Cited by 134Neurological disorders and treatmentsMotor Control and AdaptationObsessive-Compulsive Spectrum Disorders

Posture-Related Oscillations in Human Cerebellar Thalamus in Essential Tremor Are Enabled by Voluntary Motor Circuits

Hua, Sherwin E., Lenz, Frederick A.·2005·Journal of Neurophysiology

Abstract

The mechanism of essential tremor (ET) is unclear. Animal models of tremor and functional imaging studies in ET predict that the cerebellum and a cerebellar recipient thalamic nucleus (ventral intermediate, Vim) should exhibit oscillatory activity during rest and during tremor due to abnormal olivo-cerebellar activity. Physiologic responses of 152 single neurons were recorded during awake mapping of the ventral thalamus in seven patients with ET prior to thalamotomy. During postural tremor, spectral cross-correlation analysis demonstrated that 51% of the neurons studied exhibited a concentration of power at tremor frequency that was correlated with electromyography, i.e., tremor neurons. During rest, thalamic neurons did not exhibit tremor-frequency activity. Among the three thalamic nuclei surveyed, Vim had a significantly higher proportion of tremor neurons than did the principal somatic sensory nucleus (ventral caudal, Vc) or a pallidal recipient thalamic nucleus (ventral oral posterior, Vop). Neurons related to active movement (voluntary neurons) had significantly greater tremor-related activity than did nonvoluntary neurons. These findings are not consistent with a model of continuous olivo-cerebellar driving of the motor cortex through thalamic connections. Instead ET may be facilitated by motor circuits that enable tremor-related thalamic activity during voluntary movement. Additionally, a subgroup of tremor neurons with proprioceptive inputs were identified that may a…

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Crossref · 10.1152/jn.00527.2004

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  • During essential tremor, thalamic neurons exhibit firing patterns correlated with tremor, predominantly in the cerebellar input receiving zone, the ventralis intermedius.

    “During essential tremor, thalamic neurons exhibit firing patterns correlated with tremor, predominantly in the cerebellar input receiving zone, the ventralis intermedius (Hua and Lenz, 2005).”

    From The nature of tremor circuits in parkinsonian and essential tremor (2014) · cites this paper as Hua and Lenz, 2005

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Authors
Hua, S. E., & Lenz, F. A.
Affiliations
Johns Hopkins University (US)
Venue
Journal of Neurophysiology
Published
2005-01
Volume
93
Issue
1
Pages
117-127
ISSN
  • 0022-3077 (ISSN-L)
  • 1522-1598
OpenAlex
W2170921456
Cited by
134
References
70
Citations by year
2026: 6 · 2025: 7 · 2024: 8 · 2023: 6 · 2022: 10 · 2021: 4 · 2020: 5 · 2019: 4 · 2018: 9 · 2017: 4 · 2016: 8 · 2015: 10 · 2014: 6 · 2013: 7 · 2012: 4
FWCI
2.24
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurophysiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke (NS-38493, NS 40059, R01NS040059)
Topics
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
  • Social Sciences › Psychology › Clinical Psychology › Obsessive-Compulsive Spectrum Disorders
Keywords
essential tremor, postural tremor, ventral intermediate nucleus, thalamotomy, proprioceptive feedback, single-unit recording
MeSH terms
Action Potentials, Adult, Aged, Brain Mapping, Cerebellum, Electromyography, Female, Humans, Functional Laterality, Male, Middle Aged, Motor Activity, Neurons, Periodicity, Posture, Spectrum Analysis, Stereotaxic Techniques, Thalamus, Time Factors, Volition, Muscle, Skeletal, Essential Tremor

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