in the Regulation of Dendritic Dopamine Release under Normal Conditions and in Response to Systemic Haloperidol J. Neurosci., February 15, 2002; 22(4): 1407 - 1413. [Abstract] [Full Text] [PDF] |
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T. Wichmann, M. A. Kliem, and J. Soares Slow Oscillatory Discharge in the Primate Basal Ganglia J Neurophysiol, February 1, 2002; 87(2): 1145 - 1148. [Abstract] [Full Text] [PDF] |
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C. W. Olanow The role of dopamine agonists in the treatment of early Parkinson's disease Neurology, February 1, 2002; 58(90001): S33 - 41. [Abstract] [Full Text] |
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M M Lanotte, M Rizzone, B Bergamasco, G Faccani, A Melcarne, and L Lopiano Deep brain stimulation of the subthalamic nucleus: anatomical, neurophysiological, and outcome correlations with the effects of stimulation J. Neurol. Neurosurg. Psychiatry, January 1, 2002; 72(1): 53 - 58. [Abstract] [Full Text] [PDF] |
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L. Timmermann, J. Gross, M. Dirks, J. Volkmann, H.-J. Freund, and A. Schnitzler The cerebral oscillatory network of parkinsonian resting tremor Brain, January 1, 2002; 126(1): 199 - 212. [Abstract] [Full Text] [PDF] |
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