Abstract
The aim of the present study was to investigate the reading mechanisms in adults (27 subjects; mean age, 19.5 ± 0.8 [SD] years) with different levels of written text comprehension using fMRI. The main objective was to analyze the basic brain mechanisms of verbal stimuli perception with and without semantic component during reading discrimination tasks. The BOLD signal changes during WORD and PSEUDOWORD reading comparing to GAZE FIXATION state were estimated using both analysis of whole brain activation and ROIs (structures connected with the brain system providing reading) in two groups of subjects, “good” and “poor” readers. It was revealed that activations were higher in “poor” readers in lingual gyrus, SMG, STG compared to “good” readers during PSEUDOWORD reading. It was supposed, that the strategies of words and pseudowords recognition differed in two groups of readers: “good” readers identified words or pseudowords already at the stage of visual analysis of “word” structure and demonstrated attempts to decode pseudowords (i.e., language lexical zones were not activated); “poor” readers, apparently, tried to read pseudowords using the same strategy as for the words reading referring to the lexicon, and after failure identified pseudowords as meaningless concepts. In that case, activations of both lexical “language” zones and visual word form area (VWFA) were observed.
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Original Russian Text © N.V. Shemyakina, V.A. Novikov, Zh.V. Nagornova, E.I. Galperina, A.V. Pozdnjakov, A.N. Kornev, 2018, published in Fiziologiya Cheloveka, 2018, Vol. 44, No. 2, pp. 41–51.
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Shemyakina, N.V., Novikov, V.A., Nagornova, Z.V. et al. Mechanisms of Reading in Persons with Different Levels of Written Text Comprehension. Hum Physiol 44, 152–160 (2018). https://doi.org/10.1134/S0362119718020159
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DOI: https://doi.org/10.1134/S0362119718020159