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Kenneth M. Heilman, MD; Leslie Rothi, PhD; Debra Campanella, MS; Sloane Wolfson, MD

Arch Neurol. 1979;36(3):129-133.

Abstract
• It has been proposed that the comprehension of written language requires transcoding from the visual (grapheme) to the auditory (phoneme). It has also been proposed that visual word images can be comprehended without grapheme-phoneme transcoding. We describe three aphasic patients with left hemisphere impairment who had poor speech comprehension but could comprehend written language. One of these patients had a subsequent right hemisphere lesion and lost his ability to read. We propose that the right hemisphere in some individuals may be capable of extracting semantic information from iconic images (ideogram) without phonological processing.

Author Affiliations
From the Department of Neurology, College of Medicine, University of Florida (Dr Heilman), and the Veterans Administration Hospital (Drs Heilman and Rothi and Ms Campanella), Gainesville, and the Department of Neurology, Downstate Medical Center, Brooklyn, NY (Dr Wolfson).

Footnotes
Accepted for publication April 14, 1978.

Reprint requests to Department of Neurology, Box J-236, College of Medicine, University of Florida, Gainesville, FL 32610 (Dr Heilman).

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