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Reduction in subthalamic 8–35 Hz oscillatory activity correlates with clinical improvement in Parkinson's disease

Kühn, Andrea A., Kupsch, Andreas, Schneider, Gerd‐Helge, Brown, Peter·2006·European Journal of Neuroscience

Abstract

Strong synchronization of neuronal activity occurs in the 8–35 Hz band in the subthalamic nucleus (STN) of patients with Parkinson's disease (PD) and is evident as oscillatory local field potential (LFP) activity. To test whether such synchronization may contribute to bradykinesia and rigidity, we sought correlations between the suppression of synchronization at 8–35 Hz in STN and the reduction in Parkinsonism with levodopa. LFPs were recorded on and off medication from STN deep‐brain stimulation electrodes in nine PD patients. LFP power was calculated over the frequencies of the most prominent spectral peak within the 8–35 Hz frequency band on each of 17 sides (off medication), and over the frequencies of any peak in the 60–90 Hz band, if present (seven sides, on medication). Levodopa‐induced reduction of LFP power over these two frequency ranges was then correlated with improvement in motor impairment as assessed by the Unified Parkinson's Disease Rating Scale (UPDRS). The reduction in peak activity in the 8–35 Hz band with levodopa positively correlated with the improvement in the contralateral hemibody motor UPDRS score with levodopa (r = 0.811, P < 0.001) as well as with hemibody subscores of akinesia‐rigidity (r = 0.835, P < 0.001), but not tremor. A trend for negative correlations was found between peak 60–90 Hz LFP power and UPDRS hemibody score, suggesting that positive correlations were relatively frequency‐specific. Our results support a link between levodopa‐induced improvements in bradykinesia and rigidity and reductions in population synchrony at frequencies < 35 Hz in the region of the STN in patients with PD.

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Metadata

Authors
Kühn, A. A., Kupsch, A., Schneider, G., & Brown, P.
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2006-04
Volume
23
Issue
7
Pages
1956-1960
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W1498617277
Cited by
892
References
22
FWCI
13.80
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Reduction in subthalamic 8–35 Hz oscillatory activity correlates with clinical improvement in Parkinson's disease. https://app.cochat.ai/papers/10.1111/j.1460-9568.2006.04717.x
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Kühn, A. A., Kupsch, A., Schneider, G., & Brown, P. (2006). Reduction in subthalamic 8–35 Hz oscillatory activity correlates with clinical improvement in Parkinson's disease. European Journal of Neuroscience. https://doi.org/10.1111/j.1460-9568.2006.04717.x

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.