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Functional Near-Infrared Spectroscopy (fNIRS) is a new brain imaging tool that shows potential for use in the field of human computer interaction (HCI) because of its lightweight, non-invasive qualities. fNIRS could become an additional input to interfaces, by recording the user's mental state through the measure of blood flow in the brain. However, before we are able to use the tool at its full ... read morepotential, we must test its feasibility in HCI, and develop methods to accurately analyze the output. This paper will introduce fNIRS, and briefly discuss a feasibility study conducted to explore the measurement of different levels of workload. Finally, we will present future research directions that follow from this work, such as evaluating new interaction styles according to the measured mental workload, adaptive interfaces with fNIRS, and combining fNIRS with EEG.read less
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