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Numbers Written Counterclockwise in the Clock Drawing Test
Hui-Ju Kao, M.D.; Tung-Hua Chiang, M.D.
The Journal of Neuropsychiatry and Clinical Neurosciences 2014;26:E48-E49. doi:10.1176/appi.neuropsych.13030052
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Dept. of Neurology, Taichung Wizcare Hospital, Taichung City 404, Taiwan

Dept. of Neurology, Cheng-Ching Hospital, Taichung City 400, Taiwan

Correspondence: Hui-Ju Kao, M.D.; e-mail: kaohj.np99@gmail.com

Copyright © 2014 by the American Psychiatric Association


To the Editor: A recent review (Windows to the Brain: The Clock Drawing Task: Common Errors and Functional Neuroanatomy)1 described Rouleau’s qualitative system and the relationship between clock-drawing errors and brain networks. Frontoparietal and frontostriatal circuits are important for visuospatial and executive functions necessary for accurate clock-drawing. We highlight the error of counterclockwise numbers as spatial and/or planning deficits according to Rouleau’s system and argue that most of correctly sequenced numbers 1–12 written counterclockwise may suggest memory-system involvement.

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FIGURE 1. Relationships Among Number-Order Errors in the Clock Drawing Test


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