Fruit Flies Plug into the Matrix

Bugs and fish don’t play video games or attend teleconferences, but they can still explore virtual reality—complete with visual effects, tastes and smells. A new system called PiVR—named after the low-cost Raspberry Pi computer that runs its software—creates working artificial environments for small animals such as zebra fish larvae and fruit flies. Developers say the system’s affordability could help expand research into animal behavior.

PiVR’s purpose is not to get these creatures plugged into the Matrix. Rather it lets scientists measure an animal’s behavior in real time while it responds to a controlled environment. The technology both provides the environment and tracks the animal within it using cameras and other sensors. This approach is useful in experiments aiming to learn more about how an external stimulus spurs the brain to perform an action. “What the tracker allows us to do is know what the animal is currently doing and then

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