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Re: Auditory illusion, and Auditory Processing Disorder

Dear Kevin,

Without wishing to be overly pedantic about this, I really do think you need to define what you might mean by an "auditory illusion", to answer a question like this one. I guess that certain 'low-level' auditory illusions (i.e., that arise from auditory features of the cochlear, AN and brainstem processing), if that is what they are accepted as being, might be different in APD, e.g., the audibility of a mistuned harmonic in a complex tone. Other 'high-level' illusions, that necessitate cortical processing, e.g., the tritone paradox, that presupposes the existence of an implicit form of absolute pitch, might not be ...

You'd really need to modify alot of these illusion tasks to get them into some form that gives you a reliable performance metric, which they may not easily provide at the moment?


On Aug 9 2011, Kevin Austin wrote:

What, if any, are the relationships between 'auditory illusion', and APD (auditory processing disorder)?

Is it that APD is diagnosed as being less prevalent? What might cause it to be up to eight times more prevalent in adults than in children? Are auditory illusions more prevalent in children than in adults?




Auditory Processing Disorder (APD), also known as (Central) Auditory Processing Disorder ((C)APD) is an umbrella term for a variety of disorders that affect the way the brain processes auditory information. It is not a sensory (inner ear)hearing impairment; individuals with APD usually have normal peripheral hearing ability. However, they cannot process the information they hear in the same way as others do, which leads to difficulties in recognizing and interpreting sounds, especially the sounds composing speech.

APD can affect both children and adults. Approximately 2-3% of children and 17-20% of adults have this disorder. Males are two times more likely to be affected by the disorder than females.

José Ignacio Alcántara, PhD
University Lecturer
Department of Experimental Psychology
University of Cambridge
Downing Street
Cambridge CB2 3EB
Tel: +44 (0)1223 764412

Fellow of Fitzwilliam College
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Tel: +44 (0)1223 472126