IDEATIONAL APRAXIAS
\a͡ɪdˈi͡əʃənə͡l ɐpɹˈe͡ɪksi͡əz], \aɪdˈiəʃənəl ɐpɹˈeɪksiəz], \aɪ_d_ˈiə_ʃ_ə_n_əl ɐ_p_ɹ_ˈeɪ_k_s_iə_z]\
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A group of cognitive disorders characterized by the inability to perform previously learned skills that cannot be attributed to deficits of motor or sensory function. The two major subtypes of this condition are ideomotor (see APRAXIA, IDEOMOTOR) and ideational apraxia, which refers to loss of the ability to mentally formulate the processes involved with performing an action. For example, dressing apraxia may result from an inability to mentally formulate the act of placing clothes on the body. Apraxias are generally associated with lesions of the dominant PARIETAL LOBE and supramarginal gyrus. (From Adams et al., Principles of Neurology, 6th ed, pp56-7)
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