Psychology Commons^™

Audiovisual Speech Perception: A Speech Production Approach, Michelle A. Jarick

Theses and Dissertations (Comprehensive)

The purpose of these studies was to test the main assumptions outlined in the Motor Theory of speech perception that (1) speech perception is linked to speech production, (2) audiovisual integration of speech occurs automatically and after the motor commands are activated, and (3) we perceive the intended gestures, which are extracted by a specialized ‘phonetic module’ in the brain. In Experiment 1, we used a Stroop-like paradigm, where participants viewed and listened to a speaker producing speech syllables (/aba/ or /aga/) in three conditions: audio-only, visual-only, and audiovisual. Participants were asked to ignore irrelevant speech stimuli, and to identify …