PSYC 311 Lecture Notes - Lecture 8: Dementia, Aphasia, Ideomotor Phenomenon
30 May 2016
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Document Summary
Constructional apraxia was described as a disconnection syndrome between visual and kinesthetic activity which prevents successful constructional activity. A pure case of constructional apraxia shows adequate visual form perception, preserved capacity to localize objects in visual space and no signs of ideo-motor apraxia. Kleist defined constructional apraxia as a disturbance in formative activities such as assembling, building and drawing in which the spatial form of the product proves to be unsuccessful without there being apraxia of single movements. Tasks: stick construction, block-arranging in the horizontal plane, block-building in the vertical plane, block designs, 3d block construction, drawing from a model, drawing on verbal request. These tasks may elicit evidence of lateral visual neglect particularly in patients with right hemispherical lesions. Although kleist specified that constructional apraxia was caused by left hemispherical damage, some patients with right hemispherical damage are also exhibiting this syndrome. That constructional apraxia is more frequently caused by right hemispherical disease is now firmly established.
