Errors on the Trail Making Test Are Associated with Right Hemispheric Frontal Lobe Damage in Stroke Patients

Figure 2

Anatomical results obtained from the lesion subtraction analysis on the number of TMT-B total errors. (a) Overlay lesion plots for those patients who committed two or more total errors (Mdn = 1) on the TMT-B (). The number of overlapping lesions is illustrated by color, from violet () to red (). (b) Overlay lesion plots for those patients who committed less than two total errors on the TMT-B (). The number of overlapping lesions is illustrated by color, from violet () to red (). (c) Overlay plots of the subtracted superimposed lesions of the patients with two or more total errors on the TMT-B minus the patients with less than two total errors on the TMT-B. Colors code increasing frequencies from dark-red (difference from 1% to 20%) to white-yellow (difference from 81% to 100%), indicating regions damaged more frequently in patients who committed relatively many total errors on the TMT-B. The colors from dark-blue (difference from −1 to −20%) to light-green (difference from −81 to −100%) indicate regions damaged more frequently in patients who committed relatively few total errors on the TMT-B.

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