Studying auditory discrimination in children and the role it plays in acquiring language skills is of great importance. Also the relationship between articulation disorder and the ability to discriminate the speech sound is an important topic for speech and language researchers.Previous event- related potentials (ERPs) studies have suggested a possible participation of the visual cortex of the blind subjects were asked to discriminate 100 couple Farsi words (auditory discrimination tack) while they were listening them from recorded tape.The results showed that the blinds were able to discriminate heard material better than sighted subjects. (Prro.05)According to this study in blind subjects conical are as normally reserved for vision may be activated by other sensory modalities.This is in accordance with previous studies. We suggest that auditory cortex expands in blind humans.

Background and Aim: Phonological processing skills include the abilities to restore, retrieve and use memorized phonological codes. The purpose of this research is to compare and evaluate phonological processing skills in 6-7 year old blind and sighted Persian speakers in Tehran, Iran.
Methods: This research is an analysis-comparison study. The subjects were 24 blind and 24 sighted children. The evaluation test of reading and writing disorders in primary school students, linguistic and cognitive abilities test, and the naming subtest of the aphasia evaluation test were used as research tools.
Results: Sighted children were found to perform better on phoneme recognition of nonwords and flower naming subtests and the difference was significant (p<0.001). Blind children performed better in words and sentence memory the difference was significant (p<0.001). There were no significant differences in other subtests.
Conclusion: Blind children&aposs better performance in memory tasks is due to the fact that they have powerful auditory memory.