Modeling method of tactility using nerve spike pattern, tactility model and manufacturing method of tactility using nerve spike pattern

Patent metadata

Field	Value
Publication number	US-2020110467-A1
Application number	US-201916706614-A
Country	US
Kind code	A1
Filing date	Dec 6, 2019
Priority date	Jun 7, 2017
Publication date	Apr 9, 2020
Grant date	—

Abstract

The present invention relates to a method of modeling a tactile sensation using a nerve spike pattern, a tactile sensation model, and a method of generating a tactile sensation using a nerve spike pattern and may include generating a nerve spike pattern by sequentially arranging action potential spike time points of a nerve responding to a specific pressure and modeling a pressure sensation for the pressure on the basis of the generated nerve spike pattern. According to the present invention, by checking how tactile sensation information is reflected in a nerve spike pattern, it is possible to provide a method capable of modeling various tactile sensations using the nerve spike pattern.

First claim

1 . A method of modeling a tactile sensation using a nerve spike pattern, the method comprising:
generating a nerve spike pattern by sequentially arranging action potential spike time points of a nerve responding to a specific pressure; and modeling a pressure sensation for the pressure on the basis of the generated nerve spike pattern.

2 . The method of claim 1 , wherein the modeling comprises:
measuring the total number N of generated spikes and inter spike intervals (ISIs) between spike time points of the spikes on the basis of the generated nerve spike pattern; and modeling the pressure sensation through the measured total number of spikes and the measured ISIs between the spike time points.

3 . The method of claim 2 , wherein,
the measured ISIs are time-varying, and the measuring comprises functionalizing a change in the ISIs with time using an ISI measured at a specific time.

4 . The method of claim 3 , wherein,
a function obtained through the functionalizing is
y=ax 5 +b

where x indicates time and y indicates ISI between spike time points, and
the functionalizing comprises computing a and b of the function according to x and y.

5 . The method of claim 3 , wherein the functionalizing is performed separately for a plurality of time intervals obtained through division.

6 . The method of claim 4 , wherein the computing is performed separately for a plurality of time intervals obtained through division.

7 . The method of claim 1 , wherein after the modeling of the pressure sensation for the specific pressure, the generating and the modeling are repeatedly performed under pressures different from the specific pressure.

8 . A method of modeling a tactile sensation using a nerve spike pattern, the method comprising:
generating a nerve spike pattern by sequentially arranging action potential spike time points of a nerve responding to a specific vibration stimulus; and modeling a vibration sensation for the vibration stimulus on the basis of the generated nerve spike pattern.

9 . The method of claim 8 , wherein the modeling comprises:
measuring phases of the vibration stimulus where spikes are generated in the generated nerve spike pattern; and calculating spike generation probabilities for the measured phases.

10 . The method of claim 9 , wherein the measuring comprises measuring the phases through Hilbert transform.

11 . The method of claim 9 , wherein the calculating comprises:
equally dividing a phase interval ranging from 0 to 2π into a plurality of phase intervals; and calculating the probability that each of the measured phases will belong to any one of the plurality of phase intervals.

12 . The method of claim 11 , wherein the calculating comprises counting the number of phases belonging to each of the plurality of phase intervals to calculate a spike generation probability for each of the plurality of phase intervals.

13 . The method of claim 8 , wherein after the modeling of the vibration sensation for the specific vibration stimulus, the generating and the modeling are repeatedly performed for vibration stimuli different from the specific vibration stimulus.

14 . A tactile sensation model that is obtained through modeling by the method of modeling a tactile sensation using a nerve spike pattern of claim 1 .

15 . A tactile sensation model that is obtained through modeling by a method of modeling a tactile sensation using a nerve spike pattern of claim 8 .

16 . A method of generating a tactile sensation using a nerve spike pattern, the method comprising generating a nerve spike pattern corresponding to a specific pressure sensation in a tactile sensation model obtained through modeling by a method of claim 1 .

17 . The method of claim 16 , further comprising delivering a signal corresponding to the generated nerve spike pattern to a cerebrum.

18 . The method of claim 16 , wherein the generating comprises:
determining the total number of spikes of the nerve spike pattern and inter spike intervals (ISIs) between spike time points on the basis of the tactile sensation model; and arranging a number of spikes equal to the determined total number of spikes to be spaced the determined ISI apart from one another.

19 . The method of claim 18 , wherein,
in the determining, the ISIs are determined by a probability distribution having a preset mean and variance, and the mean is a time interval value corresponding to a specific time in the tactile sensation model.

20 . The method of claim 19 , wherein the probability distribution is Poisson distribution or Gamma distribution.

21 . A method of generating a tactile sensation using a nerve spike pattern, the method comprising generating a nerve spike pattern corresponding to a specific vibration sensation in a tactile sensation model obtained through modeling by a method of claim 8 .

22 . The method of claim 21 , further comprising delivering a signal corresponding to the generated nerve spike pattern to a cerebrum.

23 . The method of claim 21 , wherein the generating comprises:
determining a periodic function corresponding to the specific vibration sensation; and generating the nerve spike pattern on the basis of the determined periodic function and the tactile sensation model.

24 . The method of claim 23 , wherein the generating comprises:
determining phases of the periodic function corresponding to spikes of the nerve spike pattern on the basis of the tactile sensation model; determining spike generation probabilities for the determined phases on the basis of the tactile sensation model; and generating the nerve spike pattern on the basis of the determined phases and the determined spike generation probabilities.

25 . The method of claim 24 , wherein the generating comprises arranging the spikes according to the spike generation probabilities determined to correspond to the determined phases.

Assignees

• Ulsan Nat Inst Science & Tech Unist
• Iucf Hyu

Inventors

• Kim Sung Phil
• Park Ji Sung
• Jang Dong Pyo
• Jung Sung Jun

Classifications

• G06F3/011 Primary

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• A61B5/0051

  by applying vibrations · CPC title

• G06F3/015

  Input arrangements based on nervous system activity detection, e.g. brain waves [EEG] detection, electromyograms [EMG] detection, electrodermal response detection · CPC title

• G06F3/016 Primary

  Input arrangements with force or tactile feedback as computer generated output to the user · CPC title

• A61N1/0456

  Specially adapted for transcutaneous electrical nerve stimulation [TENS] · CPC title