Table 4.
oVEMP, CEP, cVEMP and TA postural evoked responses across the differing head positions to Nz stimulation
| Head position | |||
|---|---|---|---|
| L max | Neutral | R max | |
| Extraocular electrodes (oVEMP) | |||
| Amplitude (μV) | |||
| EO1 (p15/n21) | 6.9 (3.8) | 7.9 (4.2) | 7.0 (3.9) |
| EO2 (p15/n21) | 8.0 (4.3) | 6.8 (4.4) | 6.7 (4.3) |
| Latency (ms) | |||
| EO1 (p15) | 15.1 (2.4) | 14.8 (2.6) | 14.9 (1.7) |
| EO1 (n21) | 21.4 (2.5) | 20.7 (2.2) | 20.3 (2.1) |
| EO2 (p15) | 14.9 (2.3) | 14.8 (2.6) | 14.6 (2.0) |
| EO2 (n21) | 21.3 (2.6) | 20.9 (2.2) | 20.1 (1.8) |
| Cerebellar electrodes (CEP) | |||
| Amplitude (μV) | |||
| PO9 (p14/n20) | 9.2 (9.4) | 11.8 (12.3) | 23.9 (15.6) |
| PO10 (p14/n20) | 22.4 (14.8) | 12.6 (9.7) | 8.7 (10.3) |
| Latency (ms) | |||
| PO9 (p14) | 14.1 (15.0) | 14.0 (2.2) | 14.3 (2.1) |
| PO9 (n20) | 19.9 (2.6) | 20.0 (2.3) | 19.6 (3.8) |
| PO10 (p14) | 13.2 (2.2) | 14.5 (2.5) | 14.3 (2.2) |
| PO10 (n20) | 20.7 (4.3) | 20.6 (2.8) | 20.5 (2.9) |
| SCM electrodes (cVEMP) | |||
| SCM activation (μV) | |||
| L SCM | 24.5 (10.2) | 29.3 (13.4) | 57.2 (27.8) |
| R SCM | 49.8 (21.9) | 29.0 (14.5) | 23.2 (8.7) |
| Raw amplitude (μV) | |||
| L SCM (p16) | 3.5 (5.1) | 7.9 (10.1) | 32.4 (28.3) |
| R SCM (p16) | 27.5 (28.0) | 6.4 (4.4) | 3.9 (7.3) |
| Corrected ratio | |||
| L SCM (p16) | 0.1 (0.1) | 0.2 (0.2) | 0.5 (0.2) |
| R SCM (p16) | 0.5 (0.4) | 0.2 (0.2) | 0.2 (0.3) |
| Latency (ms) | |||
| L SCM (p16) | 16.6 (1.0) | 15.4 (1.5) | 16.7 (1.4) |
| R SCM (p16) | 16.0 (2.8) | 15.7 (1.6) | 16.0 (2.2) |
| TA electrodes | |||
| Amplitude (% increase from baseline) | |||
| L TA (SL) | 21.8 (24.5) | 30.0 (33.4) | 16.9 (23.9) |
| R TA (SL) | 32.1 (33.8) | 27.9 (23.4) | 23.6 (26.7) |
| Latency (ms) | |||
| L TA (SL onset) | 53.0 (5.7) | 53.3 (3.6) | 52.1 (3.6) |
| L TA (SL end) | 82.7 (10.2) | 84.9 (10.4) | 83.3 (8.6) |
| R TA (SL onset) | 53.4 (6.3) | 53.1 (3.7) | 51.1 (3.8) |
| R TA (SL end) | 82.7 (9.8) | 84.3 (10.1) | 83.8 (8.4) |
Mean (SD), L, left; R, right