Single-trial event-related potential extraction through one-unit ICA-with-reference.
Objective: In recent years, ICA has been one of the more popular methods for extracting event-related potential (ERP) at the single-trial level. It is a blind source separation technique that allows the extraction of an ERP without making strong assumptions on the temporal and spatial characteristic...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/47856 |
| _version_ | 1848757949523034112 |
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| author | Lee, Wee Lih Tan, Tele Falkmer, Torbjorn Leung, Y. |
| author_facet | Lee, Wee Lih Tan, Tele Falkmer, Torbjorn Leung, Y. |
| author_sort | Lee, Wee Lih |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Objective: In recent years, ICA has been one of the more popular methods for extracting event-related potential (ERP) at the single-trial level. It is a blind source separation technique that allows the extraction of an ERP without making strong assumptions on the temporal and spatial characteristics of an ERP. However, the problem with traditional ICA is that the extraction is not direct and is time-consuming due to the need for source selection processing. In this paper, the application of an one-unit ICA-with-Reference (ICA-R), a constrained ICA method, is proposed. Approach: In cases where the time-region of the desired ERP is known a priori, this time information is utilized to generate a reference signal, which is then used for guiding the one-unit ICA-R to extract the source signal of the desired ERP directly. Main results: Our results showed that, as compared to traditional ICA, ICA-R is a more effective method for analysing ERP because it avoids manual source selection and it requires less computation thus resulting in faster ERP extraction. Significance: In addition to that, since the method is automated, it reduces the risks of any subjective bias in the ERP analysis. It is also a potential tool for extracting the ERP in online application. |
| first_indexed | 2025-11-14T09:36:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-47856 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:36:13Z |
| publishDate | 2016 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-478562017-10-16T03:32:26Z Single-trial event-related potential extraction through one-unit ICA-with-reference. Lee, Wee Lih Tan, Tele Falkmer, Torbjorn Leung, Y. Objective: In recent years, ICA has been one of the more popular methods for extracting event-related potential (ERP) at the single-trial level. It is a blind source separation technique that allows the extraction of an ERP without making strong assumptions on the temporal and spatial characteristics of an ERP. However, the problem with traditional ICA is that the extraction is not direct and is time-consuming due to the need for source selection processing. In this paper, the application of an one-unit ICA-with-Reference (ICA-R), a constrained ICA method, is proposed. Approach: In cases where the time-region of the desired ERP is known a priori, this time information is utilized to generate a reference signal, which is then used for guiding the one-unit ICA-R to extract the source signal of the desired ERP directly. Main results: Our results showed that, as compared to traditional ICA, ICA-R is a more effective method for analysing ERP because it avoids manual source selection and it requires less computation thus resulting in faster ERP extraction. Significance: In addition to that, since the method is automated, it reduces the risks of any subjective bias in the ERP analysis. It is also a potential tool for extracting the ERP in online application. 2016 Journal Article http://hdl.handle.net/20.500.11937/47856 10.1088/1741-2560/13/6/066010 fulltext |
| spellingShingle | Lee, Wee Lih Tan, Tele Falkmer, Torbjorn Leung, Y. Single-trial event-related potential extraction through one-unit ICA-with-reference. |
| title | Single-trial event-related potential extraction through one-unit ICA-with-reference. |
| title_full | Single-trial event-related potential extraction through one-unit ICA-with-reference. |
| title_fullStr | Single-trial event-related potential extraction through one-unit ICA-with-reference. |
| title_full_unstemmed | Single-trial event-related potential extraction through one-unit ICA-with-reference. |
| title_short | Single-trial event-related potential extraction through one-unit ICA-with-reference. |
| title_sort | single-trial event-related potential extraction through one-unit ica-with-reference. |
| url | http://hdl.handle.net/20.500.11937/47856 |