Information rich phase content of frequency domain functional Near Infrared Spectroscopy

Matthaios Doulgerakis, Adam Eggebrecht, Hamid Dehghani

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations


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.

Original languageEnglish
Title of host publicationNeural Imaging and Sensing 2019
EditorsLing Fu, Jun Ding, Qingming Luo
ISBN (Electronic)9781510623729
StatePublished - 2019
EventNeural Imaging and Sensing 2019 - San Francisco, United States
Duration: Feb 4 2019Feb 5 2019

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


ConferenceNeural Imaging and Sensing 2019
Country/TerritoryUnited States
CitySan Francisco


  • Diffuse Optical Tomography
  • Frequency Domain
  • Functional Imaging
  • Near Infrared Spectroscopy
  • Retinotopy


Dive into the research topics of 'Information rich phase content of frequency domain functional Near Infrared Spectroscopy'. Together they form a unique fingerprint.

Cite this