The anesthetic ketamine could be a game changer for treating severe depression, but there are still many questions about how the drug works, including how it affects the brain’s cells and circuits.

Using a virtual reality setup, the team fixed a larval zebrafish fish in place and showed it different visual patterns. The first 10 seconds show the fish at rest. When the fish sees a pattern ...

The decades-old anesthetic ketamine could be a game changer for treating severe depression, but there are still many questions about how the drug works, including exactly how it affects the brain's ...