Researchers from Duke University have made a fascinating discovery of the relationship between eye movement and the sounds produced by the ears. The study, led by senior author Jennifer Groh, PhD, a professor at Duke University, concluded that inaudible sounds from the ears can be used to track a person’s gaze.
Furthermore, the research revealed that the inaudible sounds can reveal the direction of a person’s gaze. This relationship works both ways, as knowing where someone is looking allows researchers to predict the waveform of the ear sounds.
While the precise purpose of these ear sounds is yet uncertain, it is believed that they may contribute to sharpening people’s perceptions. The study involved 16 adults with unimpaired vision and hearing who participated in a simple eye test and utilized microphone-embedded earbuds to record the corresponding sounds generated by the eye movements.
Analysis of the ear sounds revealed unique signatures for different directions of movement, opening up potential new clinical tests for hearing. The researchers are now exploring whether these ear sounds play a role in perception, particularly in individuals with hearing or vision loss.
The study’s findings offer a unique insight into the intricate connections between the senses and have been published in the journal Proceedings of the National Academy of Sciences. This groundbreaking discovery paves the way for further investigations into the role of ear sounds in human perception.
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