On audiological assessment of a child with suspected auditory processing disorder (APD), which test specifically evaluates the brain's ability to process degraded or competing speech signals in the central auditory pathway above the brainstem?

• A Auditory brainstem response (ABR)
• B Distortion product otoacoustic emissions (DPOAEs)
• C Dichotic digit test ✓
• D Acoustic reflexes

Explanation

The dichotic digit test (and other dichotic listening tests) evaluates central auditory processing by presenting different numbers simultaneously to each ear and asking the listener to recall both — this challenges the binaural integration and separation abilities of the central auditory cortex. It is a key behavioral test for APD. ABR tests peripheral and brainstem auditory function up to the inferior colliculus. OAEs test outer hair cell function (purely peripheral). Acoustic reflexes test the stapedius reflex arc at the brainstem level.

Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.