Table 1.
Group mean (SD) latency and amplitudes of N1 and P2 peaks in response to 750 and 1000 Hz stimuli amplitude modulated at 10 Hz in experiment #1.
| Onset | IPD | Offset | |||||
|---|---|---|---|---|---|---|---|
| Latency (ms) | Amp (μV) | Latency (ms) | Amp (μV) | Latency (ms) | Amp (μV) | ||
| N1 PEAKS | |||||||
| 750 Hz | YNH | 116.4 (10.3) | −2.79 (2.0) | 1,232.1 (25.4) | −4.6 (2.6) | 2,303.5 (19.2) | −2.74 (2.0) |
| MNH | 116.9 (11.2) | −2.67 (1.7) | 1,244.6 (42.2) | −2.73 (1.7) | 2,303.0 (10.0) | −2.35 (1.4) | |
| 1000 Hz | YNH | 116.9 (14.1) | −2.50 (1.6) | 1,257.4 (37.3) | −3.15 (2.0) | 2,317.3 (46.9) | −2.29 (2.5) |
| MNH | 120.1 (11.4) | −2.27 (1.3) | 1,238.4 (35.5) | −1.96 (1.3) | 2,310.4 (24.3) | −1.17 (1.0) | |
| P2 PEAKS | |||||||
| 750 Hz | YNH | 192.2 (28.3) | 2.91 (1.3) | 1,308.9 (25.5) | −0.4 (1.6) | 2,404.7 (25.5) | 1.26 (1.3) |
| MNH | 197.7 (17.6) | 3.34 (1.4) | 1,338.1 (58) | 0.57 (1.0) | 2,428.3 (34.1) | 1.67 (0.89) | |
| 1000 Hz | YNH | 182.2 (15.3) | 2.14 (1.6) | 1,340.8 (58.6) | −0.50 (1.9) | 2,397.7 (29.1) | 1.06 (1.2) |
| MNH | 197.0 (23.8) | 3.38 (1.2) | 1,326.1 (55.8) | 0.76 (0.6) | 2,412.9 (20.5) | 1.69 (0.8) | |
Subject groups included young normal-hearing (YNH) and middle-age normal-hearing (MNH) 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.