Pulsed Light Therapy System for Brainwave Entrainment
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Solution Overview
Problem
Current brainwave light therapy (BLT) methods are intrusive and annoying, making long-term compliance difficult due to the need for continuous exposure to flickering lights, which is not seamlessly integrated into daily life, and they do not effectively address the degradation of gamma waves and circadian rhythms associated with Alzheimer's disease.
Innovation Solution
A system and method that minimizes the intrusiveness of BLT by using pulsed light sources configured to emit light between different intensities or colors, incorporating gaze-based, activity-dependent, and metamer-based approaches to deliver light therapy through daily-use devices, such as displays and lighting, to entrain brainwaves while moderating circadian cycles and neuropsin generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous flickering light is used for brainwave entrainment, then gamma wave entrainment effectiveness is improved, but user compliance and comfort deteriorate due to intrusiveness and annoyance
Solution Approach 1:
The patent applies periodic action by using pulsed light at specific frequencies (e.g., 40 Hz) to entrain gamma brainwaves, while varying the duty cycle and pulse patterns to maintain effectiveness while reducing perceptibility. The system alternates between active light emission phases and rest phases, creating periodic stimulation that is both therapeutically effective and more tolerable for long-term use.
Solution Approach 2:
The system dynamically changes multiple parameters including light intensity, pulse frequency, duty cycle, and spectral composition to optimize the balance between entrainment effectiveness and user comfort. By adjusting these parameters based on user response and context, the system maintains therapeutic efficacy while minimizing annoyance and improving compliance.
2Reliability
If high intensity pulsed light is used for effective brainwave entrainment, then gamma wave stimulation is improved, but visual detectability and user annoyance increase
Solution Approach 1:
The patent applies local quality by targeting specific visual field regions (e.g., peripheral vs. central vision) and using wavelength-specific approaches. Different wavelengths and spatial distributions are used to achieve entrainment while minimizing detection in conscious vision. The system can focus stimulation in specific angular regions where it is less perceptible to the user.
Solution Approach 2:
The system uses partial action by applying light stimulation at intensities and durations that are sufficient to achieve entrainment effects but below the threshold of obvious perceptibility. By using sub-threshold or near-threshold intensities with appropriate pulse patterns, the system achieves therapeutic effects without creating obviously detectable or annoying light exposure.
3Duration of action of moving object
If long duration light therapy is applied for meaningful results, then cognitive function improvement is improved, but user tolerance and compliance deteriorate due to cumulative annoyance
Solution Approach 1:
The system applies dynamics by continuously adapting light parameters including intensity, frequency, duty cycle, and spectral composition based on real-time user response, context, and accumulated exposure. This dynamic adjustment allows the system to maintain effectiveness over long durations while preventing cumulative annoyance by varying the stimulation characteristics throughout the treatment session and across multiple sessions.
Solution Approach 2:
The patent applies segmentation by dividing treatment into multiple shorter sessions with varied parameters rather than one continuous long session. Treatment can be segmented across different times of day, with different pulse patterns and intensities used in different segments, making long-term compliance more achievable while accumulating therapeutic effects over time.
4Reliability
If visible light is used for brainwave entrainment, then gamma wave stimulation is achieved, but circadian rhythm disruption and melatonin suppression occur
Solution Approach 1:
The system applies preliminary action by using specific wavelength ranges (e.g., red light around 630-680 nm) that are less suppressive of melatonin while still effective for gamma wave entrainment. By selecting wavelengths that preliminary research shows have minimal circadian disruption, the system achieves entrainment benefits without the harmful side effects of blue-enriched light.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the spectral composition, intensity, and timing of light emission to decouple entrainment effects from circadian disruption. By using lower intensities, specific wavelength ranges, and timing the stimulation away from critical circadian periods, the system maintains gamma wave entrainment effectiveness while minimizing melatonin suppression and circadian rhythm disruption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables non-obtrusive, long-term brainwave entrainment, improving cognitive functions and reducing the risk of Alzheimer's disease by seamlessly integrating BLT into daily life, enhancing compliance and effectiveness through synergistic combinations with other light therapies.
Implementation Method 1
a pulsed light source configured for emitting pulsed light oscillating between first and second states
Implementation Method 2
the first and second states comprise at least one of (1) different intensities of the same light color, (2) different light colors, (3) different intensities of different light colors; and (4) metamers
Data Source
AI summary
A system for delivering light therapy, the system comprising: (a) a first light source for emitting continuous light; and (b) a second light source for emitting pulsed light having a frequency of between 40 and 200 Hz in integer multiples of 20 Hz.