During social interactions, human and dog brain activity becomes synchronized, with mutual gazing and petting enhancing this connection. Over five days, synchronization between human-dog pairs increased with familiarity, suggesting a leader-follower dynamic, where humans lead and dogs follow.

Researchers developed a highly selective fluorescent probe to image serotonin in cells and animal models, shedding light on its role in depression. The study revealed that while serotonin levels in normal and “depressed” cells are similar, depressive cells release significantly less serotonin.

A new study reveals that chronic and new anxiety are linked to a higher risk of dementia, while resolved anxiety shows no such association. Following 2,132 Australian individuals for 10 years, researchers found that chronic and new anxiety increased dementia risk by 2.8 and 3.2 times, respectively. Those whose anxiety began before age 70 faced even greater risks. The findings suggest that addressing anxiety could help prevent dementia.