Ideomotor apraxia, tested on verbal command and by imitation, was checked in 23 patients suffering from dementia of Alzheimer's type of different severity and in 17 age-matched controls. A significant deterioration of ideomotor praxis could be shown even in mild dementia. Correlations of ideomotor apraxia and aphasia, tested by the Token test were found to be significant.
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Travniczek-Marterer et al. (2009) studied this question.
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