Sunday, 29 April 2012

Magnetic fields light up 'GPS neurons', scientists say

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.
David Dickman of the Baylor College of Medicine in the US set up an experiment in which pigeons were held in place, while the magnetic field around them was varied in its strength and direction.

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