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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