PMC

Examples of “best” (A) and “worst” (B) impaired Clock Drawing Test performances from the sample of 30 participants with impaired clock drawing tests.

Examples of Clock Drawing.
^* Note: The patient in example A1 was asked to set the time to 3 o’clock; in the other 3 examples, the patients were asked to set the time to “20 ‘til 4.”

Lesion-deficit relationships for the Clock Drawing Test. The Maps show regions of the brain, in red, where significant effects of lesion-deficit relationship were found at a threshold of P < 0.05 (uncorrected). Three series of maps are shown: (a) Maps for impairments irrespective of error type; (b) Maps for impairments in spatial organization and number placement; and (c) Maps for impairments in time setting. For all three Maps, left and right lateral hemispheres are shown on the left side of the Figure, and coronal slices at the levels indicated by 1–6 (on the left and right hemispheres in (a)) are shown on the right side of the Figure (the left hemisphere is on the right in the coronal slices).

Effective Coverage Maps (ECMs) for the Clock Drawing Test. The ECMs show regions of the brain, in red, where significant effects of lesion-deficit relationships could be found at a threshold of P < 0.05 (uncorrected), if lesion-deficit relationships were maximal, given the observed lesion coverage and proportion of subjects with impairments in the sample. Three series of maps are shown: (a) ECMs for overall impairment on the CDT (irrespective of error type); (b) ECMs for impairments in spatial organization and number placement; and (c) ECMs for impairments in time setting. For all three ECMs, left and right lateral hemispheres are shown on the left side of the Figure, and coronal slices at the levels indicated by 1–6 (on the left and right hemispheres in (a)) are shown on the right side of the Figure (the left hemisphere is on the right in the coronal slices).