Information display device, biological signal measurement system and computer-readable recording medium
An information display device includes a component extraction unit configured to extract a requested component from multiple given waveforms that are cut out of multiple signal waveforms based on biological signals that are detected; and a noise component selection unit configured to accept selecting, as a noise component, a result of the extracting from multiple results of the extracting by the component extraction unit, and the noise component selection unit displays the multiple results of the extracting by the component extraction unit and times at which the specific waveforms occur.
1. An information display device comprising:
memory having computer readable instructions stored thereon; and
at least one processor configured to execute the computer readable instructions to cause the information display device to,
receive a request for component extraction from multiple signal waveforms corresponding to a plurality of detected biological signals,
extract the requested components from the multiple signal waveforms, the extracting the requested components including cutting out the requested components from the multiple signal waveforms,
display a noise removal component selection screen based on the extracted component, the noise removal component selection screen including portions of each signal waveform of the multiple signal waveforms corresponding to the multiple extracted components,
receive a user input on the noise removal component selection screen, the user input indicating a selection of a component from the multiple extracted components as a noise component of the multiple signal waveforms,
reconstruct the multiple signal waveforms by removing the selected noise component, the removing the selected noise component including sampling the portions of each signal waveform of the multiple signal waveforms corresponding to the multiple extracted components, displaying the sampled portions as points on a multi-axis graph, each axis of the multi-graph corresponding to a component of the multiple extracted components, and projecting the sampled points onto each of the multi-axis graph except for the axis corresponding to the selected noise component, the reconstructing including concatenating a portion of each signal waveform prior to the extracted noise component to a portion of each signal waveform after the extracted noise component, and
display the reconstructed multiple signal waveforms and times at which the reconstructed multiple signal waveforms occur.
2. The information display device according to claim 1 , wherein the at least one processor further causes the information display device to:
reconstruct the multiple signal waveforms by removing the selected noise component based on a desired time window for the selected noise component.
3. The information display device according to claim 2 , wherein the at least one processor further causes the information display device to:
receive a second user input indicating an adjustment of the desired time window.
4. The information display device according to claim 1 , wherein the at least one processor further causes the information display device to:
extract the requested components by performing principal component analysis or independent component analysis on the multiple signal waveforms; and
display times at which the multiple signal waveforms occur based on a component score of each extracted component.
5. The information display device according to claim 1 , wherein the at least one processor further causes the information display device to:
adjust a cut-out width of the multiple signal waveforms, the cut-out width being a time window to extract from the multiple signal waveforms;
cut out the portion of each signal waveform of the multiple signal waveforms corresponding to the time window based on the adjusted cut-out width; and
display the cut-out multiple signal waveforms.
6. The information display device according to claim 5 , wherein the at least one processor further causes the information display device to:
display a given sign at a concatenated part in the reconstructed multiple signal waveforms.
7. The information display device according to claim 5 , wherein the at least one processor further causes the information display device to:
display the multiple signal waveforms prior to the cutting-out of the selected noise components from the multiple signal waveforms.
8. The information display device according to claim 7 , wherein the at least one processor further causes the information display device to:
display times at which the multiple signal waveforms occur together with the multiple signal waveforms prior to the cutting-out of the selected noise components from the multiple signal waveforms.
9. The information display device according to claim 7 , wherein the at least one processor further causes the information display device to:
display an individual signal waveforms corresponding to a given channel in which the multiple signal waveforms tend to occur.
10. The information display device according to claim 1 , wherein the at least one processor further causes the information display device to:
display a list of individual signal waveforms in which the multiple signal waveforms occur.
11. A biological signal measurement system comprising:
a measurement device configured to measure a subject on which measurement is performed and detect a biological signal; and
the information display device according to claim 1 , the information display device configured to accept the biological signal that is detected by the measurement device.
12. A non-transitory computer-readable recording medium that contains at least one computer program, which when executed by a computer, causes the computer to:
receive a request for component extraction from multiple signal waveforms corresponding to a plurality of detected biological signals;
extract the requested components from the multiple signal waveforms, the extracting the requested components including cutting out the requested components from the multiple signal waveforms;
display a noise removal component selection screen based on the extracted component, the noise removal component selection screen including portions of each signal waveform of the multiple signal waveforms corresponding to the multiple extracted components;
receive a user input on the noise removal component selection screen, the user input indicating a selection of a component from the multiple extracted components as a noise component of the multiple signal waveforms;
reconstruct the multiple signal waveforms by removing the selected noise component, the removing the selected noise component including sampling the portions of each signal waveform of the multiple signal waveforms corresponding to the multiple extracted components, displaying the sampled portions as points on a multi-axis graph, each axis of the multi-axis graph corresponding to a component of the multiple extracted components, and projecting the sampled points onto each axis of the multi-axis graph except for the axis corresponding to the selected noise component, the reconstructing including concatenating a portion of each signal waveform prior to the extracted noise component to a portion of each signal waveform after the extracted noise component; and
display the reconstructed multiple signal waveforms of and times at which the reconstructed multiple signal waveforms occur.
13. The non-transitory computer-readable recording medium according to claim 12 , wherein the computer is further caused to:
reconstruct the multiple signal waveforms by removing the selected noise component based on a desired time window for the selected noise component.
14. The non-transitory computer-readable recording medium according to claim 12 , wherein the computer is further caused to:
extract the requested components by performing principal component analysis or independent component analysis on the multiple signal waveforms; and
display times at which the multiple signal waveforms occur based on a component score of each extracted component.
15. The non-transitory computer-readable recording medium according to claim 12 , wherein the computer is further caused to:
adjust a cut-out width of the multiple signal waveforms, the cut-out width being a time window to extract from the multiple signal waveforms;
cut out the portion of each signal waveform of the multiple signal waveforms corresponding to the time window based on the adjusted cut-out width; and
display the cut-out multiple signal waveforms.
16. The information display device according to claim 1 , wherein the multiple signal waveforms include a plurality of magneto-encephalogram signals.
17. The information display device according to claim 16 , wherein the multiple signal waveforms further include a plurality of electro-encephalogram signals.
18. The information display device according to claim 1 , wherein the at least one processor further causes the information display device to:
receive a plurality of annotation inputs on the plurality of detected biological signals from a user;
filter the plurality of annotation inputs, the filtering including removing non-noise related annotation inputs from the plurality of annotation inputs; and
display the filtered plurality of annotation inputs.
19. The non-transitory computer-readable recording medium according to claim 12 , wherein the multiple signal waveforms include a plurality of magneto-encephalogram signals and a plurality of electro-encephalogram signals.
20. The non-transitory computer-readable recording medium according to claim 12 , wherein the computer is further caused to:
receive a plurality of annotation inputs on the plurality of detected biological signals from a user;
filter the plurality of annotation inputs, the filtering including removing non-noise related annotation inputs from the plurality of annotation inputs; and
display the filtered plurality of annotation inputs.