Neural sleep patterns emerged at least 450 million years ago

Researchers have found that brain patterns in sleeping zebrafish are similar to those of land vertebrates, suggesting that such sleep signatures developed before aquatic and land animals diverged. Senior author Philippe Mourrain, associate professor of psychiatry and behavioral sciences, and lead author and postdoctoral scholar Louis Leung, are quoted in this piece.

The study is also highlighted in articles from:

and more!