Percentage of correct responses (SD) for categorical ratings in the emotional prosody recognition task for early PD patients in the ON and OFF DRT conditions, advanced PD patients, and HC.

Abbreviations: HC: healthy controls; PD: Parkinson's disease; SD: standard deviation; DRT: dopamine replacement therapy.

The statistical values (Stat. val.), degrees of freedom (df) and p values between the three independent groups are reported (single-factor ANOVA).

Comparisons (ANOVA) were performed between the early PD ON, advanced PD and HC groups.

* Significant (p<0.05).