Olivia Bizimungu

Graduate Student
McGill Univ
Email author

Neural mechanisms of sensorimotor integration speech perception

Olivia Bizimungu, Lucie Ménard, Sylvain Baillet

Hi there!

I'm a Master's student at McGill University's Integrated Program in Neuroscience, studying in the NeuroSPEED lab. I am interested in the link between speech production and perception mechanisms, and the role that neural oscillations play in this connection.

Previously, I completed my BSc in Cognitive and Computer Science at Mount Allison University where I studied visuospatial relational perception and its connection to episodic memory.

Neural mechanisms of sensorimotor integration speech perception

Olivia Bizimungu, Lucie Ménard, Sylvain Baillet
Abstract

Speech perception is informed by inputs beyond audition: perturbing the speech articulators or stimulating their representations in the brain influences the perception of incoming speech sounds. It is unclear how the brain encodes articulatory representations and uses them in speech perception. My goal is therefore to understand such interactions between auditory and sensorimotor systems – using magnetoencephalography to map brain activity during a categorical speech perception task. Participants classified spoken vowels under two conditions: normal, and with a plastic tube between the lips. We predict that 1) the perceptual boundary between the vowels will be shifted in the lip-tube condition; and 2) the presence of the lip-tube will alter neural signals in the sensorimotor cortex, thereby modulating its communication with the auditory cortex, ultimately influencing the sound classification outcome.

Poster
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