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. Author manuscript; available in PMC: 2020 Dec 11.
Published in final edited form as: IEEE Sens J. 2018 Oct 1;19(19):8522–8531. doi: 10.1109/jsen.2018.2872651

Fig. 4.

Fig. 4.

RTLX scores for arithmetic and N-back tasks, for difficulty levels easy, medium, hard for each task. * indicates statistical significance, * p < 0.05, **p < 0.001. Error bars: std.