Elektro-akustische Stimulation

• Investigation of psychoacoustic electric-acoustic masking for combined EAS
• The effect of ES on acoustic hearing if electric and acoustic stimuli are presented simultaneously.
• The effect of AS on electric hearing if electric and acoustic stimuli are presented simultaneously.

• Electrophysiological measurements are used to examine electric-acoustic interaction in EAS users.
• Telemetry capabilities of the CI systems are used to derive intracochlear electrocochleography in EAS users.
• Cochlear microphonic (CM) and auditory nerve neurophonic (ANN) potentials, recorded in response to AS, ES, and in response to combined EAS are used to determine peripheral electric-acoustic interaction electrophysiologically.

• Development and evaluation of sound coding for EAS users conveying low-frequency information of speech electrically to improve the speech perception for ES alone.
• Investigation of EAS fittings to optimize speech perception for EAS users.

• Development of 3D models of the cochlea for ES and EAS
• Models of neural coding in auditory nerve fibers in response to ES, AS, and EAS
• Models of electrophysiological responses such as the electrically or acoustically evoked compound action potential to investigate the effect of electric-acoustic interaction on these measures
• Neural networks to emulate psychoacoustic experiments or speech perception of EAS users in different neural health conditions
• See also: Computational Modelling

• Investigation of central electric acoustic interaction through speech understanding performance and cortical EEG measurements;
• Investigation of peripheral electric acoustic interaction through electric-acoustic pitch matching and measurement of auditory brainstem responses;
• Optimization of the CI fitting using the measurements of central and peripheral electric acoustic interaction.

Abbreviations: * ES: electric stimulation * AS: acoustic stimulation * EAS: electric-acoustic stimulation