EVALUATION OF COLOR CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN

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MOHAMADI ALIREZA; JAFARZADEHPUR EBRAHIM

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Journal: Journal of Research in Rehabilitation Sciences Year:2014 | Volume:10 | Issue:1 Page(s): 193-202

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Information Journal Paper

Title

EVALUATION OF COLOR CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN

Author(s)

MOHAMADI ALIREZA | JAFARZADEHPUR EBRAHIM | Issue Writer Certificate

Keywords

DYSLEXIAQ2

VISIONQ2

CONTRAST SENSITIVITYQ2

COLOR OPPONENTQ2

Abstract

Introduction: Although there is a broad consensus about the importance of visual perception in reading, its role in the development of DYSLEXIA is highly debated. In order to understand the relationship between DYSLEXIA and disorders of visual perception, we have compared COLOR OPPONENT CONTRAST SENSITIVITY in dyslexic children with that in normal subjects.Materials and methods: 3 dyslexic and 3 normal children participated in this study. Their responses to stimuli, evoked by means of a pattern-generator software, were recorded in three spatial frequencies: 5, 8, and 18 cycles per degree (cpd). In each spatial frequency, the CONTRAST SENSITIVITY test was executed in two different levels (pattern detection and color discrimination) once in yellow background and once again in blue background.Results: In general, there was no significant difference between dyslexic and normal children in almost all the tests performed. Nevertheless, dyslexic subjects have shown reduced sensitivity in pattern detection both in yellow and blue backgrounds, yet they had better sensitivity than normal subjects in color discrimination.Conclusion: The results from comparison between dyslexic and control groups showed that color CONTRAST SENSITIVITY cannot be a proper differential indicator for DYSLEXIA. It suggests that DYSLEXIA does not affect all functions of the visual system. Individuals with DYSLEXIA, however, may have anomalous perceptual responses albeit normal basic and primary visual functions.

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APA: Copy

MOHAMADI, ALIREZA, & JAFARZADEHPUR, EBRAHIM. (2014). EVALUATION OF COLOR CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN. JOURNAL OF RESEARCH IN REHABILITATION SCIENCES, 10(1), 193-202. SID. https://sid.ir/paper/144089/en

Vancouver: Copy

MOHAMADI ALIREZA, JAFARZADEHPUR EBRAHIM. EVALUATION OF COLOR CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN. JOURNAL OF RESEARCH IN REHABILITATION SCIENCES[Internet]. 2014;10(1):193-202. Available from: https://sid.ir/paper/144089/en

IEEE: Copy

ALIREZA MOHAMADI, and EBRAHIM JAFARZADEHPUR, “EVALUATION OF COLOR CONTRAST SENSITIVITY IN DYSLEXIC CHILDREN,” JOURNAL OF RESEARCH IN REHABILITATION SCIENCES, vol. 10, no. 1, pp. 193–202, 2014, [Online]. Available: https://sid.ir/paper/144089/en

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