In the last decade, Neuroscientists have made major advances in their quest to study the brain. They can assemble complete wiring diagrams and catalogue the brain's many cell types. They've developed electrode arrays for recording electrical activity in individual neurons and placed itty bitty microscopes on the heads of mice to visualize their brain activity. However, almost shockingly, there are no tools to precisely measure the brain's principal output -- behavior - in freely moving animals.
Animal behavior is important to a broad range of disciplines, from neuroscience and...
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