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Mean sound pressure level in dB SPL as a function of group and condition.
| Group | Habitual | Clear | Loud | Slow |
|---|---|---|---|---|
| Control | 73 (2.7) | 77 (4.5) | 83 (4.0) | 73 (4.0) |
| MS | 72 (3.0) | 75 (4.4) | 80 (3.6) | 72 (4.7) |
| PD | 72 (3.2) | 75 (4.0) | 79 (4.0) | 72 (4.6) |
Note. Standard deviations are in parentheses. SPL = sound pressure level; MS = multiple sclerosis; PD = Parkinson's disease.
