Table 3.
Group mean (SD) latency and amplitudes of N1 and P2 peaks in response to 750 and 1,000 Hz stimuli amplitude modulated at 10 Hz in experiment #2.
| Onset | IPD | Offset | |||||
|---|---|---|---|---|---|---|---|
| Latency (ms) | Amp (μV) | Latency (ms) | Amp (μV) | Latency (ms) | Amp (μV) | ||
| N1 PEAKS | |||||||
| 750 Hz | MHI | 104.6 (11.3) | −2.9 (1.4) | 1,249.1 (44.6) | −2.7 (1.8) | 2,309.2 (17.8) | −2.2 (2.0) |
| OHI | 107.2 (9.4) | −2.0 (1.6) | 1,253.8 (45.8) | −1.1 (1.4) | 2,315.6 (19.9) | −0.7 (1.3) | |
| 1,000 Hz | MHI | 105.4 (11.1) | −2.9 (1.4) | 1,262.2 (49.9) | −2.1 (1.5) | 2,312.4 (22.3) | −2.0 (1.6) |
| OHI | 108.1 (13.6) | −2.2 (2.0) | 1,305.1 (90.3) | −1.0 (1.0) | 2,323.8 (31.4) | −1.2 (1.2) | |
| P2 PEAKS | |||||||
| 750 Hz | MHI | 187.8 (33.6) | 2.7 (2.4) | 1,323.7 (36.4) | 0.3 (2.1) | 2,407.6 (25.4) | 1.1 (1.6) |
| OHI | 213.2 (38.1) | 2.1 (1.2) | 1,308.5 (35.8) | 0.3 (1.0) | 2,419.9 (31.9) | 1.7 (1.3) | |
| 1,000 Hz | MHI | 184.9 (32.7) | 2.5 (2.1) | 1,318.4 (51.3) | 0.2 (1.2) | 2,408.5 (29.5) | 1.2 (1.5) |
| OHI | 196.6 (39.8) | 1.1 (1.7) | 1,369.7 (78.1) | 0.5 (0.9) | 2,419.9 (26.1) | 1.0 (0.9) | |
Subject groups included middle-age hearing-impaired (MHI) and older hearing-impaired (OHI) participants. Data are shown for responses to stimulus onset, interaural phase shift (IPD) occurring 1,100 ms post-stimulus onset, and stimulus offset occurring at 2,200 ms.