The P1 biomarker for assessing cortical maturation in pediatric hearing loss: a review

Area of Science:

• Neuroscience
• Auditory Neuroscience
• Developmental Neuroscience

Background:

• Central auditory pathways exhibit high neuroplasticity in early childhood.
• Deafness can lead to cortico-cortical de-coupling and cross-modal re-organization.

Purpose of the Study:

• To review evidence on neuroplasticity in the developing auditory system.
• To highlight the clinical utility of the P1 cortical auditory evoked potential (CAEP) as a biomarker.
• To demonstrate the application of P1 CAEP in clinical decision-making for pediatric hearing loss.

Main Methods:

• Review of studies on P1 and N1 cortical auditory evoked potentials (CAEPs).
• Analysis of CAEPs in children with congenital deafness, cochlear implants, auditory neuropathy spectrum disorder, and hearing loss with comorbidities.
• Examination of neuroplasticity mechanisms including cortico-cortical de-coupling and cross-modal re-organization.

Main Results:

• Evidence supports significant neuroplasticity in early childhood auditory pathways.
• P1 CAEP is a valuable non-invasive biomarker for assessing auditory cortex maturation.
• P1 CAEP aids in clinical decisions for various pediatric hearing conditions.

Conclusions:

• The P1 CAEP is a clinically useful biomarker for objectively assessing auditory cortex development in children.
• Understanding neuroplasticity and utilizing P1 CAEP can guide interventions for diverse pediatric hearing impairments.