eprintid: 9838 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/98/38 datestamp: 2023-11-09 16:36:29 lastmod: 2023-11-09 16:36:29 status_changed: 2023-11-09 16:29:57 type: conference_item metadata_visibility: show creators_name: Ung, W.C. creators_name: Meriaudeau, F. creators_name: Tang, T.B. title: Optimizing Mental Workload by Functional Near-Infrared Spectroscopy Based Dynamic Difficulty Adjustment ispublished: pub keywords: dysthymia; human; near infrared spectroscopy; task performance; workload, Humans; Mental Fatigue; Spectroscopy, Near-Infrared; Task Performance and Analysis; Workload note: cited By 4; Conference of 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018 ; Conference Date: 18 July 2018 Through 21 July 2018; Conference Code:141674 abstract: Gains of cognitive training may be eliminated due to mental fatigue. This paper reports the design and implementation of a functional near-infrared spectroscopy (fNIRS) - dynamic difficulty adjustment (DDA) system. A total of 25 healthy volunteers underwent two training sessions - one with fixed difficulty level of training (FDT) and one with neurofeedback training (NFT) using our fNIRS-DDA system. The workload in each training session was assessed using the National Aeronautics and Space Administration Task Load Index (NASA-TLX). Whilst sustaining mental task performance, the drop in oxygenation level observed in NFT subjects might indicate mental fatigue as they received higher NASA-TLX scores, especially in both mental demand and frustration subscales. In contrast, the oxygenation levels remained almost constant by NFT subjects throughout the experiment. This suggests that the proposed fNIRS-DDA system aided the participants in avoiding mental fatigue. Future studies will investigate if the system may prevent the progression of Alzheimer's disease. © 2018 IEEE. date: 2018 publisher: Institute of Electrical and Electronics Engineers Inc. official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056665616&doi=10.1109%2fEMBC.2018.8512501&partnerID=40&md5=97b47a4539fd6ece973eab3e92ea2442 id_number: 10.1109/EMBC.2018.8512501 full_text_status: none publication: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS volume: 2018-J pagerange: 1522-1525 refereed: TRUE isbn: 9781538636466 issn: 1557170X citation: Ung, W.C. and Meriaudeau, F. and Tang, T.B. (2018) Optimizing Mental Workload by Functional Near-Infrared Spectroscopy Based Dynamic Difficulty Adjustment. In: UNSPECIFIED.