Literaturnachweis - Detailanzeige
| Autor/inn/en | Ptak, Radek; Di Pietro, Marie; Schnider, Armin |
|---|---|
| Titel | The Neural Correlates of Object-Centered Processing in Reading: A Lesion Study of Neglect Dyslexia |
| Quelle | In: Neuropsychologia, 50 (2012) 6, S.1142-1150 (9 Seiten)
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0028-3932 |
| DOI | 10.1016/j.neuropsychologia.2011.09.036 |
| Schlagwörter | Beginning Reading; Dyslexia; Brain Hemisphere Functions; Correlation; Neurological Impairments; Error Patterns; Symptoms (Individual Disorders); Predictor Variables; Attention Control; Patients; Spatial Ability; Reading Processes |
| Abstract | Neglect dyslexia--a peripheral reading disorder generally associated with left spatial neglect--is characterized by omissions or substitutions of the initial letters of words. Several observations suggest that neglect dyslexia errors are independent of viewer-centered coordinates; the disorder is therefore thought to reflect impairment at the level of object-centered representations. This hypothesis is indirectly supported by lesion studies connecting object-centered neglect errors with damage to posterior cortical regions lying in the ventral visual stream. Here, we performed a lesion-symptom mapping study of 40 patients with spatial neglect asked to read words presented at different positions relative to a viewer-centered coordinate frame. We found that the frequency of object-centered reading errors was constant across horizontal positions, whereas the frequency of entirely neglected words (reflecting a page-centered deficit) linearly increased from right to left. Damage to the intraparietal sulcus and the angular and middle temporal gyri was the best predictor of object-centered errors. We discuss these findings with reference to a role of the posterior parietal lobe in adapting the size of the attentional focus and biasing object representations elaborated in the ventral visual stream. (Contains 4 tables and 5 figures.) (As Provided). |
| Anmerkungen | Elsevier. 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126; Tel: 407-345-4020; Fax: 407-363-1354; e-mail: usjcs@elsevier.com; Web site: http://www.elsevier.com |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2017/4/10 |
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