An image showing a mouse hair complete with nerves wrapped around the base. These nerves are responsible for being able to feel when the hair is moved and is responsible for the tickling sensation you get when you move your hand over your arm hair.Image: Hagen Wende and Carmen Birdmeier

An image showing a mouse hair complete with nerves wrapped around the base. These nerves are responsible for being able to feel when the hair is moved and is responsible for the tickling sensation you get when you move your hand over your arm hair.

Image: Hagen Wende and Carmen Birdmeier