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Understanding Central Auditory Processing Disorders (CAPD)

Learn about CAPD, including causes, symptoms, recognition methods, and testing procedures for individuals with auditory processing deficits. Discover how CAPDs impact daily life and cognitive functions.

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Understanding Central Auditory Processing Disorders (CAPD)

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  1. Disorders Friday!?!/*%#Or Into the black box… Reading Assignments: Chapter 13 (all) Chapter 14 (pp. 220-228 only)

  2. Central Auditory Processing Disorders (CAPD) • CAPD: aberrant behavior caused by pathology of midbrain or cortex • Common case: lesion of temporal cortex • Temporal cortex: Section of cortex devoted to primary and secondary auditory processing • Other causes: lesion between pathways connecting temporal cortex to other areas

  3. Central Auditory Processing Disorders (CAPD) • Major concerns for CAPDs • Pre or post-lingual • Post-lingual tends to cause more specific deficits • Pre-lingual causes general auditory problems • Difficult to assess • General symptoms • Non-specific tests

  4. How are CAPDs recognized? • Deficit in one of the following: • Localization • Categorization • Pattern recognition • Lexical processing • Auditory attention • Echoic memory • Sustained attention

  5. How are CAPDs recognized? • Deficit in one of the following (con’t): • Temporal resolution • Phase locking deficits • Higher gap detection thresholds • Signal to noise/signal processing • Inability to understand speech in noise • CAPDs may not be limited to auditory system • General atrophy of system affecting multiple modalities • High level: ADD • Low level: Temporal jittering

  6. Testing for CAPDs • Caveat of testing • Subtlety of symptoms • Range of disorders • Audiometric assessment • Span of apprehension • Repeat digit sequence • 7 +/- 2 normed across age groups • Greater or lesser • Lexical decoding • Presentation of overlapping words • Hotdog/Wheelchair (dog=wheel) • Amount of interference (order effects, ear of presentation effects) • Phonological decoding • Ability to organize phonemes into words • Predicts reading ability (Reversals, speed of response/ADD

  7. Popcorn?

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