The Influence of Age and Skull Conductivity on Surface and Subdermal Bipolar EEG Leads

Table 2

Results of the visually evoked bipolar measurement for the surface and subdermal leads of the Visible Human Man dataset. All parameters are calculated from the brain region containing both the gray and white matters.

Leads	Conductivity Ratio	Maximum Sensitivity (A/cm^3)	HSV (mm^3)	ROISR
Surface	5∶1	0.420	4999	2.43
Surface	8∶1	0.405	5239	2.31
Surface	15∶1	0.387	4002	2.09
Surface	30∶1	0.336	2446	1.81
Subdermal	5∶1	0.85	706	3.17
Subdermal	8∶1	0.83	586	3.00
Subdermal	15∶1	0.72	516	2.72
Subdermal	30∶1	0.54	610	2.39