A fejlődési diszlexia újabb vizsgálatai az olvasási zavar mellett gyakran mutatnak ki teljesítménycsökkenést egyrészt a végrehajtó funkciókban (pl. munkamemória-feladatokban), másrészt vizuális tesztekben. Utóbbiak a vizuális feldolgozás ventrális útvonalának féltekei lateralizációt mutató, magasabbrendű, komplex információfeldolgozási zavarára utalnak, aminek az olvasási nehézség vélhetően csak a legszembetűnőbb megjelenési formája. Egy 2011-es metaanalízis alapján a bal fusiform arcfelismerő terület hipoaktivitása egyértelmű diszlexiában, a jobb oldali homológ terület – mely alapvető fontosságú az arcfelismerésben – érintettségével kapcsolatos vizsgálatok eredménye azonban vegyes. Ugyanígy, az arcfelismerés neurális modelljeiben a bal fusiform gyrusban található szóforma-felismerő terület szerepe tisztázatlan. Az összefoglalóban áttekintjük azokat az eredményeket, amelyek összefüggést mutatnak az arcfelismerés és az olvasás funkcionális agyi hálózatrendszere között, és bemutatjuk a fejlődési diszlexiában megjelenő vizuális deficitet.
In addition to the reading problems, results of recent studies regarding developmental dyslexia frequently show decreased performance in tasks that involve executive function, working memory, and normal visual processes. Aberration in visual domain suggests a complex, higher level neural deficit in perception which probably cannot relate exclusively to the left or the right hemisphere; and the dyslexia is presumably only the most salient feature of this visual malfunction. According to a meta-analysis published in 2011, the hypoactivity of the left fusiform gyrus is unequivocal in dyslexia, while the role of the right homologous area – which is the main center of the normal face recognition – is not clear. Similarly, the role of the left fusiform gyrus is not manifest in face recognition. In this review we will summarize the results of the studies that investigate the interconnection between neural networks of face recognition and reading.
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