Amplitude and midpoint of interaural time difference in the groups
| Control (n=22) | Left brain damage (n=15) | Right brain damage (n=29) | |
|---|---|---|---|
| Amplitude (μs) | 559 (304) | 750 (607) | 1085 (558)2-150 |
| Out of normal range2-152 | 1 | 1 | 13 |
| Midpoint (μs) | 32 (97) | 30 (14)† | –235 (392)2-150 † |
| Out of normal range2-153 | 0 | 1 | 9 |
Data of amplitude and midpoint are presented as mean (SD). Amplitude is an index of ability to detect sound image shifts from the centre. Midpoint is an index of deviation of the interaural time difference range perceived as the centre.
↵2-150 and †p<0.05 compared with the control and left brain damage groups, respectively; one way ANOVA followed by Scheffe’s test.
↵2-152 Number of patients with an amplitude out of the normal range (<1167 μs).
↵2-153 number of patients with a midpoint out of the normal range (from –162 to 227 μs).