Table 1.

Sine response steady-state sway velocity, amplitude, and phase

			Steady-State Amplitude			Steady-State Phase
Experiment	Hotelling T2-Test	No.	Off, °/s	On, °/s	ΔAmpl Bootstrap Hypothesis Test	Off, °/s	On, °/s	ΔPhase Bootstrap Hypothesis Test
1	EC SS s.r. on/off, GVS sine	P < 0.01	0.72P1	2.08P3	P < 0.01	−70P1	−120P3	P < 0.01
			0.59/0.89	1.72/2.51		−91/−51	−131/−108
2	EO SS s.r. on/off, GVS sine	P < 0.01	0.33P2	0.67P4	P < 0.01	−92P2	−144P4	P < 0.01
			0.24/0.41	0.52/0.85		−102/−84	−152/−135
3	EO SS s.r. on/off, VS sine	P < 0.01	0.28	0.76	P < 0.01	−19	−40	P < 0.05
			0.21/0.36	0.71/0.84		−37/−2	−53/−29
4	Lights on/off GVS sine	P < 0.05	0.42P1	0.24P2	P < 0.01	−79P1	−100P2	P < 0.05
			0.25/0.62	0.16/0.35		−105/-63	−124/−83
5	Lights on/off SS sine	P < 0.01	0.83	0.57	P < 0.01	4	13	n.s.
			0.64/1.04	0.42/0.75		0/19	3/29
6	Lights on/off GVS sine; SS s.r.	P < 0.01	2.20P3	0.67P4	P < 0.01	−118P3	−126P4	P < 0.05
			1.85/2.64	0.54/0.82		−132/−104	−138/−116

Values are mean and lower/upper limits of 95% confidence intervals from bootstrap analyses. P1–P4 indicate pairs with identical sensory condition and identical sinusoidal stimulus during the steady state. EC, eyes closed; EO, eyes open; SS s.r., support surface sway referencing; VS, visual scene; n.s., not significant.