A participant receiving non-invasive brain stimulation during an experiment in a laboratory setting. Credit: Nicolas Zonvi (CC-BY 4.0) Encouraging two parts of the brain to fire in sync can make people act more generously, according to research published February 10th in the open-access journal PLOS Biology . The study was led by Jie Hu of East China Normal University in China, in collaboration with researchers from the University of Zurich in Switzerland. By aligning activity between specific