Final answer:
Vibration is the massage movement described as a highly stimulating, shaking movement, used to relax muscles and stimulate nerves.
Step-by-step explanation:
A highly stimulating, shaking movement describes the massage movement known as vibration. This technique involves the therapist using rapid movements to shake the body and is typically employed to relax muscles, stimulate nerves, and invigorate the body. The other massage movements listed do not match the description of a highly stimulating, shaking movement. Friction is a series of deep pressure movements used to warm the muscles, effleurage consists of light, long, and stroking movements typically at the start and end of a massage, and tapotement is a rhythmic percussion, usually applied with the edge of a hand or a closed fist.