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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Clin Neurophysiol. 2008 Jul 15;119(9):2148–2158. doi: 10.1016/j.clinph.2008.02.025

Figure 5.

Figure 5

a) Effective radius of activation as a function of stimulation voltage predicted using the mean threshold-distance constant k = 0.22 V/mm2. Dashed lines represent ±1 standard deviation around the mean (solid line). b) Model-estimated threshold amplitudes for contact 0, calculated as Vth*0 = v + ky′0 2 (where v = 0.1 V and k = 0.22 V/mm2) as a function of the actual threshold voltage required to elicit a side effect with contact 0. Black circles represent 4 thalami with θ > 20°, and white circles represent 2 thalami with θ < 20°. Solid line is unity slope.