Why Does Touch Feel Good?
Humans and other animals use touch to communicate, explore their environment, heal, learn, sense danger, and more. On a molecular level, it is the least understood of all the senses. While there are several types of touch-sensor neurons, it is not known how these neurons respond to force.1 Our ability to sense gentle touch is known to develop early and remain ever-present in our lives, yet, until now, scientists have not known exactly how humans and other organisms perceive such sensations.2