Table 1.

Summary of demographics, fluency scores, and diffusion tensor imaging metrics. Cognitive impairment index ranges 0 and 1 (higher is worse) and calculated based on the Minimal Assessment of Cognitive Function in Multiple Sclerosis (MACFIMS) as described somewhere else [32].

	Mean ± Standard Deviation
Gender	26 Females, 9 Males
Age	41.85 ±10.49
Education	14.68±2.37
Disease Duration	13.43±9.08
Expanded Disability Status Scale (EDSS)	3.54±2.02
Cognitive Impairment Index	0.46±0.25
Phonemic Verbal Fluency (F,A,S letters) Raw Scores	35.80±13.85
Phonemic Verbal Fluency (F,A,S letters) Percentiles	29.60±28.62
Semantic Verbal Fluency (Animals) Raw Scores	17.28±4.69
Semantic Verbal Fluency (Animals) Percentiles	22.71±20.78
T1w lesions (in mL)	4.25±3.96
T2w-FLAIR lesions (in mL)	15.93±15.20
Left Frontal Aslant Tract Fractional Anisotropy	0.36±0.02
Right Frontal Aslant Tract Fractional Anisotropy	0.36±0.02
Left Arcuate Fasciculus Fractional Anisotropy	0.37±0.03
Right Arcuate Fasciculus Fractional Anisotropy	0.37±0.03