Deep Brain Stimulation - the challenges ahead


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Heida, T. and Holsheimer, J. and Geelen, J.A.G. and Veltink, P.H. (2005) Deep Brain Stimulation - the challenges ahead. In: 7th Meeting of the International Neuromodulation Society, 10-13 June 2005, Rome, Italy.

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Abstract:Parkinson’s disease (PD) is characterized by progressive loss of dopamine neurons in the pars compacta of the substantia nigra, which results in reduced activity in the thalamus. Clinically effective deep brain stimulation (DBS) has been achieved with electrode contacts in the anterior- dorsal subthalamic nucleus (STN), globus pallidus internus (GPi) and ventral intermediate nucleus (Vim). Stimulation parameters (monopolar cathodic; 1-5 V amplitude; 60-200 μs pulse duration; 120-180 Hz frequency) have been established primarily by trial and error. Although DBS has substantially improved the suppression of symptoms in PD-patients: an average reduction of akinesia (42%), rigidity (49%), tremor (27%), the mechanism of DBS is still unclear and side- effects may occur (e.g. ocular deviation, hypophonia, speech disturbances). There is a lack of quantitative understanding of the influence of high-frequency stimulation on the neuronal elements surrounding the electrode and the neuronal systems involved.
Item Type:Conference or Workshop Item
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Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/76577
Official URL:http://www.medimond.com/proceedings/detail.asp?id=20050610C
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