Gamma Stimulation Lighting With Invisible Flicker Control
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Solution Overview
Problem
Existing lighting solutions for treating Alzheimer's disease using flickering lights between 35 Hz to 45 Hz can cause visual discomfort, and existing methods to mitigate this discomfort are not sufficiently adaptable to individual user preferences or needs.
Innovation Solution
A lighting apparatus with a controller and multiple light sources, including LEDs or OLEDs, that alternately strobe or superimpose frequencies to create invisible flickering, adjustable to individual tolerance levels, and optionally incorporates NIR wavelengths for theta or gamma brain stimulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light source is flickered at a frequency between 35 Hz to 45 Hz to stimulate brain cells for treating Alzheimer's disease, then the therapeutic effect is improved, but visual discomfort to the eyes is caused
Solution Approach 1:
The light output is segmented into multiple discrete levels (e.g., 100%, 75%, 50%, 25%, 0%) rather than continuous modulation. This segmentation allows the light to transition between distinct brightness states at the gamma frequency (35-45 Hz) while maintaining an average brightness that appears steady to the human eye, thereby providing therapeutic stimulation without causing visual discomfort from perceptible flickering.
2Object-affected harmful factors
If existing methods to mitigate visual discomfort are used, then visual comfort is improved, but adaptability to individual user preferences or needs is reduced
Solution Approach 1:
The lighting apparatus incorporates dynamically adjustable parameters including modulation depth (controlling the extent of brightness variation), strobe frequency (within the 35-45 Hz gamma range), and duty cycle (ratio of ON time to total period). These dynamic controls allow the system to adapt to individual user preferences and needs while maintaining the therapeutic gamma frequency stimulation, resolving the contradiction between comfort and adaptability.
3Object-affected harmful factors
If multiple light sources with different color temperatures are used to create invisible flickering, then visual comfort is improved, but device complexity is increased
Solution Approach 1:
Instead of using multiple light sources with different color temperatures, this invention achieves invisible flickering by modulating the intensity parameter of a single light source. By varying the modulation depth and duty cycle, the system creates gamma frequency stimulation that appears steady to the human eye, thereby reducing device complexity while maintaining visual comfort and therapeutic effectiveness.
Data Source
AI summary
A lighting apparatus comprises a controller and three lights sources each with a different color temperature. The controller turns on the second light source and the third light source alternately at a strobing frequency between 30 Hz and 65 Hz, resulting in a strobing light (out of the second light source and the third light source) with a combined color temperature approximating the color temperature of the first light source. Alternatively, the lighting apparatus includes a controller and two light sources. The first light source and the second light source operate at different frequencies, resulting in a superimposed light with an operating frequency equal to the difference of these two frequencies. Alternatively, the lighting apparatus turns off one of the two light sources periodically for a short period of time to induce the brain of a subject to better recognize the frequency of the superimposed light.