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 ...

A new study published in Nature suggests that the neural foundations of spatial navigation—the brain's internal "GPS"—may have emerged far earlier in evolution than previously believed. The research, ...

The ability of some animals to dynamically change color to match the brightness of their surroundings is one of nature's great survival tools, allowing flatfish to blend into sandy seabeds, frogs to ...

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 ...