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Published on: June 25, 2019
Wider recognition in peripheral vision common to different subtypes of dyslexia
M L Lorusso1, A Facoetti, S Pesenti
1Scientific Institute E. Medea, 23842 Bosisio Parini (LC), Italy. mluisa@bp.lnf.it
Abstract:
Italian children (n = 125) were classified into dyslexics, poor readers and ordinary readers. The dyslexics were further classified into the Boder and Bakker subtypes. The children were tested with the form-resolving field (FRF), which measures central and peripheral visual recognition. Dyslexics show higher correct identification of letters in the periphery, supporting the notion of a different distribution of lateral masking. A numerical characterization of individual FRFs--C2R--reliably distinguishes between dyslexics and ordinary readers. The wider distribution of recognition, similar across the various subtypes of dyslexia, suggests a general characteristic of visual perception, and possibly a different visual-attentional mode.
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