Research Papers: Imaging

Impact of communicative head movements on the quality of functional near-infrared spectroscopy signals: negligible effects for affirmative and negative gestures and consistent artifacts related to raising eyebrows

[+] Author Affiliations
Joana Bisol Balardin

Universidade Federal do ABC, Center of Mathematics Computing and Cognition, São Bernardo do Campo, Brazil

Instituto do Cérebro, Hospital Israelita Albert Einstein, São Paulo, Brazil

Guilherme Augusto Zimeo Morais

NIRx Medizintechnik GmbH, Berlin, Germany

Rogério Akira Furucho, Lucas Romualdo Trambaiolli, João Ricardo Sato

Universidade Federal do ABC, Center of Mathematics Computing and Cognition, São Bernardo do Campo, Brazil

J. Biomed. Opt. 22(4), 046010 (Apr 28, 2017). doi:10.1117/1.JBO.22.4.046010
History: Received October 3, 2016; Accepted April 10, 2017
Text Size: A A A

Abstract.  Functional near-infrared spectroscopy (fNIRS) is currently one of the most promising tools in the neuroscientific research to study brain hemodynamics during naturalistic social communication. The application of fNIRS by studies in this field of knowledge has been widely justified by its strong resilience to motion artifacts, including those that might be generated by communicative head and facial movements. Previous studies have focused on the identification and correction of these artifacts, but a quantification of the differential contribution of common communicative movements on the quality of fNIRS signals is still missing. We assessed the impact of four movements (nodding head up and down, reading aloud, nodding head sideways, and raising eyebrows) performed during rest and task conditions on two metrics of signal quality control: an estimative of signal-to-noise performance and the negative correlation between oxygenated and deoxygenated hemoglobin (oxy-Hb and deoxy-Hb). Channel-wise group analysis confirmed the robustness of the fNIRS technique to head nodding movements but showed a large effect of raising eyebrows in both signal quality control metrics, both during task and rest conditions. Reading aloud did not disrupt the expected anticorrelation between oxy-Hb and deoxy-Hb but had a relatively large effect on signal-to-noise performance. These findings may have implications to the interpretation of fNIRS studies examining communicative processes.

Figures in this Article
© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Joana Bisol Balardin ; Guilherme Augusto Zimeo Morais ; Rogério Akira Furucho ; Lucas Romualdo Trambaiolli and João Ricardo Sato
"Impact of communicative head movements on the quality of functional near-infrared spectroscopy signals: negligible effects for affirmative and negative gestures and consistent artifacts related to raising eyebrows", J. Biomed. Opt. 22(4), 046010 (Apr 28, 2017). ; http://dx.doi.org/10.1117/1.JBO.22.4.046010


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement


 

  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.