Skip to main content

High efficiency electrodes for deep brain stimulation.

Publication ,  Journal Article
Grill, WM; Wei, XF
Published in: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
December 1, 2009

Deep brain stimulators are powered with primary cell batteries and require surgical replacement when they are depleted. We sought to decrease power consumption, and thereby increase device lifetime by increasing neuronal stimulating efficiency with novel electrode designs. Our hypothesis was that high-perimeter electrodes that increase the variation of current density on their surface would generate larger activating functions for surrounding neurons, hence increasing stimulation efficiency. We implemented finite element models of cylindrical DBS electrodes with conventional circular perimeters, with serpentine perimeters, and with segmented contacts. The high-perimeter electrodes significantly increased the variation of current density on the electrode surface. We randomly positioned a population of 100 model axons around the electrodes and quantified neural activation with 100 micros cathodic stimuli. Input-output curves of percentage axons activated as a function of stimulation intensity indicated that the novel electrode geometries decreased power consumption by up to approximately 20% for axons parallel to the electrode and up to approximately 35% for axons perpendicular to the electrode. Reduced power consumption achieved with these designs will reduce the costs and risks associated with surgeries to replace depleted stimulators.

Duke Scholars

Published In

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference

ISSN

1557-170X

Publication Date

December 1, 2009

Start / End Page

3298 / 3301
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Grill, W. M., & Wei, X. F. (2009). High efficiency electrodes for deep brain stimulation. Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 3298–3301.
Grill, W. M., and X. F. Wei. “High efficiency electrodes for deep brain stimulation.Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, December 1, 2009, 3298–3301.
Grill WM, Wei XF. High efficiency electrodes for deep brain stimulation. Conference proceedings : . Annual International Conference of the IEEE Engineering in Medicine and Biology Society IEEE Engineering in Medicine and Biology Society Conference. 2009 Dec 1;3298–301.
Grill, W. M., and X. F. Wei. “High efficiency electrodes for deep brain stimulation.Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, Dec. 2009, pp. 3298–301.
Grill WM, Wei XF. High efficiency electrodes for deep brain stimulation. Conference proceedings : . Annual International Conference of the IEEE Engineering in Medicine and Biology Society IEEE Engineering in Medicine and Biology Society Conference. 2009 Dec 1;3298–3301.

Published In

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference

ISSN

1557-170X

Publication Date

December 1, 2009

Start / End Page

3298 / 3301