GPS Brain Cells Seen in Pigeons

Source: 
— BBC News

Researchers have spotted a group of 53 cells within pigeons' brains that respond to the direction and strength of the Earth's magnetic field. The question of how birds navigate using - among other signals - magnetic fields is the subject of much debate. These new "GPS neurons" seem to show how magnetic information is represented in birds' brains. However, the study reported by Science leaves open the question of how they actually sense the magnetic field.

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