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Sci Rep ; 11(1): 23000, 2021 11 26.
Artigo em Inglês | MEDLINE | ID: mdl-34837013

RESUMO

Faces and words are traditionally assumed to be independently processed. Dyslexia is also traditionally thought to be a non-visual deficit. Counter to both ideas, face perception deficits in dyslexia have been reported. Others report no such deficits. We sought to resolve this discrepancy. 60 adults participated in the study (24 dyslexic, 36 typical readers). Feature-based processing and configural or global form processing of faces was measured with a face matching task. Opposite laterality effects in these tasks, dependent on left-right orientation of faces, supported that they tapped into separable visual mechanisms. Dyslexic readers tended to be poorer than typical readers at feature-based face matching while no differences were found for global form face matching. We conclude that word and face perception are associated when the latter requires the processing of visual features of a face, while processing the global form of faces apparently shares minimal-if any-resources with visual word processing. The current results indicate that visual word and face processing are both associated and dissociated-but this depends on what visual mechanisms are task-relevant. We suggest that reading deficits could stem from multiple factors, and that one such factor is a problem with feature-based processing of visual objects.


Assuntos
Cognição/fisiologia , Dislexia/patologia , Reconhecimento Facial/fisiologia , Leitura , Transtornos da Visão/fisiopatologia , Percepção Visual/fisiologia , Adulto , Estudos de Casos e Controles , Feminino , Lateralidade Funcional , Humanos , Masculino , Pessoa de Meia-Idade , Auxiliares Sensoriais , Processamento de Texto , Adulto Jovem
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