Counter-Phase Dichoptic Stimulation for Target-Frequency Neural Responses
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Solution Overview
Problem
Existing neural stimulation systems often fail to achieve optimal cognitive and therapeutic effects by directly targeting specific frequency bands, leading to suboptimal treatment outcomes for conditions like Alzheimer's Disease.
Innovation Solution
Implementing counter-phased or interleaved dichoptic stimulation, where separate visual stimuli are presented to each eye at frequencies less than the target frequency, such as half the target frequency, to induce a combined stimulation response at the desired frequency through non-linear neural interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct neural stimulation at target frequency is applied, then stimulation response at target frequency is achieved, but cognitive and therapeutic effects are suboptimal
Solution Approach 1:
The patent divides the stimulation approach into two separate visual stimuli presented to each eye independently. Instead of applying a single stimulation at the target frequency, the system segments the stimulation into counter-phased dichoptic stimuli at reduced frequencies (e.g., half the target frequency), which then combine through non-linear neural interactions to produce the desired target frequency response, thereby improving therapeutic efficacy.
Solution Approach 2:
The patent changes the frequency parameter of the stimulation from the target frequency to a reduced frequency (such as half the target frequency). By presenting counter-phased dichoptic stimuli at this reduced frequency, the system leverages non-linear neural responses to generate the target frequency stimulation effect, resulting in enhanced cognitive and therapeutic outcomes.
2Reliability
If counter-phased dichoptic stimulation at reduced frequency is applied, then stimulation response at target frequency is enhanced, but system complexity increases
Solution Approach 1:
The system segments the stimulation delivery into separate channels for each eye, with independent control of frequency and phase. This segmentation allows the use of reduced frequencies at the stimulus level while achieving the desired target frequency response through the non-linear integration in the visual cortex, enhancing efficacy without requiring complex hardware modifications.
Solution Approach 2:
The patent employs periodic counter-phased dichoptic stimulation at a reduced frequency. By systematically alternating the phase of stimuli presented to each eye in a periodic manner, the system exploits non-linear neural interactions to generate the target frequency response, achieving enhanced stimulation efficacy through a structured temporal pattern rather than complex spatial arrangements.
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
This approach enhances the stimulation response at the target frequency, improving cognitive functions and therapeutic efficacy for conditions like Alzheimer's Disease by leveraging non-linear brain responses.
Implementation Method 1
providing counter-phased or interleaved binocular stimulation at reduced frequencies (such as half-target frequencies) produces a greater stimulation response at the target frequency as compared to providing stimulus at the target frequency, depending on the target frequency and other parameters of the stimulus
Data Source
AI summary
Systems and methods for counter-phased stimulation may include one or more processors which identify a target frequency of a stimulation response. The one or more processors may transmit one or more signals to the one or more output devices, to simultaneously provide first stimulation at a first frequency and second stimulation at a second frequency, the first frequency being different than and counterphased to the second frequency, the first stimulation and the second stimulation producing the stimulation response at the target frequency.