Figure 2
From: Infant brain activity in response to yawning using functional near-infrared spectroscopy
Results of the NIRS measurement in infants. (a) The time course of the average change in oxyhemoglobin (oxy-Hb) in 5- and 8- month- olds during the yawning movement and mouth movement conditions. The left column shows the hemodynamic changes in left temporal area, and the right column shows the hemodynamic changes in right temporal area. The thick line in graph represents the mean Z score, and broken line represent the range of ±1 standard of error of mean (SEM). On the horizontal axis, 0 represents the beginning of the presentation of both movements and 13.2 represents the end of the presentation of both movements; the vertical dashed line at 0 and 13.2 s denote the onset and offset of the test stimulus presentation, respectively. (b) Mean Z scores during the 8–14 s presentation in the left and right temporal areas. The error bars represent ±1 SEM. In yawning movement condition, the concentrations of oxy-Hb in both temporal areas were significantly greater than the chance level of 0. *p < 0.05.
