Inventors:
Cameron C. McIntyre - Cleveland OH, US
Christopher R. Butson - Shaker Heights OH, US
John D. Hall - Mayfield Heights OH, US
Jaimie M. Henderson - Stanford CA, US
Assignee:
The Cleveland Clinic Foundation - Cleveland OH
International Classification:
A61B 5/05
US Classification:
600407, 600408, 600410, 600416, 607 2, 607 45, 607115, 607148, 607544
Abstract:
This document discusses, among other things, brain stimulation models, systems, devices, and methods, such as for deep brain stimulation (DBS) or other electrical stimulation. A model computes a volume of influence region for a simulated electrical stimulation using certain stimulation parameters, such as amplitude, pulsewidth, frequency, pulse morphology, electrode contact selection or location, return path electrode selection, pulse polarity, etc. The model uses a non-uniform tissue conductivity. This accurately represents brain tissue, which has highly directionally conductive neuron pathways yielding a non-homogeneous and anisotropic tissue medium. In one example, the non-uniform tissue conductivity is obtained from diffusion tensor imaging (DTI) data. In one example, a second difference of an electric potential distribution is used to define a volume of activation (VOA) or similar volume of influence. In another example, a neuron or axon model is used to calculate the volume of influence without computing the second difference of the electric potential distribution.