?url_ver=Z39.88-2004&rft_id=10.1109%2FTNSRE.2021.3062117&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=L.G.&rft.aulast=Lim&rft.au=Lim%2C+L.G.&rft.date=2021&rft.title=IEEE+Transactions+on+Neural+Systems+and+Rehabilitation+Engineering&rft.pages=597-606&rft.atitle=Optimizing+mental+workload+estimation+by+detecting+baseline+state+using+vector+phase+analysis+approach&rft.volume=29&rft.issn=15344320&rft.genre=article