Information rich phase content of frequency domain functional Near Infrared Spectroscopy

Matthaios Doulgerakis; Adam Eggebrecht; Hamid Dehghani

doi:10.1117/12.2505874

1 March 2019 Information rich phase content of frequency domain functional Near Infrared Spectroscopy

Matthaios Doulgerakis, Adam Eggebrecht, Hamid Dehghani

Proceedings Volume 10865, Neural Imaging and Sensing 2019; 108650C (2019) https://doi.org/10.1117/12.2505874
Event: SPIE BiOS, 2019, San Francisco, California, United States

Abstract

We present results for frequency domain (FD) functional Near Infrared Spectroscopy (fNIRS), where signals from the haemodynamic changes due to focal activations are detected using FD data as collected during a standard retinotopy visual stimulus paradigm. The FD system utilizes radio frequency modulated light to measure phase shift, as well as intensity attenuation, allowing the utilization of two sets of complimentary data for brain activity detection. The information content from measurements of both amplitude and phase, afforded by FD-fNIRS are presented and it is shown that utilization of phase measurement contains unique information regarding both focal activation as well as systematic responses, which could lead to signal suppression from the superficial tissues.

Conference Presentation

Citation Download Citation

Matthaios Doulgerakis, Adam Eggebrecht, and Hamid Dehghani "Information rich phase content of frequency domain functional Near Infrared Spectroscopy", Proc. SPIE 10865, Neural Imaging and Sensing 2019, 108650C (1 March 2019); https://doi.org/10.1117/12.2505874

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