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. Author manuscript; available in PMC: 2010 Mar 1.

Published in final edited form as: J Clin Neuromuscul Dis. 2009 Mar;10(3):90–96. doi: 10.1097/CND.0b013e3181934423

X of tibialis anterior as measured using far-electrode arrays in 10 subjects with ALS is plotted against a cohort of normal subjects (a). In 5 of the cases, X of the ALS patients was smaller than the lower limit of normal. X of tibialis anterior as measured using near-electrode arrays showed reductions in 8 of 10 ALS patients (b). The dashed line represents the mean, while the solid line represents the lower limit of normal. Closed circles are patients with ALS. Open circles are normal controls.

X of tibialis anterior as measured using far-electrode arrays in 10 subjects with ALS is plotted against a cohort of normal subjects (a). In 5 of the cases, X of the ALS patients was smaller than the lower limit of normal. X of tibialis anterior as measured using near-electrode arrays showed reductions in 8 of 10 ALS patients (b). The dashed line represents the mean, while the solid line represents the lower limit of normal. Closed circles are patients with ALS. Open circles are normal controls.