QS Study

Somatic Sensation is the nervous mechanisms that collect sensory information from the body. Sensations arising from the skin such as touch, pressure, cold, warmth, and pain and from the muscles, tendons, and joints such as the position of the limbs and pain are known as somatic sensations. It is the components of the central and peripheral nervous systems that receive and interpret sensory information from organs in the joints, ligaments, muscles, and skin. It is not localized in the head as our vision, hearing, taste, and smell, but rather is distributed throughout the entire body.

Classification –

Three physiologic types –

(1) Mechanoreceptive Senses: consist of –

Tactile sense such as

  • Touch,
  • Vibration,
  • Pressure,
  • Tickle.

Position Senses –

  • Static position
  • Kinesthetic or dynamic movement sensation.

(2) Thermoreceptive senses: Detect

  • Heat and Cold

(3) Nociceptive Sense: Detect pain.

Other Classification

  • Exteroceptive sensation: From the surface of the body.
  • Proprioceptive sensations:g., Position sensation, pressure sensation.
  • Enteroceptive (viseral) Sensations: From internal organ.
  • Deep sensation: From deep tissues, such as fasciae, muscles, and bone.