Core Insights - The Weizmann Institute of Science in Israel has developed a new research method using optogenetics to reveal the neural mechanisms controlling the attachment between infants and their parents [1][2] - The research indicates that oxytocin, previously thought to only enhance social abilities in adults, plays a significant role in the attachment process in infants [1][2] Group 1: Research Methodology - The research team utilized optogenetics to introduce specific light-sensitive proteins into the target neurons of infant mice, allowing selective "turning off" of these neurons using light without affecting natural behavior [1] - This innovative method enables researchers to observe brain activity in infant mice during specific social situations without interfering with their daily behavior [2] Group 2: Findings on Oxytocin - During separation from their mothers, infant mice exhibited increased oxytocin activity, which returned to normal upon reunion [2] - The study found that active oxytocin systems in infant mice helped them adapt to unfamiliar environments during separation, while suppressed oxytocin systems hindered their ability to cope with loneliness [2]