Adaptive Sensory Stimulation for Sleep Slow Wave Enhancement
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Solution Overview
Problem
Existing sleep management systems fail to effectively adjust sensory stimulation intensity during slow wave sleep to enhance slow wave activity without waking the subject, as they often apply stimuli at fixed intervals or intensities that do not align with the subject's sleep patterns.
Innovation Solution
A system that incrementally increases sensory stimulation intensity based on real-time sleep stage analysis, using sensors and processors to determine the effectiveness of stimulation and adjust intensity levels during slow wave sleep episodes, ensuring the stimulation does not wake the subject and maximizes slow wave activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sensory stimulation intensity is increased to enhance slow wave activity, then sleep quality and cognitive performance are improved, but the subject may be woken from sleep
Solution Approach 1:
The system dynamically adjusts sensory stimulation intensity in real-time based on detected sleep stage and slow wave activity levels. The stimulation intensity is not fixed but varies continuously to match the subject's physiological state, allowing enhancement of slow wave activity during appropriate phases while avoiding awakening during lighter sleep stages.
Solution Approach 2:
The system uses feedback from sleep stage detection and slow wave activity monitoring to control stimulation delivery. The detected slow wave activity serves as feedback to determine whether additional stimulation is needed, creating a closed-loop system that enhances slow wave activity only when beneficial and stops before causing awakening.
2Productivity
If sensory stimulation is applied continuously at fixed intervals, then stimulation simplicity is maintained, but it does not align with subject's sleep patterns and reduces effectiveness
Solution Approach 1:
The system transitions from fixed-interval stimulation to dynamic, adaptive stimulation timing. Stimulation is delivered based on real-time detection of sleep stage entry and slow wave activity patterns, allowing the system to adapt to individual subject's sleep architecture and enhance effectiveness.
Solution Approach 2:
The system changes the timing parameter of stimulation delivery based on detected sleep physiology. Instead of fixed intervals, stimulation timing is adjusted according to detected sleep stage transitions and slow wave cycles, optimizing the parameters of stimulation delivery to match natural sleep patterns.
Data Source
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AI summary
A system is configured to provide sensory stimuli to a subject at a first intensity level, determine the effectiveness of the provided sensory stimuli, and incrementally increase the intensity level of the sensory stimuli based on the determined effectiveness. The effectiveness determination and the corresponding intensity increase are repeated one or more times during a given slow wave sleep episode. The system is configured to continue the effectiveness determinations and the corresponding intensity increases during the slow wave sleep episode until the intensity level reaches a maximum level, until an arousal level of the subject breaches an arousal level threshold, and/ or until expiration of the period of slow wave sleep.