TABLE 5.

Number of participants who presented polyphasia regarding the level of stimulation (A) and the muscles examined (B) with indication of the Chi-square statistics results (p-value) for both situations.

(A) Level of stimulation	Polyphasia appearance
	Patients (n = 17 out of 20)	Relatives (n = 16 out of 23)	Controls (n = 14 out of 30)	Chi-square (P < 0.05)
Cortex	12 out of 17	10 out of 16	7 out of 14	0.495
Spinal cord	3 out of 17	1 out of 16	3 out of 14
Both levels	2 out of 17	5 out of 16	4 out of 14
(B) Muscles examined
ADM	11 out of 17	8 out of 16	5 out of 14	0.397
TA	5 out of 17	4 out of 16	6 out of 14
ADM and TA	1 out of 17	4 out of 16	3 out of 14