From: Synchronous activity of two people's prefrontal cortices during a cooperative task measured by simultaneous near-infrared spectroscopy J. Biomed. Opt. 2011;16(7):077011-077011-10. doi:10.1117/1.3602853 Figure Legend: Trial-averaged oxy-Hb time-course data for participant 1 (Exp. 1) measured with a WOT system. The data of all channels (including both the used and interpolated channels) are shown. The horizontal axis represents time, and the vertical axis represents the oxy-Hb change. The start time of counting is t = 1 s. Date of download: 11/12/2016 Copyright © 2016 SPIE. All rights reserved.