[P300 in subjects with hearing loss]

Area of Science:

• Auditory Neuroscience
• Neurophysiology
• Audiology

Context:

• Behavioral and electrophysiological evaluations are crucial for understanding the auditory system and guiding interventions.
• Congenital severe to profound hearing loss affects auditory processing and requires comprehensive assessment.
• The P300 event-related potential offers insights into cognitive processing in auditory pathways.

Purpose:

• To investigate the occurrence of the P300 response in subjects diagnosed with congenital severe to profound hearing loss.
• To analyze the influence of gender, age, and hearing loss severity on P300 characteristics (latency and amplitude).

Summary:

• A descriptive transversal study evaluated 29 subjects (11-42 years) with congenital severe to profound sensorineural hearing loss.
• P300 was successfully recorded in 17 out of 29 participants.
• Latency showed a significant difference with age (p < 0.003), and amplitude varied significantly with hearing loss level (p < 0.0015).

Impact:

• This study demonstrates the feasibility of recording P300 in individuals with significant hearing impairment.
• Findings highlight the relationship between P300 measures and audiological variables, informing diagnostic and rehabilitative strategies.
• The results contribute to a deeper understanding of central auditory processing in hearing-impaired populations.