Abstract: Behavioral studies found that deficits in phonological processing plays a major role in developmental dyslexia. Behavioral and neurophysiological studies in recent years also found that developmental dyslexia is related to deficits in basic auditory and visual processing as well. As a non-invasive technique with high time resolution, event-related potentials (ERP) measured on dyslexics confirmed the discoveries of behavioral studies about phonological processing and information integrating. However, results from auditory ERP studies were less consistent, and visual ERP studies on development dyslexia are still lacking, suggesting that more systematic studies are being wanted.

Key words: development dyslexia, ERP, phonological deficit hypothesis, Oddball paradigm