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Scientists discover speedometer in brain
Researchers have discovered how the brain keeps pace with your speed while driving or finding your destination. \"The faster we move, the less time the brain has to take in environmental cues and to associate them with a location on our memorised spatial map. Our perception, therefore, has to keep pace with the speed of movement so that we remember the right way to go,\" explained lead researcher Stefan Remy from University of Bonn in Germany.
London: Researchers have discovered how the brain keeps pace with your speed while driving or finding your destination. "The faster we move, the less time the brain has to take in environmental cues and to associate them with a location on our memorised spatial map. Our perception, therefore, has to keep pace with the speed of movement so that we remember the right way to go," explained lead researcher Stefan Remy from University of Bonn in Germany.
But how does the brain actually know how fast a movement is? Previously, there was no answer to this question. Now, Remy and his colleagues have decoded the mechanism. For this, they stimulated specific areas within mouse brain and recorded the ensuing brain activity and the mice's locomotion.
"We have identified the neural circuits in mice that link their spatial memory to the speed of their movement. This interplay is an important foundation for a functioning spatial memory," Remy said. The cells in question are located in the "medial septum", a part of the brain directly connected to the hippocampus.
They make up a relatively small group comprising a few thousand cells. They gather information from sensory and locomotor systems, determine the speed of movement and transmit this information to the hippocampus, Remy explained.
