Seminars in Hearing Research at Purdue (SHRP)

Date: Thursday, March 24,  2022

Time: 10:30 – 11:20 am

Location: LYLE 1150

Speaker: Maureen Shader, Assistant Professor, SLHS

Title: Auditory- and visual-speech processing in the adult auditory cortex immediately after cochlear implantation

Abstract: Sensory deprivation causes structural and functional changes to the human brain, and a diverse range of neuroimaging techniques have informed our understanding of these changes. The cortical changes that occur after the reintroduction of sensory input is less well-understood, primarily due to a lack of compatible neuroimaging techniques. Cochlear implantation delivers essentially immediate reintroduction of acoustic sensory information to the brain and provides a mechanism with which to understand how the brain adapts to abrupt reinstatement of sensory percepts. Previous reports have indicated that over a year is required for the brain to reestablish canonical cortical processing patterns after the reintroduction of auditory stimulation. However, these investigations have utilized imaging techniques that are not well suited to studying the brain in the presence of a cochlear implant, and consequently have used simple artificial stimuli that are not representative of typical listening. This talk will present a study using functional near-infrared spectroscopy (fNIRS)—a light-based neuroimaging method that is compatible with implanted devices—to investigate brain activity to natural speech stimuli directly after cochlear implantation and to determine if atypical cortical processing patterns are observed. Results for auditory-only speech and visual-only speech will be presented for both unilateral and bilateral cochlear implant recipients immediately following implant activation.

Zoom info for remote attendees:

https://purdue-edu.zoom.us/j/93108158900?pwd=RDdTQ0Z4UE9Rb0JUenhjMG1SMkp2QT09

Meeting ID: 931 0815 8900 

Passcode: 11501150

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The working schedule is available here: https://purdue.edu/TPAN/hearing/shrp_schedule

The titles and abstracts of the talks will be added here: https://purdue.edu/TPAN/hearing/shrp_abstracts