ABSTRACT
Professor Henry Hecaen’s leadership in the study of acalculia was well-known. He felt this topic needed revival and was generous enough to invite the author to join him for such an endeavor in Paris in 1979. Elizabeth K. Warrington patient was a 61-year-old, right-handed physician who presented with headache, expressive, receptive, and nominal speech deficits, a right homonymous hemianopsia, and acalculia. She correctly points out that the study of acalculia provides a unique test for theories of normal computational skills. The network approach provides an attractive model for reformulating research on acalculia. The most encouraging work on acalculia can be found historically in the work of Singer and A. A. Low, D. F. Benson, F. Grewel, T. Lindquist, and Hecaen et al. Although none of these provides a prototype for the investigation of acalculia, a brief critical review of these studies not only reveals some encouraging developments, but also serves to illustrate the issues that face future research in this area.
