Binaural Interaction Component of Middle Latency Response in Children Suspected to Central Auditory Processing...

Area of Science:

• Audiology
• Neuroscience
• Pediatrics

Background:

• Binaural processing disorder is a key deficit in children with (C)APD, necessitating reliable evaluation methods.
• Subjective auditory tests require patient attention, highlighting the need for objective assessments.
• Objective evaluation of binaural processing is crucial for accurate diagnosis in children.

Purpose of the Study:

• To investigate the binaural interaction component (BIC) of the middle latency response (MLR) in children suspected of (C)APD.
• To determine if MLR and BIC can objectively differentiate children with (C)APD from normal children.
• To assess the clinical availability and objectivity of MLR and BIC for diagnosing (C)APD.

Main Methods:

• Sixty children (8-12 years) suspected of (C)APD and sixty normal children were recruited.
• Middle latency response (MLR) tests were conducted, including monaural (right/left ear) and binaural conditions.
• Binaural interaction component (BIC) was calculated by subtracting the binaural response from the sum of monaural responses.

Main Results:

• Significant differences were observed in Pa and Na latencies (ms), Pa-Na amplitude (µv), and BIC latency and amplitude (µv) between children with and without (C)APD (p ≤0.001).
• MLR and BIC demonstrated significant differences in objective measures between the two groups.
• The study found statistically significant variations in key electrophysiological markers.

Conclusions:

• Middle latency response (MLR) and its binaural interaction component (BIC) are clinically available and objective tests.
• MLR and BIC can be utilized to identify children suspected of (C)APD.
• These objective measures show potential for differentiating children with (C)APD from their normal-hearing peers.