Effective Signal Extraction Algorithm for Cerebral Blood Oxygen Based on Dual Detectors
Functional near-infrared spectroscopy (fNIRS) can dynamically respond to the relevant state of brain activity based on the hemodynamic information of brain tissue. The cerebral cortex and gray matter are the main regions reflecting brain activity. As they are far from the scalp surface, the accuracy...
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| Format: | Article |
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MDPI AG
2024-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/6/1820 |
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| author | Zhiming Xing Zihao Jin Shuqi Fang Xiumin Gao |
| author_facet | Zhiming Xing Zihao Jin Shuqi Fang Xiumin Gao |
| author_sort | Zhiming Xing |
| collection | DOAJ |
| description | Functional near-infrared spectroscopy (fNIRS) can dynamically respond to the relevant state of brain activity based on the hemodynamic information of brain tissue. The cerebral cortex and gray matter are the main regions reflecting brain activity. As they are far from the scalp surface, the accuracy of brain activity detection will be significantly affected by a series of physiological activities. In this paper, an effective algorithm for extracting brain activity information is designed based on the measurement method of dual detectors so as to obtain real brain activity information. The principle of this algorithm is to take the measurement results of short-distance channels as reference signals to eliminate the physiological interference information in the measurement results of long-distance channels. In this paper, the performance of the proposed method is tested using both simulated and measured signals and compared with the extraction results of EEMD-RLS, RLS and fast-ICA, and their extraction effects are quantified by correlation coefficient (R), root-mean-square error (RMSE), and mean absolute error (MAE). The test results show that even under low SNR conditions, the proposed method can still effectively suppress physiological interference and improve the detection accuracy of brain activity signals. |
| first_indexed | 2024-04-24T17:51:10Z |
| format | Article |
| id | doaj.art-f550fc2411c34a89a453615cf8b209bd |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-24T17:51:10Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f550fc2411c34a89a453615cf8b209bd2024-03-27T14:03:53ZengMDPI AGSensors1424-82202024-03-01246182010.3390/s24061820Effective Signal Extraction Algorithm for Cerebral Blood Oxygen Based on Dual DetectorsZhiming Xing0Zihao Jin1Shuqi Fang2Xiumin Gao3School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200020, ChinaSchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200020, ChinaSchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200020, ChinaSchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200020, ChinaFunctional near-infrared spectroscopy (fNIRS) can dynamically respond to the relevant state of brain activity based on the hemodynamic information of brain tissue. The cerebral cortex and gray matter are the main regions reflecting brain activity. As they are far from the scalp surface, the accuracy of brain activity detection will be significantly affected by a series of physiological activities. In this paper, an effective algorithm for extracting brain activity information is designed based on the measurement method of dual detectors so as to obtain real brain activity information. The principle of this algorithm is to take the measurement results of short-distance channels as reference signals to eliminate the physiological interference information in the measurement results of long-distance channels. In this paper, the performance of the proposed method is tested using both simulated and measured signals and compared with the extraction results of EEMD-RLS, RLS and fast-ICA, and their extraction effects are quantified by correlation coefficient (R), root-mean-square error (RMSE), and mean absolute error (MAE). The test results show that even under low SNR conditions, the proposed method can still effectively suppress physiological interference and improve the detection accuracy of brain activity signals.https://www.mdpi.com/1424-8220/24/6/1820fNIRSGA-VMDdual detectorsinformation extractionhemoglobin |
| spellingShingle | Zhiming Xing Zihao Jin Shuqi Fang Xiumin Gao Effective Signal Extraction Algorithm for Cerebral Blood Oxygen Based on Dual Detectors Sensors fNIRS GA-VMD dual detectors information extraction hemoglobin |
| title | Effective Signal Extraction Algorithm for Cerebral Blood Oxygen Based on Dual Detectors |
| title_full | Effective Signal Extraction Algorithm for Cerebral Blood Oxygen Based on Dual Detectors |
| title_fullStr | Effective Signal Extraction Algorithm for Cerebral Blood Oxygen Based on Dual Detectors |
| title_full_unstemmed | Effective Signal Extraction Algorithm for Cerebral Blood Oxygen Based on Dual Detectors |
| title_short | Effective Signal Extraction Algorithm for Cerebral Blood Oxygen Based on Dual Detectors |
| title_sort | effective signal extraction algorithm for cerebral blood oxygen based on dual detectors |
| topic | fNIRS GA-VMD dual detectors information extraction hemoglobin |
| url | https://www.mdpi.com/1424-8220/24/6/1820 |
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