Auditory perception in paediatric cochlear implant recipients – role of fine structure cues

Kamala Sarathy; Jaya.V; Reenu Celshiya.A; Sampath Kumar.R; Saraswathi.K

Volume : VI, Issue : XII, December - 2017

Auditory perception in paediatric cochlear implant recipients – role of fine structure cues

Kamala Sarathy, Jaya. V, Reenu Celshiya. A, Sampath Kumar. R, Saraswathi. K

Abstract :

The main aim of the study is to find the importance of fine structure cues for auditory perception in paediatric cochlear implantees. Auditory perception was evaluated in four paediatric cochlear implantees with FS4P speech coding strategy under five conditions. In each condition, a fine structure electrode were disable successively. Auditory perception was assessed by obtaining aided audiogram and speech identification scores using ling sounds. Baseline aided audiogram was compared to the audiograms obtained in different conditions to evaluate the difference in auditory perception. The lesser availability of fine structure electrodes, reduced the temporal and fine structure information which resulted in impaired auditory perception which was evident from increase in aided thresholds. Apical electrodes are primarily responsible for fine structure and temporal processing, loss of fine structure and temporal cues markedly affects auditory perception.