Differential effect of dopa and subthalamic stimulation on vestibular activity in Parkinson's disease
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Differential effect of dopa and subthalamic stimulation on vestibular activity in Parkinson's disease. / Pötter-Nerger, Monika; Reich, Martin M; Colebatch, James G; Deuschl, G; Volkmann, Jens.
in: MOVEMENT DISORD, Jahrgang 27, Nr. 10, 01.09.2012, S. 1268-75.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Differential effect of dopa and subthalamic stimulation on vestibular activity in Parkinson's disease
AU - Pötter-Nerger, Monika
AU - Reich, Martin M
AU - Colebatch, James G
AU - Deuschl, G
AU - Volkmann, Jens
N1 - Copyright © 2012 Movement Disorder Society.
PY - 2012/9/1
Y1 - 2012/9/1
N2 - Postural disturbances in advanced Parkinson's disease are less responsive to therapy than other cardinal motor signs. The vestibulocollic reflex represents one brain-stem neuronal circuit involved in postural adjustments. The objective of this study was to investigate the vestibulocollic reflex in parkinsonian patients and the effects of subthalamic stimulation and dopa by recording vestibular-evoked myogenic potentials. After overnight withdrawal of medication, 20 patients with Parkinson's disease with (6 men, 4 women; mean age, 64.4 ± 2.2 years) or without (8 men, 2 women; mean age, 62.7 ± 3.9 years) implanted subthalamic electrodes in different treatment conditions were compared with 10 age-matched controls (5 men, 5 women; mean age, 59.6 ± 2.4 years). Vestibular-evoked myogenic potentials were recorded by electromyographic surface electrodes applied to both sternocleidomastoid muscles (band-pass filter, 8-1600 Hz; sampling rate, 5 kHz) and averaged in response to bilateral auditory tone bursts (120 dB SPL; sine waves, 7 ms; 1000 Hz) applied through earphones. Adjusted vestibular-evoked myogenic potential amplitudes were significantly smaller in parkinsonian patients than in controls, in particular in patients without surgery. Administration of dopa, but not subthalamic stimulation, significantly increased amplitudes. Onset latencies were similar for all groups and treatment conditions. Decreased vestibular-evoked myogenic potential amplitudes in parkinsonian patients suggest reduced vestibular nuclei excitability within the brain stem, which is modulated by dopa but not by subthalamic stimulation. This suggests different pathways for the action of both treatment modalities in Parkinson's disease and may explain clinical differences in terms of postural disturbances. © 2012 Movement Disorder Society.
AB - Postural disturbances in advanced Parkinson's disease are less responsive to therapy than other cardinal motor signs. The vestibulocollic reflex represents one brain-stem neuronal circuit involved in postural adjustments. The objective of this study was to investigate the vestibulocollic reflex in parkinsonian patients and the effects of subthalamic stimulation and dopa by recording vestibular-evoked myogenic potentials. After overnight withdrawal of medication, 20 patients with Parkinson's disease with (6 men, 4 women; mean age, 64.4 ± 2.2 years) or without (8 men, 2 women; mean age, 62.7 ± 3.9 years) implanted subthalamic electrodes in different treatment conditions were compared with 10 age-matched controls (5 men, 5 women; mean age, 59.6 ± 2.4 years). Vestibular-evoked myogenic potentials were recorded by electromyographic surface electrodes applied to both sternocleidomastoid muscles (band-pass filter, 8-1600 Hz; sampling rate, 5 kHz) and averaged in response to bilateral auditory tone bursts (120 dB SPL; sine waves, 7 ms; 1000 Hz) applied through earphones. Adjusted vestibular-evoked myogenic potential amplitudes were significantly smaller in parkinsonian patients than in controls, in particular in patients without surgery. Administration of dopa, but not subthalamic stimulation, significantly increased amplitudes. Onset latencies were similar for all groups and treatment conditions. Decreased vestibular-evoked myogenic potential amplitudes in parkinsonian patients suggest reduced vestibular nuclei excitability within the brain stem, which is modulated by dopa but not by subthalamic stimulation. This suggests different pathways for the action of both treatment modalities in Parkinson's disease and may explain clinical differences in terms of postural disturbances. © 2012 Movement Disorder Society.
KW - Acoustic Stimulation
KW - Aged
KW - Antiparkinson Agents
KW - Cerebral Cortex
KW - Deep Brain Stimulation
KW - Electromyography
KW - Evoked Potentials, Auditory
KW - Female
KW - Humans
KW - Levodopa
KW - Male
KW - Middle Aged
KW - Parkinson Disease
KW - Reaction Time
KW - Subthalamic Nucleus
KW - Vestibular Diseases
KW - Vestibule, Labyrinth
KW - Journal Article
KW - Research Support, Non-U.S. Gov't
U2 - 10.1002/mds.25061
DO - 10.1002/mds.25061
M3 - SCORING: Journal article
C2 - 22693156
VL - 27
SP - 1268
EP - 1275
JO - MOVEMENT DISORD
JF - MOVEMENT DISORD
SN - 0885-3185
IS - 10
ER -