Journal article ยท Ahead of Print article
A Vibrotactile Alarm System for Pleasant Awakening
There has been a vast development of personal informatics devices combining sleep monitoring with alarm systems, in order to find an optimal time to awaken a sleeping person in a pleasant way. Most of these systems implement auditory feedback, which is not always pleasant and may disturb other sleepers.
We present an adaptive alarm system that detects sleeping cycles and triggers alarm signal during shallow sleep, to minimize sleep inertia. Since tactile sensation is associated with positive valence, vibrotactile stimulation is investigated as a silent alarm to enhance pleasant awakening. Three modulation techniques to render the tactile stimuli for pleasant awakening are considered, namely simultaneous, continuous, and successive stimulation.
Two experimental studied are conducted. Experiment 1 studied exogenous attention towards tactile stimulation in a multimodal scenario (involving visual and haptic interactions) with fully awake individuals. Results from the attention task and the subjective valence rating suggest that the vibrotactile stimulation should be based on the continuous modulation, since this not only is very perceivable but also associated with positive attention.
Experiment 2 evaluated the user experience with tactile stimulation patterns during sleep. Results confirmed the findings of experiment 1. Continuous modulation was rated highest for pleasant yet arousing sleep-awake transition.
Language: | English |
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Publisher: | IEEE |
Year: | 2018 |
Pages: | 357-366 |
ISSN: | 23294051 , 19391412 and 23340134 |
Types: | Journal article and Ahead of Print article |
DOI: | 10.1109/TOH.2018.2804952 |
Affective Haptics Evaluation/Methodology Haptic I/O Health Care Pervasive Computing Psychology User-centered Design Vibrotactile Stimulation
Adaptive systems Alarm systems Clocks Electroencephalography Haptic interfaces Indexes Sleep Vibrotactile stimulation adaptive alarm system affective haptics alarm systems auditory feedback biomedical measurement evaluation/methodology haptic I/O haptic interaction health care neurophysiology patient monitoring personal informatics devices pervasive computing psychology shallow sleep silent alarm sleep sleep inertia sleep monitoring sleep-awake transition sleeping cycles tactile sensation tactile stimulation patterns tactile stimuli touch (physiological) user-centered design vibrotactile alarm system vibrotactile stimulation visual interactions