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. Author manuscript; available in PMC: 2008 Jan 15.
Published in final edited form as: Neuroimage. 2006 Nov 17;34(2):661–670. doi: 10.1016/j.neuroimage.2006.09.034

Figure 2.

Figure 2

Volume of tissue activated by deep brain stimulation. VTA shape and size differed between isotropic (A) and DTI-based (B) tissue mediums, resulting in differential activation of surrounding anatomical structures. Both models included a tissue encapsulation layer around the electrode shaft, and volumes generated under the two conditions were matched for electrode impedance. C) Average VTA volume +/− standard deviation for all electrode contacts as a function of stimulus voltage for stimulus pulse widths of 60 μsec and 120 μsec.