Data Science

Image of the Week Sending the Right Signals 082117

Image of an interneuron connecting with neurons, in purple and yellow and light blue

Biosciences Imaging Group, Soton, Wellcome Images.

Found mainly in the brain and spinal cord, interneurons connect one neuron with another to pass signals, around the nervous system. When you instinctively yank your hand away from a hot stove, it’s thanks to a series of interneurons that pass along pain signals from nerve endings in your skin to motor neurons controlling the muscles in your hand. The quick work of these networkers can keep you from getting a deeper burn.

Interneurons also play a role stabilizing other neurons, keeping them from getting overexcited. For example, researchers have found that fear in mice caused by scary sounds corresponds with lowered activity in what are known as parvalbumin interneurons. This suggests that, when the mouse isn’t frightened, that peace of mind is thanks in part to the calming effect of these interneurons.

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