Visibility of silent speech tongue movements

What is it about?

Existing evidence indicates that talkers attempt to increase the visibility of their lip and jaw movements in adverse speaking conditions (such as a noisy environment or silent speech). This study examines whether talkers also attempt to increase visibility of the tongue in similar conditions.

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Photo by Kristina Flour on Unsplash

Photo by Kristina Flour on Unsplash

Why is it important?

Our findings provide evidence that talkers may be aware at some level of the tongue's contribution to visual speech intelligibility. Previously, the tongue has often been treated as a non-visible articulator.