Table 1.

Demographic and clinical characteristics of participants

	Spasmodic dysphonia patients	Healthy controls	p value
Demographic characteristics
Speech production RAC PET
Number of participants	18	18
Age	54.6 ± 11.0	54.6 ± 9.2	0.99
Gender	12 F/6 M	12 F/6 M	1.00
Handedness	Right	Right
Spoken language	English	English
Other language experience	None	None
Sequential finger tapping RAC PET
Number of participants	15	15
Age	54.6 ± 9.2	54.4 ± 9.5	0.97
Gender	10 F/5 M	9 F/6 M	0.72
Clinical characteristics
Other forms of dystonia	None	None
Number of symptomatic patients	18	N/A
Number of patients on botulinum toxin treatment	17	N/A
Spasmodic dysphonia duration	13.3 ± 7.3	N/A
Spasmodic dysphonia severity (voice breaks per sentence)	2.4 ± 1.8	N/A
Number of finger taps	4245 ± 861	4140 ± 966	0.37
Accuracy of finger taps (%)	84.4 ± 11.9	86.4 ± 13.7	0.34
Initiation of the tapping sequence (reaction time value for mean linear slope coefficient)	0.2 ± 0.3	−0.2 ± 0.3	0.006

F, Female; M, male.