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Portable Intermodal Preferential Looking IPL: Investigating Language Comprehension in Typically Developing Toddlers and Young Children with Autism

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A Digital Filter-Based Method for Diagnosing Speech Comprehension Deficits.

Gisele V H Koury¹, Francisca C R da S Araújo¹, Kauê M Costa²

¹Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil.

Mayo Clinic Proceedings. Innovations, Quality & Outcomes

|May 17, 2021

Summary

New digital filters enhance auditory processing disorder (APD) diagnosis and track treatment progress. Performance improves with age and less restrictive filters, showing ACAT benefits even severe cases.

Keywords:

AC, auditory closure ACAT, acoustically controlled auditory training APD, auditory processing disorder BR, binaural resynthesis BRT, binaural resynthesis test FST, filtered speech test HP, high pass HPFST, high pass filtered speech test L1, list 1 L2, list 2 LP, low pass LPFST, low pass filtered speech test

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Area of Science:

Audiology
Neuroscience
Signal Processing

Background:

Auditory processing disorders (APD) present diagnostic challenges.
Current diagnostic tools for APD require improvement in efficiency.
Digital filtering methods offer potential for novel test signal creation.

Purpose of the Study:

To develop and validate new digital filtering methods for APD diagnostic tests.
To improve the diagnostic efficiency of current tests for auditory processing disorders (APD).
To assess the impact of age on auditory processing and the effectiveness of acoustically controlled auditory training (ACAT).

Main Methods:

Prospective study (2014-2019) using novel digital filter-created signals for binaural resynthesis, low-pass, and high-pass filtered speech tests.
Validation and optimization of new tests.
Application to healthy individuals across age groups and children with APD before and after ACAT.

Main Results:

Performance accuracy increased with less restrictive filters (P<.001) and increasing age (P<.001).
Binaural resynthesis and auditory closure maturation rates were found to be similar.
New tests effectively diagnosed APD and monitored ACAT effects, with significant benefits for severely affected patients (P<.001).

Conclusions:

A novel digital filtering method substantially improves APD diagnostic tools.
The study provides insights into auditory processing maturation during normal development.
The method effectively detects APD deficits and ACAT-induced improvements in auditory processing.