Gadi Geiger

Focusing on dyslexia

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Research on Dyslexia:

For the past several years, Jerry Lettvin, other collegues and I have been working on a new approach to dyslexia. We suggest that dyslexics have a different learned patterns of perceptual masking rather than higher level cognitive defect.

In A View on Dyslexia, we describe, briefly, a perceptual non-reading measure which reliably distinguishes between dyslexic persons and ordinary readers. More importantly, we describe a regimen of practice with which dyslexics learn a new perceptual strategy for reading. By now six studies on dyslexics children and adults demonstrate the regimen's efficiency.

A View on Dyslexia postscript version
A View on Dyslexia pdf version
Gad Geiger and Jerome Lettvin
CBCL Paper #148/AI Memo #1608, Massachusetts Institute of Technology, Cambridge, MA, June 1997.

Selected publications:

Developmental Dyslexia: a Different Perceptual Strategy and How to Learn a New Strategy for Reading pdf version
Gad Geiger and Jerome Y. Lettvin
Saggi CD and D Vol.26, No. 1, 73-89, 2000.

Wider recognition in peripheral vision common to different subtypes of dyslexia pdf version
M.L. Lorusso, A. Facoetti, S. Pesenti, C. Cattaneo, M. Molteni, G. Geiger
Vision Research, vol. 44, 2413-2424, 2004.

Towards the Prevention of Dyslexia pdf version
Geiger, G. and D. Amara. , CBCL Paper #256/AI Memo #2005-029

How Dyslexics See and Learn to Read Well
Gad Geiger and Jerome Lettvin
In, Reading and Dyslexia: Visual and attentional processes, edited by John Everatt, Routledge:London, New York, 1999.

Dyslexic Children Learn a New Visual Strategy for Reading: A Controlled Experiment
Gad Geiger, Jerome Y. Lettvin and Manfred Fahle
Vision Research, Vol. 34, No. 9, 1223-1233, 1994.

Task-determined Strategies of Visual Process pdf version
Gad Geiger, Jerome Y. Lettvin and Olga Zegarra-Moran
Cognitive Brain Research 1, 39-52, 1992.

Peripheral Vision in Persons with Dyslexia
Gad Geiger and Jerome Y. Lettvin, M.D.
New England Journal of Medicine 316:1238-1243, 1987.

Lectures:

A lecture I gave in the International Design Conference in Aspen June, 9, 2001. The figures for the lecture are in:
Perception as Practiced

Posters:

A poster I presented in the Vision ScienceS conference in Sarasota, FL May, 2001.
Cross-Modal Perceptual Learning as Demonstrated in Dyslexics

My address:

CBCL, MIT
Room 46-5155, (43 Vassar St.)
Cambridge, MA 02139
phone: (617) 253 9646
gadi@ai.mit.edu