Figure 4
From: Gender composition mediates social facilitation effect in co-action condition

(A) Power of the theta band in the frontal lobe as a function of task difficulty and social presence. (B) power of the alpha band in the frontal lobe was smallest in the presence of an OC, larger in the presence of an SC, and largest in working alone condition. (C) power of the beta band in the frontal lobe was largest in the presence of an OC, smaller in the presence of an SC, and smallest in working alone condition. (D) Changes in EEG spectral power in the frontal lobe. Social presence (working alone, working with an SC, and working with an OC) induced changes in EEG spectral power during easy tasks and difficult tasks. Error bars are ± 1 SE. ***P < 0.0001, **P < 0.001, *P < 0.05.