. Author manuscript; available in PMC: 2014 Jul 1.

Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2013 Jul;2013:5674–5677. doi: 10.1109/EMBC.2013.6610838

TABLE I. Errors during Hold-Still Tasks.

Condition	Control	Std. (μm)	Pk-Pk (μm)	Power (μm²/Hz)
Open-Sky (A-Scan)	Unaided	80 (100.0 %)	357 (100.0 %)	6.631 (0.0 dB)
	Lowpass	45 (55.9 %)	258 (76.9 %)	0.366 (−12.6 dB)
	Scaling	46 (56.9 %)	229 (70.0 %)	0.668 (−10.0 dB)

In-vivo (A-Scan)	Unaided	101 (100.0 %)	577 (100.0 %)	3.681 (0.0 dB)
	Lowpass	55 (55.0 %)	337 (74.9 %)	0.698 (−13.1 dB)
	Scaling	85 (84.4 %)	326 (68.7 %)	0.278 (−11.4 dB)

Std. = Standard deviation and Pk-Pk. =Peak-to-peak deviation.