The Alexias 1969

  • Norman Geschwind
Part of the Boston Studies in the Philosophy of Science book series (BSPS, volume 16)


Alexia may be defined as an incapacity in the comprehension of written or printed words produced by a cerebral lesion. In current usage alexia refers only to acquired defects in contrast to dyslexia, a term designating an innate or constitutional inability to learn to read (Critchley, 1967). This distinction has not gained universal acceptance but has become increasingly popular (Leischner, 1957) and will be employed in the following discussion. The classical term ‘word blindness’ is presently used by only a few investigators.


Corpus Callosum Developmental Dyslexia Angular Gyrus Left Visual Field Homonymous Hemianopia 
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Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1974

Authors and Affiliations

  • Norman Geschwind
    • 1
  1. 1.Harvard Medical SchoolUSA

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