Head Photic Stimulation Device with Brain Wave Synchronization
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Solution Overview
Problem
Existing photic stimulation technologies for the head deliver uniform light, leading to varying effects among individuals and discomfort during initial use, as they do not account for individual differences in brain wave patterns.
Innovation Solution
A head photic stimulation device that includes a brain wave amplifier, a control signal generation circuit, and a light irradiation unit with near-infrared LEDs, utilizing band-pass filtering, phase-locked loops, and fast Fourier transform to synchronize light irradiation with individual brain waves, specifically targeting the θ-wave and α-wave bands to enhance comfort and effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uniform light irradiation is applied to the head, then the device structure is simple, but the stimulation effect varies greatly among individuals and discomfort occurs during initial use
Solution Approach 1:
The device incorporates a brain wave sensor that detects the user's brain wave frequency in real-time, and a control signal generation circuit that uses this feedback to dynamically adjust the LED irradiation frequency. This closed-loop feedback system enables the device to adapt to individual brain wave patterns, resolving the contradiction between simplicity and individual adaptability.
Solution Approach 2:
The system transitions from static uniform light irradiation to dynamic adaptive irradiation by continuously monitoring brain wave frequency and adjusting the LED output frequency accordingly. This dynamic adjustment allows the device to optimize stimulation effects for each individual while maintaining a relatively simple overall structure.
2Reliability
If light-driven photic stimulation through the eye is used, then immune system activation can be achieved, but physical stress is imposed on the subject
Solution Approach 1:
The device introduces a new pathway by irradiating the frontal region of the head with pulsed light, using the skull and brain tissue as intermediaries to deliver stimulation to the brain without requiring light to pass through the eyes. This intermediary approach activates immune mechanisms while avoiding the physical stress of ocular light exposure.
Solution Approach 2:
Instead of the conventional approach of stimulating the eyes to activate the immune system, the invention inverts the pathway by stimulating the frontal brain region directly through the skull. This reverse approach achieves immune system activation while eliminating the harmful physical stress associated with ocular stimulation.
3Reliability
If brain wave synchronization is implemented, then discomfort is reduced and immune activation is enhanced, but signal processing complexity increases
Solution Approach 1:
The control signal generation circuit receives brain wave frequency information from the brain wave sensor and uses this feedback to synchronize the LED irradiation frequency with the user's natural brain wave patterns. This feedback-based synchronization enhances immune activation while keeping the signal processing relatively simple by focusing on frequency matching rather than complex waveform analysis.
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 device provides personalized photic stimulation, reducing discomfort and enhancing immune system activation by synchronizing light irradiation with individual brain wave patterns, thereby improving immune function and reducing mental stress.
Implementation Method 1
light passes through the skull and directly reacts with light-sensitive pineal cells
Implementation Method 2
a light source section having a number of near-infrared LEDs arranged on an inner side
Implementation Method 3
a brain wave sensor that subjects subject brain waves to A/D conversion and amplification
Implementation Method 4
a band-pass filter for filtering an input signal, a DSP (signal processing) unit for controlling a signal that has passed through the band-pass filter
Data Source
AI summary
Provided is a head photic stimulation device including: a brain wave amplifier which subjects the subject brain waves acquired using a brain wave sensor to A/D conversion and amplification; a control signal generation circuit which, based on an output signal from the brain wave amplifier, generates a control signal for controlling LED driving; and a light irradiation unit which is driven based on an output from the control signal generation circuit, and which includes an LED for irradiating a head. The control signal generation circuit includes a band-pass filter for filtering an input signal, a DSP (signal processing) unit for controlling a signal that has passed through the band-pass filter, and a light irradiation output unit using a near-infrared LED for irradiating the head. The DSP unit has a feedback function for matching a phase of a PWM output for controlling the light irradiation output unit, in synchronism with the subject brain waves.