The listening in spatialized noise test: an auditory processing disorder study.

Area of Science:

• Audiology
• Neuroscience
• Speech and Hearing Sciences

Background:

• Auditory processing disorder (APD) affects sound interpretation, impacting communication.
• Traditional APD tests may not fully capture real-world listening challenges.
• The Listening in Spatialized Noise test (LISN) simulates complex auditory environments.

Purpose of the Study:

• To evaluate the efficacy of the LISN in identifying auditory deficits in children at risk for APD.
• To compare LISN performance between children at risk for APD and age-matched controls.
• To assess the utility of LISN measures as a diagnostic tool for APD.

Main Methods:

• The Listening in Spatialized Noise test (LISN) was administered to 10 children at risk for APD and 48 age-matched controls.
• Participants completed the LISN, which uses headphone-delivered virtual auditory environments with spatialized noise.
• Performance was assessed based on the ability to comprehend a target story amidst distracter sentences, with varying spatial cues.

Main Results:

• Children at risk for APD performed significantly worse on all LISN measures compared to controls.
• The APD group showed a reduced spatial advantage (3.7 dB) compared to controls (10.0 dB) when distracters were spatially separated.
• Nine children in the APD group scored outside the normal range on the spatial advantage measure.

Conclusions:

• The LISN effectively differentiated children at risk for APD from controls.
• Spatial cues in the LISN significantly highlighted auditory processing deficits in the APD group.
• The LISN is a promising tool for APD assessment, offering valuable insights into real-world listening difficulties.