Table 1.
Subject characteristics and means and standard deviations for arcuate fasciculus (AF) measurements.
| All Subjects (n=36) | Females (n=12) | Males (n=24) | ||||
|---|---|---|---|---|---|---|
| Age (mean ± SD) | 31.3±9.7 | 34.4±10.7 | 29.7±10.7 | |||
| Handedness (right/left)* | 34/2 | 12/0 | 22/2 | |||
| Years of education† | 15.0±2.6 | 14.8±2.4 | 15.0±2.8 | |||
| Total Brain Volume (cc) | 1415.5±155.8 | 1265.7±80.7 | 1487.4±129.8 | |||
| White Matter Volume (cc) | 540.4±76.6 | 484.7±44.0 | 567.1±75.0 | |||
| Gray Matter Volume (cc) | 703.8±78.8 | 619.2±44.8 | 744.5±55.6 | |||
| Verbal Fluency total score* | 11.38±3.14 | 10.45±3.24 | 11.83±3.07 | |||
| Hemisphere | Left | Right | Left | Right | Left | Right |
| Arcuate FA | .470±.029 | .470±.038 | .470±.037 | 474±.052 | .470±.026 | 469±.043 |
| Arcuate Tract Volume (cc) | 4.48±2.82 | 4.03±2.86 | 3.39±2.80 | 2.84±2.36 | 5.01±2.74 | 4.63±2.94 |
| Arcuate Axial Diff (×104 mm2/s) | 10.79±.35 | 10.27±.41 | 10.78±.40 | 10.32±.37 | 10.79±.33 | 10.24±.44 |
| Arcuate Radial Diff (×104 mm2/s) | 5.46±.20 | 5.21±.42 | 5.48±.19 | 5.22±.18 | 5.45±.21 | 5.21±.50 |
| Overall Cortical Thickness (mm) | 4.61±.14 | 4.58±.15 | 4.62±.14 | 4.62±.15 | 4.55±.13 | 4.64±.15 |
| Middle Temporal Gyrus (mm) | 5.18±.61 | 5.17±.38 | 5.18±.28 | 5.19±.74 | 5.10±.43 | 5.22±.35 |
| Superior Temporal Gyrus (mm) | 5.37±.53 | 5.35±.27 | 5.39±.27 | 5.43±.59 | 5.33±.31 | 5.48±.30 |
| Supramarginal Gyrus (mm) | 4.85±.84 | 4.90±.56 | 4.84±.36 | 4.78±.84 | 4.75±.47 | 4.79±.42 |
| Precentral Gyrus (mm) | 4.53±.39 | 4.50±.22 | 4.53±.20 | 4.50±.48 | 4.42±.23 | 4.52±.26 |
| Postcentral Gyrus (mm) | 4.62±.69 | 4.59±.40 | 4.64±.33 | 4.47±.72 | 4.41±.39 | 4.50±.37 |
| Inferior Frontal Gyrus (mm) | 4.42±.17 | 4.45±.18 | 4.40±.17 | 4.59±.17 | 4.58±.17 | 4.59±.17 |
| •Superior Occipital Gyrus (mm) | 3.97±.27 | 3.97±.27 | 3.97±.27 | 3.86±.24 | 3.88±.25 | 3.85±.25 |
†
Education data was unavailable for 1 male subject.
*
Verbal fluency scores averaged across letters (range: 5–19), which are similar to reported norms, e.g., [Loonstra et al., 2001], were unavailable for 1 male and 1 female subject. Means represent raw values (uncorrected for sex or age).