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. 2012 Mar 6;2:305. doi: 10.1038/srep00305

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Copyright © 2012, Macmillan Publishers Limited. All rights reserved

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareALike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/

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(a) Novice surgeon's (subject ID: D002) thermo-physiological (perinasal) and observational (facial) images during execution of Task 3, Session 4, Trial 1. The corresponding perspiration (stress) signal is shown in the middle. There are multiple elevations in the signal due to excitations throughout the execution of the trial. The excitations are negative (distress), as the FACS-decoding [13] of facial expressions indicates along the timeline (bottom). The subject performed multiple attempts on most subtasks and committed a 2 mm deviation error from the rubber tube's mark on Subtask 1. (b) Experienced surgeon's (subject ID: D001) thermo-physiological (perinasal) and observational (facial) images during execution of Task 3, Session 4, Trial 3. The corresponding perspiration (stress) signal is shown in the middle. The signal intensity is low and remarkably flat; there is near absence of facial expressions; the subject's performance was flawless. This pattern was typical throughout the expert cohort.