Saccadic Alterations in Severe Developmental Dyslexia
It is not sure if persons with dyslexia have ocular motor deficits in addition to their deficits in rapid visual information processing. A 15-year-old boy afflicted by severe dyslexia was submitted to saccadic eye movement recording. Neurological and ophthalmic examinations were normal apart from th...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Case Reports in Neurological Medicine |
| Online Access: | http://dx.doi.org/10.1155/2013/406861 |
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| author | Stefano Pensiero Agostino Accardo Paola Michieletto Paolo Brambilla |
| author_facet | Stefano Pensiero Agostino Accardo Paola Michieletto Paolo Brambilla |
| author_sort | Stefano Pensiero |
| collection | DOAJ |
| description | It is not sure if persons with dyslexia have ocular motor deficits in addition to their deficits in rapid visual information processing. A 15-year-old boy afflicted by severe dyslexia was submitted to saccadic eye movement recording. Neurological and ophthalmic examinations were normal apart from the presence of an esophoria for near and slightly longer latencies of pattern visual evoked potentials. Subclinical saccadic alterations were present, which could be at the basis of the reading pathology: (1) low velocities (and larger durations) of the adducting saccades of the left eye with undershooting and long-lasting postsaccadic onward drift, typical of the internuclear ophthalmoplegia; (2) saccades interrupted in mid-flight and fixation instability, which are present in cases of brainstem premotor disturbances. |
| format | Article |
| id | doaj-art-063f63e9ef14417a9db54dad6a209528 |
| institution | Kabale University |
| issn | 2090-6668 2090-6676 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Case Reports in Neurological Medicine |
| spelling | doaj-art-063f63e9ef14417a9db54dad6a2095282025-02-03T01:27:13ZengWileyCase Reports in Neurological Medicine2090-66682090-66762013-01-01201310.1155/2013/406861406861Saccadic Alterations in Severe Developmental DyslexiaStefano Pensiero0Agostino Accardo1Paola Michieletto2Paolo Brambilla3Department of Ophthalmology, Institute for Maternal and Child Health, IRCCS “Burlo Garofolo”, Via dell’Istria 65/1, 34137 Trieste, ItalyDepartment of Electronics (DEEI), University of Trieste, 34127 Trieste, ItalyScientific Institute IRCCS “Eugenio Medea”, 33100 Udine, ItalyScientific Institute IRCCS “Eugenio Medea”, 33100 Udine, ItalyIt is not sure if persons with dyslexia have ocular motor deficits in addition to their deficits in rapid visual information processing. A 15-year-old boy afflicted by severe dyslexia was submitted to saccadic eye movement recording. Neurological and ophthalmic examinations were normal apart from the presence of an esophoria for near and slightly longer latencies of pattern visual evoked potentials. Subclinical saccadic alterations were present, which could be at the basis of the reading pathology: (1) low velocities (and larger durations) of the adducting saccades of the left eye with undershooting and long-lasting postsaccadic onward drift, typical of the internuclear ophthalmoplegia; (2) saccades interrupted in mid-flight and fixation instability, which are present in cases of brainstem premotor disturbances.http://dx.doi.org/10.1155/2013/406861 |
| spellingShingle | Stefano Pensiero Agostino Accardo Paola Michieletto Paolo Brambilla Saccadic Alterations in Severe Developmental Dyslexia Case Reports in Neurological Medicine |
| title | Saccadic Alterations in Severe Developmental Dyslexia |
| title_full | Saccadic Alterations in Severe Developmental Dyslexia |
| title_fullStr | Saccadic Alterations in Severe Developmental Dyslexia |
| title_full_unstemmed | Saccadic Alterations in Severe Developmental Dyslexia |
| title_short | Saccadic Alterations in Severe Developmental Dyslexia |
| title_sort | saccadic alterations in severe developmental dyslexia |
| url | http://dx.doi.org/10.1155/2013/406861 |
| work_keys_str_mv | AT stefanopensiero saccadicalterationsinseveredevelopmentaldyslexia AT agostinoaccardo saccadicalterationsinseveredevelopmentaldyslexia AT paolamichieletto saccadicalterationsinseveredevelopmentaldyslexia AT paolobrambilla saccadicalterationsinseveredevelopmentaldyslexia |