Table 1.

Four sensory organization test (SOT) combinations used in this study. Each combination only degraded one sensory condition (test effect) when going from baseline to test condition while the other was kept constant. When the force platform did not move it was called ‘fixed’ while when it sway-referenced it was called ‘sway-referenced floor’ (SRF). When opaque goggles were used to blindfold the subject, it was called ‘dark’ while when this did not occur it was called ‘light.’

Comparison	Baseline	Test	Accurate Sensory Feedback Modalities
A	Fixed-Dark (SOT II)	SRF-Dark (SOTV)	Baseline: Vestibular, Proprioception Test: Vestibular
B	Fixed-Light (SOTI)	SRF-Light (SOT IV)	Baseline: Vestibular, Proprioception, Vision Test: Vestibular, Vision
C	Fixed-Light (SOTI)	Fixed-Dark (SOT II)	Baseline: Vestibular, Proprioception, Vision Test: Vestibular, Proprioception
D	SRF-Light (SOT IV)	SRF-Dark (SOT V)	Baseline: Vestibular, Vision Test: Vestibular