Project

ambienBeat: Mobile tactile biofeedback for subliminal heart rate rhythmic regulation

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Kyung Yun Choi

Kyung Yun Choi

We present a mobile heart rate regulator—ambienBeat—which provides closed-loop ambient biofeedback via subliminal tactile stimulus based on a user's heartbeat rate variability (HRV). We applied the principle of interpersonal physiological synchronization to achieve our goal of effortless regulation of HRV, which is tightly coupled with mental stress levels. ambienBeat provides various patterns of subliminal tactile stimuli, which mimics the feeling of a heartbeat pulse, to guide a user's HRV to resonate with its rhythmic, tactile patterns. The strength and rhythmic patterns of tactile stimulation are controlled to a level below the cognitive threshold of an individual's tactile sensitivity on their wrist so as to minimize task disturbance. Here we present an acoustically noiseless, soft voice-coil actuator to render the ambient tactile stimulus and present the system and implementation process. We evaluated our system by comparing it to ambient auditory and visual guidance. Results from the user study shows that the subliminal tactile stimulation was effective in guiding a user's HRV to resonate with ambienBeat to eith… View full description

We present a mobile heart rate regulator—ambienBeat—which provides closed-loop ambient biofeedback via subliminal tactile stimulus based on a user's heartbeat rate variability (HRV). We applied the principle of interpersonal physiological synchronization to achieve our goal of effortless regulation of HRV, which is tightly coupled with mental stress levels. ambienBeat provides various patterns of subliminal tactile stimuli, which mimics the feeling of a heartbeat pulse, to guide a user's HRV to resonate with its rhythmic, tactile patterns. The strength and rhythmic patterns of tactile stimulation are controlled to a level below the cognitive threshold of an individual's tactile sensitivity on their wrist so as to minimize task disturbance. Here we present an acoustically noiseless, soft voice-coil actuator to render the ambient tactile stimulus and present the system and implementation process. We evaluated our system by comparing it to ambient auditory and visual guidance. Results from the user study shows that the subliminal tactile stimulation was effective in guiding a user's HRV to resonate with ambienBeat to either calm or boost the heart rate using minimal cognitive load. 

Research Topics
#design #health #wellbeing

Copyright

Kyung Yun Choi

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Kyung Yun Choi

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Kyung Yun Choi

Mechanism of HRV regulation via subliminal tactile biofeedback by ambienBeat

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Kyung Yun Choi

ambienBeat can be worn in any occasion to regulate your HRV without interrupting the task engagement and not necessarily requiring your control. 

Copyright

Kyung Yun Choi

Use-cases for calming down and boosting up effect

Boosting up heart rate;  e.g., driving a car 

Calming down; e.g., getting stressed due to complex tasks/works 

System diagram

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Kyung Yun Choi

Acoustically noise-less soft actuator driven by electromagnetic field

Copyright

Kyung Yun Choi

Copyright

Kyung Yun Choi