Abstract
Background: A new 32-contacts deep brain stimulation (DBS) lead, capable of directionally steering stimulation, was tested intraoperatively.
Objective: The aim of this pilot study was to perform recordings from the multidirectional contacts and to investigate the effect of directional current steering on the local field potentials (LFPs).
Methods: In eight patients with Parkinson's disease, after standard microelectrode recording and clinical testing, the new lead was temporarily implanted. The 32-channel LFP recordings were measured simultaneously at different depths and directions before and after directional stimulation.
Results: The spatial distribution of LFPs power spectral densities across the contact array at baseline marked the borders of the subthalamic nucleus (STN) with a significant increase in beta power and with a mean accuracy of approximately 0.6 mm in four patients. The power in the 18.5-30 Hz frequency band varied across different directions in all patients. In the three cases that showed improvement of rigidity, this was higher when current was steered toward the direction with the highest LFP power in the beta band. Subthalamic LFPs in six patients showed a differential frequency-dependent suppression/enhancement of the oscillatory activity in the 10-45 Hz frequency band after four different 'steering' modes as compared to ring mode, suggesting a higher specificity.
Conclusions: Through a new 32-contact DBS lead it is possible to record simultaneous subthalamic LFPs at different depths and directions, providing confirmation of adequate lead placement and multidirectional spatial-temporal information potentially related to pathological subthalamic electrical activity and to the effect of stimulation. Although further research is needed, this may improve the efficiency of steering stimulation.
| Original language | English |
|---|---|
| Pages (from-to) | 730-741 |
| Number of pages | 12 |
| Journal | Brain stimulation |
| Volume | 8 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2015 |
| Externally published | Yes |
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Keywords
- Local field potentials
- New 32-contact DBS lead
- Spectral analysis
- Subthalamic nucleus
Cite this
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Directional recording of subthalamic spectral power densities in Parkinson's disease and the effect of steering deep brain stimulation. / Bour, L. J.; Lourens, M. A J; Verhagen, R.; de Bie, Rob M.A.; van den Munckhof, P; Schuurman, P. Richard; Contarino, M. Fiorella.
In: Brain stimulation, Vol. 8, No. 4, 2015, p. 730-741.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Directional recording of subthalamic spectral power densities in Parkinson's disease and the effect of steering deep brain stimulation
AU - Bour, L. J.
AU - Lourens, M. A J
AU - Verhagen, R.
AU - de Bie, Rob M.A.
AU - van den Munckhof, P
AU - Schuurman, P. Richard
AU - Contarino, M. Fiorella
PY - 2015
Y1 - 2015
N2 - Background: A new 32-contacts deep brain stimulation (DBS) lead, capable of directionally steering stimulation, was tested intraoperatively.Objective: The aim of this pilot study was to perform recordings from the multidirectional contacts and to investigate the effect of directional current steering on the local field potentials (LFPs).Methods: In eight patients with Parkinson's disease, after standard microelectrode recording and clinical testing, the new lead was temporarily implanted. The 32-channel LFP recordings were measured simultaneously at different depths and directions before and after directional stimulation.Results: The spatial distribution of LFPs power spectral densities across the contact array at baseline marked the borders of the subthalamic nucleus (STN) with a significant increase in beta power and with a mean accuracy of approximately 0.6 mm in four patients. The power in the 18.5-30 Hz frequency band varied across different directions in all patients. In the three cases that showed improvement of rigidity, this was higher when current was steered toward the direction with the highest LFP power in the beta band. Subthalamic LFPs in six patients showed a differential frequency-dependent suppression/enhancement of the oscillatory activity in the 10-45 Hz frequency band after four different 'steering' modes as compared to ring mode, suggesting a higher specificity.Conclusions: Through a new 32-contact DBS lead it is possible to record simultaneous subthalamic LFPs at different depths and directions, providing confirmation of adequate lead placement and multidirectional spatial-temporal information potentially related to pathological subthalamic electrical activity and to the effect of stimulation. Although further research is needed, this may improve the efficiency of steering stimulation.
AB - Background: A new 32-contacts deep brain stimulation (DBS) lead, capable of directionally steering stimulation, was tested intraoperatively.Objective: The aim of this pilot study was to perform recordings from the multidirectional contacts and to investigate the effect of directional current steering on the local field potentials (LFPs).Methods: In eight patients with Parkinson's disease, after standard microelectrode recording and clinical testing, the new lead was temporarily implanted. The 32-channel LFP recordings were measured simultaneously at different depths and directions before and after directional stimulation.Results: The spatial distribution of LFPs power spectral densities across the contact array at baseline marked the borders of the subthalamic nucleus (STN) with a significant increase in beta power and with a mean accuracy of approximately 0.6 mm in four patients. The power in the 18.5-30 Hz frequency band varied across different directions in all patients. In the three cases that showed improvement of rigidity, this was higher when current was steered toward the direction with the highest LFP power in the beta band. Subthalamic LFPs in six patients showed a differential frequency-dependent suppression/enhancement of the oscillatory activity in the 10-45 Hz frequency band after four different 'steering' modes as compared to ring mode, suggesting a higher specificity.Conclusions: Through a new 32-contact DBS lead it is possible to record simultaneous subthalamic LFPs at different depths and directions, providing confirmation of adequate lead placement and multidirectional spatial-temporal information potentially related to pathological subthalamic electrical activity and to the effect of stimulation. Although further research is needed, this may improve the efficiency of steering stimulation.
KW - Local field potentials
KW - New 32-contact DBS lead
KW - Spectral analysis
KW - Subthalamic nucleus
UR - http://www.scopus.com/inward/record.url?scp=84937525730&partnerID=8YFLogxK
U2 - 10.1016/j.brs.2015.02.002
DO - 10.1016/j.brs.2015.02.002
M3 - Article
VL - 8
SP - 730
EP - 741
JO - Brain stimulation
JF - Brain stimulation
SN - 1935-861X
IS - 4
ER -