Peripheral Nerve Stimulation Encoding for Single-Channel Haptics
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Solution Overview
Problem
Existing peripheral nerve stimulation systems face limitations in optimizing sensory feedback due to restricted bandwidth and overlap of perceived sensations, particularly in non-invasive methods, leading to reduced control and habituation issues.
Innovation Solution
The method involves modulating both the intensity and frequency of peripheral nerve stimulation by segmenting the stimulation into burst periods and interburst intervals, using electrodes to provide distinct sensory feedback through multidimensional encoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-invasive peripheral nerve stimulation is used, then ease of operation is improved, but bandwidth and control are reduced
Solution Approach 1:
The patent segments the stimulation signal into multiple independent dimensions: envelope amplitude (intensity), carrier frequency (pulsing rate), and temporal pattern (burst structure). This segmentation allows each dimension to be independently modulated, effectively increasing the bandwidth and information capacity of non-invasive stimulation systems while maintaining ease of operation.
Solution Approach 2:
The patent introduces multiple stimulation dimensions beyond simple intensity control, including temporal frequency modulation and envelope amplitude modulation. This dimensional expansion transforms a one-dimensional control system into a multi-dimensional system, significantly increasing adaptability and versatility without compromising the non-invasive nature of the stimulation.
2Use of energy by moving object
If stimulation intensity is increased, then sensory feedback strength is improved, but habituation occurs
Solution Approach 1:
The patent employs periodic modulation of the stimulation envelope amplitude and carrier frequency to create varied temporal patterns. This periodic variation prevents the nervous system from adapting to a constant stimulus, thereby reducing habituation while maintaining effective sensory feedback strength through controlled intensity modulation.
Solution Approach 2:
The patent implements dynamic modulation of stimulation parameters including variable envelope amplitudes and frequency shifts. This dynamic approach allows the system to adapt stimulation intensity in real-time, preventing habituation by continuously varying the stimulus characteristics while maintaining effective sensory feedback.
3Device complexity
If multiple sensations are delivered through single channel, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent merges multiple sensation types (intensity, frequency, temporal pattern) into a single stimulation channel by modulating different parameters of the same electrical signal. This combining approach reduces device complexity by eliminating the need for multiple independent stimulation channels while maintaining the ability to deliver distinct sensory information through parameter modulation.
Solution Approach 2:
The patent uses parameter modulation techniques where different stimulation dimensions (envelope amplitude, carrier frequency, burst duration) are varied to encode multiple sensations. This parameter-based encoding allows a single channel to convey multiple types of sensory information with sufficient precision by systematically varying physical parameters of the stimulation signal.
Data Source
AI summary
Embodiments pertain to methods of optimizing peripheral nerve stimulation in a subject by stimulating a peripheral nerve of the subject, where the stimulation includes modulating an intensity and frequency of the stimulation; and receiving sensory feedback from the subject after the stimulation. Additional embodiments pertain to systems and computing devices for optimizing peripheral nerve stimulation in a subject in accordance with the methods of the present disclosure.