Lexical effects in left neglect dyslexia: A study in Italian patients.

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Title: Lexical effects in left neglect dyslexia: A study in Italian patients.
Authors: Arduino, Lisa S., Burani, Cristina, Vallar, Giuseppe
Source: Cognitive Neuropsychology. Jul2002, Vol. 19 Issue 5, p421-444. 24p.
Subjects: Dyslexia, Reading, Unilateral neglect
Geographic Terms: Italy
Abstract: This study investigated whether and to what extent the reading performance of six Italian right-brain-damaged patients with left neglect dyslexia was affected by lexical variables. The lexicality of responses (either words or nonwords) and the distribution of substitution vs. omission neglect errors were measured. Patients were given the following tasks: (1) reading aloud monomorphemic words of different frequencies and nonwords with different degrees of similarity to real words (Experiment 1); (2) reading aloud morphologically complex (suffixed) derived words and morphologically complex (suffixed) nonwords (Experiment 2). Patients could be distinguished in terms of their sensitivity to the lexical status of the target. Four patients exhibited lexicality effects in their reading performance, while two patients did not. The dissociation is discussed in terms of the interaction between defective visuospatial analysis, which characterises neglect, and higher-order lexical knowledge. The suggestion is made that lexical effects in neglect dyslexia reflect a relative preservation of visuospatial processing of the left side of the letter string, its absence a more severe neglect disorder. This interpretation of the occurrence of lexical effects in left neglect dyslexia in terms of severity of the spatial disorder is specific to the domain of reading, however, and does not extend to other manifestations of unilateral spatial neglect. Finally, the relationship between error type (omissions vs. substitutions) and the absence vs. presence of lexical effects is considered. [ABSTRACT FROM AUTHOR]
Copyright of Cognitive Neuropsychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Lexical effects in left neglect dyslexia: A study in Italian patients.
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  Data: <searchLink fieldCode="AR" term="%22Arduino%2C+Lisa+S%2E%22">Arduino, Lisa S.</searchLink><br /><searchLink fieldCode="AR" term="%22Burani%2C+Cristina%22">Burani, Cristina</searchLink><br /><searchLink fieldCode="AR" term="%22Vallar%2C+Giuseppe%22">Vallar, Giuseppe</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Cognitive+Neuropsychology%22">Cognitive Neuropsychology</searchLink>. Jul2002, Vol. 19 Issue 5, p421-444. 24p.
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  Data: <searchLink fieldCode="DE" term="%22Dyslexia%22">Dyslexia</searchLink><br /><searchLink fieldCode="DE" term="%22Reading%22">Reading</searchLink><br /><searchLink fieldCode="DE" term="%22Unilateral+neglect%22">Unilateral neglect</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Italy%22">Italy</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: This study investigated whether and to what extent the reading performance of six Italian right-brain-damaged patients with left neglect dyslexia was affected by lexical variables. The lexicality of responses (either words or nonwords) and the distribution of substitution vs. omission neglect errors were measured. Patients were given the following tasks: (1) reading aloud monomorphemic words of different frequencies and nonwords with different degrees of similarity to real words (Experiment 1); (2) reading aloud morphologically complex (suffixed) derived words and morphologically complex (suffixed) nonwords (Experiment 2). Patients could be distinguished in terms of their sensitivity to the lexical status of the target. Four patients exhibited lexicality effects in their reading performance, while two patients did not. The dissociation is discussed in terms of the interaction between defective visuospatial analysis, which characterises neglect, and higher-order lexical knowledge. The suggestion is made that lexical effects in neglect dyslexia reflect a relative preservation of visuospatial processing of the left side of the letter string, its absence a more severe neglect disorder. This interpretation of the occurrence of lexical effects in left neglect dyslexia in terms of severity of the spatial disorder is specific to the domain of reading, however, and does not extend to other manifestations of unilateral spatial neglect. Finally, the relationship between error type (omissions vs. substitutions) and the absence vs. presence of lexical effects is considered. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Cognitive Neuropsychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/02643290244000013
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      – Code: eng
        Text: English
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        PageCount: 24
        StartPage: 421
    Subjects:
      – SubjectFull: Dyslexia
        Type: general
      – SubjectFull: Reading
        Type: general
      – SubjectFull: Unilateral neglect
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      – SubjectFull: Italy
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      – TitleFull: Lexical effects in left neglect dyslexia: A study in Italian patients.
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            NameFull: Arduino, Lisa S.
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            NameFull: Burani, Cristina
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            NameFull: Vallar, Giuseppe
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              M: 07
              Text: Jul2002
              Type: published
              Y: 2002
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