Cognitive Load Assessment from EEG and Peripheral Biosignals for the Design of Visually Impaired Mobility Aids

Table 3

Linear model type III Wald -tests for ERD/ERS in the alpha-1 and alpha-2 bands, in the outdoor and indoor routes.

	df			df
	alpha-1, outdoor			alpha-1, indoor
Intercept (I)	1, 7.91	620.84	<0.001	1, 8.21	1074.04	<0.001
Vision Impair (VI)	1, 6.02	2.61	0.157	1, 7.58	2.62	0.147
Scene (S)	7, 846.56	2.83	0.006	4, 916.92	14.58	<0.001
	7, 846.36	5.15	0.001	4, 915.99	1.09	0.360
	alpha-2, outdoor			alpha-2, indoor
I	1, 7.97	1027.09	<0.001	1, 9.74	903.41	<0.001
VI	1, 6.05	7.38	0.035	1, 7.37	1.23	0.302
S	7, 833.86	5.39	<0.001	4, 888.74	20.92	<0.001
	7, 833.90	7.30	<0.001	4, 887.90	1.16	0.325