Towards Speech-evoked Frequency Following Responses in Cochlear Implant Users.
Jana Van Canneyt
Research Seminar
When?
Monday, 1 October 2018, 16:00-17:00
Where?
Seminar room HP4
O&N2, 4th floor, Gasthuisberg (KU Leuven)
Herestraat 49
B-3000 Leuven
Abstract
Frequency-following responses (FFR) reflect dynamic, phase-locked neural activity to the spectro-temporal features of the evoking stimulus. They are recorded using EEG and the evoking stimuli can vary widely in complexity, i.e. from repeated modulated tones to running speech. FFRs have provided information on neural encoding of speech and music in the acoustically stimulated auditory system, and on how this encoding changes with learning, ageing and (language) experience. This type of research would be very valuable in the context of cochlear implant users, as processing of electrical auditory stimulation is less understood. Over the last years, our lab has investigated FFRs in cochlear implant (CI) users for amplitude modulated stimuli with modulation frequencies up to 100 Hz. In this seminar, I will discuss our pilot studies with modulation frequencies up to 300 Hz and our future plans to work towards speech-evoked FFRs in CI users. Besides this, I will discuss our recent study on the effect of envelope shape on the FFR in normal hearing listeners.
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