Table II.

Mean vibrotactile parameters by group

Frequency one‐back task
	Freq	SEM	Min.	Max.	Amp.	SEM	Min.	Max.
Group: EB
F1	21.8	1.3	18	30	172.7	7.0	133	198
F2	33.2	1.5	26	40	124.4	4.3	106	148
F3	50		50	50	84		84	84
F4	74	1.3	70	80	59	1.1	54	62
F5	93.7	1.1	90	100	38.4	1.4	30	43
Group: NS
F1	22.4	0.8	20	26	167.7	4.6	148	181
F2	33.8	0.9	30	38	122.5	2.3	111	133
F3	50		50	50	84		84	84
F4	70	0.6	68	73	61.8	0.4	60	64
F5	90.7	1.0	86	96	42.2	1.3	35	48
Ampitude‐change task
	Group: EB				Group: NS
	Increase(μm)	SEM	Min.	Max.	Increase (μm)	SEM	Min.	Max.
F1	307.9	11.2	237	344	291.6	5.0	266	310
F2	241.3	12.1	184	290	217.5	7.7	180	252
F3	142	7.5	128	200	129.7	1.5	122	135
F4	102.2	5.4	85	143	96.1	1.3	89	101
F5	68.7	2.5	62	85	66.6	2.4	52	80
	Decrease	SE	Min.	Max.	Decrease	SE	Min.	Max.
F1	95.1	3.1	77	107	92.8	3.7	83	122
F2	72.4	3.5	58	90	70.2	2.3	60	80
F3	38.6	1.6	32	50	40	1.1	38	50
F4	27.9	1.2	23	35	30.7	0.5	29	34
F5	18.7	0.6	15	21	20.3	0.4	19	23