M.Maury found that when his lips were tickled, his dream-fancy interpreted the impression as of a pitch plaster being torn off his face.

An unusual pressure on any part of the body, as, for example, from contact with a fellow-sleeper, is known to give rise to a well-marked variety of dream.

Our own limbs may even appear as foreign bodies to our dream-imagination, when through pressure they become partly paralyzed.

Thus, on one occasion, I awoke from a miserable dream, in which I felt sure I was grasping somebody's hand in bed, and I was racked by terrifying conjectures as to who it might be.
When fully awake, I discovered that I had been lying on my right side, and clasping the wrist of the right arm (which had been rendered insensible by the pressure of the body) with the left hand.
In close connection with these stimuli of pressure are those of muscular movement, whether unimpeded or impeded.

We need not enter into the difficult question how far the "muscular sense" is connected with the activity of the motor nerves, and how far with sensory fibres attached to the muscular or the adjacent tissues.