AN INVESTIGATION OF THE CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN

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FEIZABADI MONIREH; AGHAZADEH AMIRI MOHAMMAD; GHASEMI BORUMAND MOHAMMAD; SHIRI AMINLOO MARZIEH; TABATABAEE SEYED MEHDI

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Journal: SCIENTIFIC JOURNAL OF REHABILITATION MEDICINE Year:2015 | Volume:4 | Issue:2 Page(s): 118-126

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Title

AN INVESTIGATION OF THE CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN

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Keywords

DYSLEXIAQ1

CONTRAST SENSITIVITYQ2

FREIBURG ACUITY AND CONTRAST TEST (FRACT)Q2

MAGNOCELLULAR PATHWAYQ2

Abstract

Background and Aim: A review of the neurophysiological studies suggests that DYSLEXIA is the result of a deficit in the magnocellular part of the visual system. Most of the evidence cited in favour of this hypothesis is from CONTRAST SENSITIVITY studies. This study tested the hypothesis that visual processing deficits may be present in DYSLEXIA by comparing the visual CONTRAST SENSITIVITY of dyslexic children and controls.Materials and Methods: contrast thresholds were recorded in 67 children, 26 dyslexic (mean age of 8.76±1.33) and 41 control group (mean age 9.07±1.40). CONTRAST SENSITIVITY was measured using Freiburg acuity and contrast test (FrACT) version 3.7 at frequency 5cpd in both eyes. The results were then analyzed using SPSS-18.Results: mean contrast threshold of Right eyes in dyslexic group (0.62±0.12) and control group (0.68 ± 0.15), mean contrast threshold of Left eyes in dyslexic group (0.61±0.16) and control group (0.67±0.15) were measured. There were no statistically significant differences between two groups in ight eyes (pvalue: 0.279) and in left eyes (pvalue: 0.124).Conclusion: The present study do not support the hypothesis of magnocellular visual pathway deficit in DYSLEXIA. Our result show that there isn’t relationship between reading ability and CONTRAST SENSITIVITY in dyslexic children.

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APA: Copy

FEIZABADI, MONIREH, AGHAZADEH AMIRI, MOHAMMAD, GHASEMI BORUMAND, MOHAMMAD, SHIRI AMINLOO, MARZIEH, & TABATABAEE, SEYED MEHDI. (2015). AN INVESTIGATION OF THE CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN. SCIENTIFIC JOURNAL OF REHABILITATION MEDICINE, 4(2), 118-126. SID. https://sid.ir/paper/239612/en

Vancouver: Copy

FEIZABADI MONIREH, AGHAZADEH AMIRI MOHAMMAD, GHASEMI BORUMAND MOHAMMAD, SHIRI AMINLOO MARZIEH, TABATABAEE SEYED MEHDI. AN INVESTIGATION OF THE CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN. SCIENTIFIC JOURNAL OF REHABILITATION MEDICINE[Internet]. 2015;4(2):118-126. Available from: https://sid.ir/paper/239612/en

IEEE: Copy

MONIREH FEIZABADI, MOHAMMAD AGHAZADEH AMIRI, MOHAMMAD GHASEMI BORUMAND, MARZIEH SHIRI AMINLOO, and SEYED MEHDI TABATABAEE, “AN INVESTIGATION OF THE CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN,” SCIENTIFIC JOURNAL OF REHABILITATION MEDICINE, vol. 4, no. 2, pp. 118–126, 2015, [Online]. Available: https://sid.ir/paper/239612/en

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