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Dichotic pitcha new stimulus distinguishes normal and dyslexic auditory function

 

作者: Robert Dougherty,   Max Cynader,   Bruce Bjornson,   Dorothy Edgell,   Deborah Giaschi,  

 

期刊: NeuroReport  (OVID Available online 1998)
卷期: Volume 9, issue 13  

页码: 3001-3005

 

ISSN:0959-4965

 

年代: 1998

 

出版商: OVID

 

关键词: Auditory perception;Binaural masking level difference;Developmental dyslexia;Dichotic pitch;Inter-aural time difference;Sound localization

 

数据来源: OVID

 

摘要:

TWO patterns of appropriately filtered acoustic white noise can be binaurally fused by the human auditory system to extract pitch and location information that is not available to either ear alone. This phenomenon is called dichotic pitch. Here we present a new method for generating more effective and useful dichotic pitch stimuli. These novel stimuli allow the psychophysical assessment of dichotic pitch detection thresholds. We show that dichotic pitch detection is significantly impaired in individuals with developmental dyslexia, as compared to average readers. These results suggest a low-level auditory deficit associated with dyslexia and also demonstrate the potential value of our new dichotic pitch stimuli for assessment of auditory processing.

 

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