دوره 6، شماره 2: 1389

<ArticleSet>
<Article>
<Journal>
<PublisherName></PublisherName>
<JournalTitle>Journal of Research in Rehabilitation Sciences</JournalTitle>
<Issn>1735-7519</Issn>
<Volume>6</Volume>
<Issue>2</Issue>
<PubDate>
<Year>2011</Year>
<Month>02</Month>
<Day>20</Day>
</PubDate>
</Journal>
<VernacularTitle>P100 component of VEP in dyslexics</VernacularTitle>
<FirstPage>135</FirstPage>
<LastPage>135</LastPage>
<Language>FA</Language>
<AuthorList>
<Author>
<FirstName>بیژن</FirstName>
<LastName>شفیعی</LastName>
<Affiliation>کارشناس ارشد گفتاردرمانی، دانشکده توان بخشی،گروه گفتار درمانی دانشگاه علوم پزشکی اصفهان. jrrs@rehab.mui.ac.ir</Affiliation>
</Author>
<Author>
<FirstName>محمد</FirstName>
<LastName>سعادت نیا</LastName>
</Author>
<Author>
<FirstName>مصطفی</FirstName>
<LastName>دایمی</LastName>
</Author>
<Author>
<FirstName>Bijan</FirstName>
<LastName>Shafie</LastName>
</Author>
<Author>
<FirstName>Mohammad</FirstName>
<LastName>Saadatnia</LastName>
</Author>
<Author>
<FirstName>Mostafa</FirstName>
<LastName>Daemi</LastName>
</Author>
</AuthorList>
<History>
<PubDate>
<Year>2011</Year>
<Month>02</Month>
<Day>20</Day>
</PubDate>
</History>
<Abstract>Abstract Introduction: Dyslexia can be defined as a reading and writing disorder without any intellectual, educational or emotional problems. Despite of its detrimental effects on various aspects of dyslexics&rsquo; individual and social living, no well-defined etiology or biologic diagnosis has been found to date. The purpose of this study was to compare amplitudes and latencies of p100 component of VEP results between dyslexics and non-dyslexic through various visual stimuli to evaluate its diagnostic value. &nbsp; Materials and Methods It was a cross-sectional analytic study. 20 dyslexics and 20 non-dyslexic school-aged children were randomly recruited. All of them were first tested by VEP and then the amplitudes and latencies of p100 component obtained through low and high contrast visual stimulation were recorded and analyzed. &nbsp; Results Reduction of stimulation contrast resulted in a significant increasing of p100 latency in both groups. Although reduced stimulation contrast resulted in decreased and increased amplitudes in non-dyslexics and dyslexics respectively, none of these changes were significant when two groups were compared. &nbsp; Conclusion Resulted changes in p100 amplitude and latency by reduced stimulation contras through VEP recording is not a suitable indicator for dyslexia diagnosis. This research did not support mangocellular deficit hypothesis in dyslexia. Key words: dyslexia, VEP, magnocellular</Abstract>
</Article>
</ArticleSet>

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