Abstract:
:We describe a patient, VSB, whose reading was impaired as a consequence of a left temporal-parietal lesion, whereas writing was relatively preserved. At variance with other pure alexic patients described in the literature, VSB claimed to have become unable to mentally visualise letters and words. Indeed, his performance on a series of tests tapping visual mental imagery for orthographic material was severely impaired. However, performance on the same tests was dramatically ameliorated by allowing VSB to trace each item with his finger. Visual mental imagery for non-orthographic items was comparatively spared. The pattern of dissociation shown by VSB between impaired visual mental imagery and relatively preserved motor-based knowledge for orthographic material lends support to the view that separate codes, respectively based on visual appearance and on motor engrams, may be used to access knowledge of the visual form of letters and words.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Bartolomeo P,Bachoud-Lévi AC,Chokron S,Degos JDdoi
10.1016/s0028-3932(01)00209-3subject
Has Abstractpub_date
2002-01-01 00:00:00pages
1363-71issue
8eissn
0028-3932issn
1873-3514pii
S0028393201002093journal_volume
40pub_type
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