Deficit to stimulus-centered, letter shape representations in a case of "unilateral neglect".
A brain-damaged subject is described whose pattern of performance in various reading tasks can be explained by proposing damage at a level of the word recognition process in which a representation with stimulus-centered, rather than retinal- or word-centered, coordinates is processed. Analysis of her reading performance as a function of topographical arrangement of letters, position of errors in the letter string, and the effects of letter spacing and of adding a prefix or suffix provide evidence not only for the existence of this level of representation (the letter-shape map in a model proposed by Caramazza and Hillis [3]), but also for specific assumptions about its functioning and structure.
Hillis
A E
AE
School of Medicine, Johns Hopkins University, Baltimore, MD 21218.
Caramazza
A
A
D001288:Attention / Q000502:physiology*; D001925:Brain Damage, Chronic / Q000503:physiopathology* / Q000523:psychology; D001931:Brain Mapping; D004292:Dominance, Cerebral / Q000502:physiology*; D004411:Dyslexia, Acquired / Q000503:physiopathology* / Q000523:psychology; D005260:Female; D006801:Humans; D011939:Mental Recall / Q000502:physiology; D008875:Middle Aged; D009483:Neuropsychological Tests; D009778:Occipital Lobe / Q000503:physiopathology; D010296:Parietal Lobe / Q000503:physiopathology; D010364:Pattern Recognition, Visual / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology; D011932:Reading; D012160:Retina / Q000503:physiopathology; D014706:Verbal Learning / Q000502:physiology