Relationships between Eye Movements during Sentence Reading Comprehension, Word Spelling and Reading, and DTI and fmri Connectivity In Students with and without Dysgraphia or Dyslexia
| Autor: | Katie Askren, Scott F. Beers, Virginia W. Berninger, William E. Nagy, Kevin Yagle, Zoe Mestre, Robert D. Abbott, Peter Boord, Todd L. Richards |
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| Rok vydání: | 2017 |
| Předmět: |
behavioral disciplines and activities
050105 experimental psychology Article typical reading and writing dysgraphia 03 medical and health sciences Fluency sentence reading comprehension 0302 clinical medicine Dysgraphia dyslexia medicine 0501 psychology and cognitive sciences eye movement fixations Temporal cortex 05 social sciences Dyslexia Eye movement Fixation (psychology) medicine.disease Spelling eye movement saccades 3. Good health brain bases of eye movements Learning disability medicine.symptom Psychology 030217 neurology & neurosurgery psychological phenomena and processes Cognitive psychology |
| Zdroj: | Journal of systems and integrative neuroscience |
| ISSN: | 2059-9781 |
| Popis: | While eye movements were recorded and brains scanned, 29 children with and without specific learning disabilities (SLDs) decided if sentences they read (half with only correctly spelled words and half with homonym foils) were meaningful. Significant main effects were found for diagnostic groups (non-SLD control, dysgraphia control, and dyslexia) in total fixation (dwell) time, total number of fixations, and total regressions in during saccades; the dyslexia group had longer and more fixations and made more regressions in during saccades than either control group. The dyslexia group also differed from both control groups in (a) fractional anisotropy in left optic radiation and (b) silent word reading fluency on a task in which surrounding letters can be distracting, consistent with Rayner's selective attention dyslexia model. Different profiles for non-SLD control, dysgraphia, and dyslexia groups were identified in correlations between total fixation time, total number of fixations, regressions in during saccades, magnitude of gray matter connectivity during the fMRI sentence reading comprehension from left occipital temporal cortex seed with right BA44 and from left inferior frontal gyrus with right inferior frontoccipital fasciculus, and normed word-specific spelling and silent word reading fluency measures. The dysgraphia group was more likely than the non-SLD control or dyslexia groups to show negative correlations between eye movement outcomes and sentences containing incorrect homonym foils. Findings are discussed in reference to a systems approach in future sentence reading comprehension research that integrates eye movement, brain, and literacy measures. |
| Databáze: | OpenAIRE |
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