. Author manuscript; available in PMC: 2013 Feb 1.

Published in final edited form as: J Comput Neurosci. 2011 Jun 11;32(1):73–100. doi: 10.1007/s10827-011-0341-0

Table 3.

Single electrode models

Model	d_core (µm)	ϕ_tip/2 (deg)	d_tip (µm)	h_tip (µm)	A_tip (µm²)	ϕ_shaft/2 (deg)	d_shaft (µm)	h_shaft (µm)	r_100µV (µm)	r_50µV (µm)	r_25µV (µm)
1	24	3.5	2	10	43	5	36	200	92±2	132±3	186±4
2	12	3.5	1.6	10	30	5	36	200	86±2	123 ±3	175±3
3	12	3.5	0.8	3	4	5	36	200	97±0	139±0	201 ±0
4	12	3.5	1	5	8.5	5	65	90	106±2	150±3	217±4
5	7	19	7	10	116	19	65	90	89±4	126±5	179±5
6	12	19	12	16.7	322	19	65	90	85±5	122±5	176±6
7	6	90	6	0	26	19	65	90	97±2	136±1	192±2

M1-M3: sharp tips and shafts; M4-M7: wider shafts and variously sharp tips. The varied geometry parameters included the core diameter (d_core), exposed tip diameter at its top (d_tip), exposed tip cone height (h_tip), cone angle of the shaft (ϕ_tip), exposed tip area (A_tip), shaft diameter (d_shaft), shaft cone height (h_shaft), the cone angle of the shaft (ϕ_shaft). Lead field radii are defined at 3 criteria, as in Table 2. Entries are mean ± the half-difference of the radii measured along the horizontal (x-dir) and vertical (z-dir)