Research Article

Cognitive Intraindividual Variability and White Matter Integrity in Aging

Figure 4

Using the JHU atlas, diffusivity measures were computed for both groups (young and old adults). The upper row represents the regions where the FA values were higher in the younger adults (forceps major and minor, bilateral inferior fronto-occipital fasciculus, and bilateral inferior longitudinal fasciculus). Mean values across areas: .478 (SD = .015) versus .448 (.012). The lower row represents the regions where the MD values were higher in the older population (bilateral anterior thalamic radiation, forceps minor, left IFO, and bilateral superior longitudinal fasciculus). Mean values across regions: .00075 (.00002) versus .00084 (.00006).
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