A new study from the University of Georgia suggests people posting in Reddit’s r/selfharm community are likely seeking support for negative emotions.

A study published in Nature by researchers at Baylor College of Medicine changes the way we understand memory. Until now, memories have been explained by the activity of brain cells called neurons that respond to learning events and control memory recall. The Baylor team expanded this theory by showing that non-neuronal cell types in the brain called astrocytes – star-shaped cells – also store memories and work in concert with groups of neurons called engrams to regulate storage and retrieval of memories.