Neuropsychological analysis of a typewriting disturbance following cerebral damage.
Following a left CVA, a skilled professional typist sustained a disturbance of typing disproportionate to her handwriting disturbance. Typing errors were predominantly of the sequencing type, with spatial errors much less frequent, suggesting that the impairment was based on a relatively early (premotor) stage of processing. Depriving the subject of visual feedback during handwriting greatly increased her error rate. Similarly, interfering with auditory feedback during speech substantially reduced her self-correction of speech errors. These findings suggested that impaired ability to utilize somesthetic information--probably caused by the subject's parietal lobe lesion--may have been the basis of the typing disorder.
D001037:Aphasia / Q000523:psychology*; D002544:Cerebral Infarction / Q000150:complications*; D005246:Feedback; D005260:Female; D007839:Functional Laterality; D006236:Handwriting; D006801:Humans; D008875:Middle Aged; D009483:Neuropsychological Tests; D011578:Psycholinguistics; D011596:Psychomotor Disorders / Q000523:psychology*; D013060:Speech; D013067:Speech Perception; D014796:Visual Perception