scholarly journals Cross Correlation Analysis of Multi-Channel Near Infrared Spectroscopy

2016 ◽  
Author(s):  
Raul Fernandez Rojas ◽  
Xu Huang ◽  
Keng Liang Ou ◽  
Jehu Lopez-Aparicio
Keyword(s):  
Infrared Spectroscopy ◽  
Correlation Analysis ◽  
Near Infrared Spectroscopy ◽  
Cross Correlation ◽  
Near Infrared ◽  
Cross Correlation Analysis

scholarly journals Cross-Correlation of Motor Activity Signals from dc-Magnetoencephalography, Near-Infrared Spectroscopy, and Electromyography

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Tilmann H. Sander ◽  
Stefanie Leistner ◽  
Heidrun Wabnitz ◽  
Bruno-Marcel Mackert ◽  
Rainer Macdonald ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Cross Correlation ◽  
Near Infrared ◽  
Vascular Response ◽  
Neuronal Responses ◽  
Finger Movements ◽  
Time Resolved ◽  
Cortical Responses ◽  
Movement Sequence

Neuronal and vascular responses due to finger movements were synchronously measured using dc-magnetoencephalography (dcMEG) and time-resolved near-infrared spectroscopy (trNIRS). The finger movements were monitored with electromyography (EMG). Cortical responses related to the finger movement sequence were extracted by independent component analysis from both the dcMEG and the trNIRS data. The temporal relations between EMG rate, dcMEG, and trNIRS responses were assessed pairwise using the cross-correlation function (CCF), which does not require epoch averaging. A positive lag on a scale of seconds was found for the maximum of the CCF between dcMEG and trNIRS. A zero lag is observed for the CCF between dcMEG and EMG. Additionally this CCF exhibits oscillations at the frequency of individual finger movements. These findings show that the dcMEG with a bandwidth up to 8 Hz records both slow and faster neuronal responses, whereas the vascular response is confirmed to change on a scale of seconds.

Calibration transfer of near-infrared spectroscopy by canonical correlation analysis coupled with wavelet transform

The Analyst ◽  
2017 ◽  
Vol 142 (12) ◽  
pp. 2229-2238 ◽  
Author(s):  
Jun Bin ◽  
Xin Li ◽  
Wei Fan ◽  
Ji-heng Zhou ◽  
Cheng-wei Wang
Keyword(s):  
Infrared Spectroscopy ◽  
Wavelet Transform ◽  
Correlation Analysis ◽  
Canonical Correlation Analysis ◽  
Near Infrared Spectroscopy ◽  
Canonical Correlation ◽  
Near Infrared ◽  
Multivariate Calibration ◽  
Calibration Transfer

A novel calibration transfer approach, WTCCA, combining the advantages of WT and CTCCA has been proposed for NIRS multivariate calibration.

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