Examining the Reliability of Using fNIRS in Realistic HCI Settings for Spatial and Verbal Tasks
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Examining the Reliability of Using fNIRS in Realistic HCI Settings for Spatial and Verbal Tasks
Horia A. Maior,
Matthew Pike,
Sarah Sharples,
Max L. Wilson
CHI 2015 | 2015
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Abstract
Recent efforts have shown that functional near-infrared spectroscopy (fNIRS) has potential value for brain sensing in HCI user studies. While prior research has examined how common interactions like typing and using a mouse affect fNIRS measurements during verbal tasks, this study extends those findings to spatial tasks. We confirm previous work showing that verbal tasks are robust to these artefacts, but our results demonstrate that spatial tasks are differentially affected by movement and verbalisation. This research provides insights into the reliability of fNIRS as a tool for measuring mental workload in HCI contexts, helping to refine experimental design and improve real-world applications of brain-sensing technologies.