Dual-Light Gamma Stimulation for Flicker-Free Brain Entrainment
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Solution Overview
Problem
Existing gamma stimulation apparatuses using flickering lights at frequencies between 35 Hz and 45 Hz cause visual discomfort and fail to effectively implement a recalibration cycle for improved treatment efficacy.
Innovation Solution
A gamma stimulation apparatus with a control module and MOS switches operates two light sources at different frequencies, producing a superimposed light that appears flicker-free, and incorporates a recalibration cycle to enhance treatment effectiveness for Alzheimer's disease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single light source is flickered at a frequency between 35 Hz and 45 Hz to stimulate brain cells, then the treatment effect for Alzheimer's disease is improved, but visual discomfort is caused to the subject's eyes
Solution Approach 1:
The single flickering light source is segmented into two separate light sources (first and second light sources) operating at different frequencies. Each light source operates at a higher frequency (above 45 Hz) individually, but their combined effect produces a gamma frequency difference (35-45 Hz) that stimulates brain cells without causing visual discomfort from direct flicker perception
2Object-affected harmful factors
If two light sources operate at different frequencies to produce superimposed flicker-free light, then visual discomfort is reduced, but the brain cannot effectively phase-lock with the frequency for optimal treatment
Solution Approach 1:
A recalibration cycle is implemented where the two light sources periodically alternate operation: during the first time period, only the first light source operates at its frequency; during the second time period, only the second light source operates at its frequency. This periodic mono-frequency operation allows the subject's brain to phase-lock with each frequency sequentially, improving frequency recognition while maintaining flicker-free perception during dual operation
Solution Approach 2:
The recalibration cycles are interspersed between dual-light operation periods, ensuring continuous treatment effect. The alternating pattern maintains overall therapeutic benefit by combining periods of frequency-specific brainwave entrainment with periods of gamma frequency stimulation, preventing treatment interruption while enabling effective frequency locking
Data Source
AI summary
A gamma stimulation apparatus comprises a rectifier, a control module, a first modulation operation switch (MOS), a second MOS, and first and second light sources. The control module operates the first light source at a first operating frequency (OF1) via the first MOS, and the second light source at a second frequency (OF2) via the second MOS. The first and second light outputs superimpose each other to form a superimposed light having a superimposed frequency equal to OF2−OF1 and between 20 Hz and 45 Hz. For every fixed period of a recalibration cycle, the control module is configured to operate only one of the two light sources or operate two light sources at a same frequency.