TABLE 3.

Quantitation of rotation angle of variant OHCs in the base of the cochlea (Table 1; 1 group; n = 8)

Animals	+90 degrees (positive)	−90 degrees (negative)	180 degrees	Ratio
60	93	57	28	3:2:1
52	101	62	30	3:2:1
34	59	14	7	4:2:1
1	54	30	8	7:4:1
34	56	32	6	9:5:1
38	61	57	13	5:4:1
15	101	37	7	14:5:1
7	41	29	8	5:3:1
21	30	16	12	5:3:2
23	47	18	5	9:3:1
17	10	10	2	5:5:1
Average value	60.28%	34.18%	11.45%	5:3:1

Tables 3 summarizes different rotated OHC number in the base of cochlea, and the average ratio was 5:3:1. According to degrees of stereociliary bundle variations, they could be classified as follows: severe, variant OHC ≥50%; moderate, ≥20%; light, individual OHC variations. In this study, 3 guinea pigs (6 ears) had severe variation, 2 (3 ears) were moderate, and 3 (5 ears) were light. OHC indicates outer hair cell.