Comparison of Dichotic Consonant- Vowel test results between right handed and left handed adults with normal hearing
Introduction: According to the previous studies, left hemisphere of the brain has specialized for language processing. The relation between handedness and the brain hemispheres is very obvious. In more than 95% of right- handed people and 70% of left- handed people the left hemisphere is responsible...
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| Format: | Article |
| Language: | fas |
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Vesnu Publications
2013-12-01
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| Series: | مجله پژوهش در علوم توانبخشی |
| Online Access: | http://jrrs.mui.ac.ir/index.php/jrrs/article/view/1319 |
| _version_ | 1818961541563678720 |
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| author | Mitra Janghorban Leila JalilvandKarimi Mohamad Hosein Nilforoush Seyed Mehdi Tabatabaei |
| author_facet | Mitra Janghorban Leila JalilvandKarimi Mohamad Hosein Nilforoush Seyed Mehdi Tabatabaei |
| author_sort | Mitra Janghorban |
| collection | DOAJ |
| description | Introduction: According to the previous studies, left hemisphere of the brain has specialized for language processing. The relation between handedness and the brain hemispheres is very obvious. In more than 95% of right- handed people and 70% of left- handed people the left hemisphere is responsible for language processing generally. A few studies have investigated the relationship between handedness and the brain hemispheres by means of Dichotic Consonant- Vowel ( DCV ) test. The aim of the present study is to investigate the results of DCV test in right- handed and left- handed adults with normal hearing.
Methods: 40 right- handed and 40 left- handed adults aged between 18- 40 years whose handedness was verified by Edinburgh scale participated in this study. This research was performed at rehabilitation faculty, ShahidBeheshti University of medical sciences. DCV test results were analyzed t- test parametric and Mann- Whitney non- parametric statistical tests.
Results: Right- handed group scores were more than left- handed group scores which was meaningful statistically ( p≤ 0.01 ). The percentage of double corrected consonant- vowels in right- handed group was more than this in left- handed group.
Conclusion: The results of the present study indicate that right- handed group function is better than left- handed group function in the DCV test. Right ear advantage is obvious not only in right- handed group but also in left- handed one which shows left hemisphere advantage in processing the linguistic information.
Keywords: Right- handedness, left- handedness, dichotic consonant- vowel test |
| first_indexed | 2024-12-20T12:15:04Z |
| format | Article |
| id | doaj.art-8b7edde935fc4c2999c2c0201d59b2ee |
| institution | Directory Open Access Journal |
| issn | 1735-7519 2008-2606 |
| language | fas |
| last_indexed | 2024-12-20T12:15:04Z |
| publishDate | 2013-12-01 |
| publisher | Vesnu Publications |
| record_format | Article |
| series | مجله پژوهش در علوم توانبخشی |
| spelling | doaj.art-8b7edde935fc4c2999c2c0201d59b2ee2022-12-21T19:41:09ZfasVesnu Publicationsمجله پژوهش در علوم توانبخشی1735-75192008-26062013-12-019583384010.22122/jrrs.v9i5.1319502Comparison of Dichotic Consonant- Vowel test results between right handed and left handed adults with normal hearingMitra Janghorban0Leila JalilvandKarimi1Mohamad Hosein Nilforoush2Seyed Mehdi Tabatabaei3Department of Audiology, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, IranLecturer, Academic Member, Department of Audiology, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, IranAcademic Member, Department of Audiology, School of Rehabilitation, Isfahan University of Medical Sciences, Isfahan, IranLecturer, Department of basic sciences, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, IranIntroduction: According to the previous studies, left hemisphere of the brain has specialized for language processing. The relation between handedness and the brain hemispheres is very obvious. In more than 95% of right- handed people and 70% of left- handed people the left hemisphere is responsible for language processing generally. A few studies have investigated the relationship between handedness and the brain hemispheres by means of Dichotic Consonant- Vowel ( DCV ) test. The aim of the present study is to investigate the results of DCV test in right- handed and left- handed adults with normal hearing. Methods: 40 right- handed and 40 left- handed adults aged between 18- 40 years whose handedness was verified by Edinburgh scale participated in this study. This research was performed at rehabilitation faculty, ShahidBeheshti University of medical sciences. DCV test results were analyzed t- test parametric and Mann- Whitney non- parametric statistical tests. Results: Right- handed group scores were more than left- handed group scores which was meaningful statistically ( p≤ 0.01 ). The percentage of double corrected consonant- vowels in right- handed group was more than this in left- handed group. Conclusion: The results of the present study indicate that right- handed group function is better than left- handed group function in the DCV test. Right ear advantage is obvious not only in right- handed group but also in left- handed one which shows left hemisphere advantage in processing the linguistic information. Keywords: Right- handedness, left- handedness, dichotic consonant- vowel testhttp://jrrs.mui.ac.ir/index.php/jrrs/article/view/1319 |
| spellingShingle | Mitra Janghorban Leila JalilvandKarimi Mohamad Hosein Nilforoush Seyed Mehdi Tabatabaei Comparison of Dichotic Consonant- Vowel test results between right handed and left handed adults with normal hearing مجله پژوهش در علوم توانبخشی |
| title | Comparison of Dichotic Consonant- Vowel test results between right handed and left handed adults with normal hearing |
| title_full | Comparison of Dichotic Consonant- Vowel test results between right handed and left handed adults with normal hearing |
| title_fullStr | Comparison of Dichotic Consonant- Vowel test results between right handed and left handed adults with normal hearing |
| title_full_unstemmed | Comparison of Dichotic Consonant- Vowel test results between right handed and left handed adults with normal hearing |
| title_short | Comparison of Dichotic Consonant- Vowel test results between right handed and left handed adults with normal hearing |
| title_sort | comparison of dichotic consonant vowel test results between right handed and left handed adults with normal hearing |
| url | http://jrrs.mui.ac.ir/index.php/jrrs/article/view/1319 |
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