Prolonged attentional dwell time in dyslexic adults

Dyslexic adults have been shown to be slow in processing rapid sequences of stimuli in all sensory modalities. We now demonstrate, by means of an attentional blink task, that the attentional dwell time is prolonged by approximately 30% in dyslexic adults compared with normal readers. Thus a target captures attentional resources for considerably longer time in dyslexics than control subjects. The observed prolongation could significantly contribute to the sluggish temporal processing of dyslexic adults.

[1]  J. Stein,et al.  To see but not to read; the magnocellular theory of dyslexia , 1997, Trends in Neurosciences.

[2]  Steven L. Miller,et al.  Language learning impairments: integrating basic science, technology, and remediation , 1998, Experimental Brain Research.

[3]  Patrizio E. Tressoldi,et al.  Visual Selective Attention and Reading Efficiency are Related in Children , 1998, Cortex.

[4]  John Duncan,et al.  Restricted attentional capacity within but not between sensory modalities , 1997, Nature.

[5]  Riitta Hari,et al.  Deficit of temporal auditory processing in dyslexic adults , 1996, Neuroscience Letters.

[6]  R Hari,et al.  Non-impaired auditory phase locking in dyslexic adults. , 1999, Neuroreport.

[7]  M. Bryden,et al.  Auditory attentional shifts in reading-disabled students: quantification of attentional effectiveness by the Attentional Shift Index , 1998, Neuropsychologia.

[8]  S. Lehmkuhle,et al.  Research Note Transient Visual Attention is Dominated by the Magnocellular Stream , 1997, Vision Research.

[9]  C. Kennard,et al.  Abnormal temporal dynamics of visual attention in spatial neglect patients , 1997, Nature.

[10]  M. Livingstone,et al.  Physiological and anatomical evidence for a magnocellular defect in developmental dyslexia. , 1991, Proceedings of the National Academy of Sciences of the United States of America.

[11]  R Hari,et al.  Auditory stream segregation in dyslexic adults. , 1999, Brain : a journal of neurology.

[12]  R. Klein,et al.  Dyslexia and a temporal processing deficit: A reply to the commentaries , 1995, Psychonomic bulletin & review.

[13]  A. Vighetto,et al.  A selective imaging of tinnitus. , 1999, Neuroreport.

[14]  Kimron Shapiro,et al.  Direct measurement of attentional dwell time in human vision , 1994, Nature.

[15]  A. Galaburda,et al.  Evidence for aberrant auditory anatomy in developmental dyslexia. , 1994, Proceedings of the National Academy of Sciences of the United States of America.

[16]  A. Nobre,et al.  The Large-Scale Neural Network for Spatial Attention Displays Multifunctional Overlap But Differential Asymmetry , 1999, NeuroImage.