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. 2021 Feb 26;11:4783. doi: 10.1038/s41598-021-83837-2

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© The Author(s) 2021, corrected publication 2021

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Experimental setup for task showing a participant in final posture. Central diode of the bar was placed exactly in front of participants’ right shoulder. Participants were asked to point their index finger, with extended elbow, at the central diode whenever it was turned on.