The Other Senses: Learn It 4—The Vestibular Sense

The Vestibular Sense, Proprioception, and Kinesthesia

Every time you stand upright, walk across a room, or reach for your coffee without looking, several sensory systems work together to guide your movements and keep you balanced. Three of these systems—the vestibular sense, proprioception, and kinesthesia—provide your brain with constant feedback about motion, balance, and body position.

The Vestibular Sense: Balance and Orientation

The vestibular sense (also known as the vestibular system) contributes to our ability to maintain balance and body posture. As Figure 1 shows, the major sensory organs (utricle, saccule, and the three semicircular canals) of this system are located next to the cochlea in the inner ear.

The vestibular organs are fluid-filled and have hair cells, similar to the ones found in the auditory system, which respond to movement of the head and gravitational forces. When these hair cells are stimulated, they send signals to the brain via the vestibular nerve. Although we may not be consciously aware of our vestibular system’s sensory information under normal circumstances, its importance is apparent when we experience motion sickness and/or dizziness related to infections of the inner ear (Khan & Chang, 2013).

An illustration of the vestibular system shows the locations of the three canals (“posterior canal,” “horizontal canal,” and “superior canal”) and the locations of the “urticle,” “oval window,” “cochlea,” “basilar membrane and hair cells,” “saccule,” and “vestibule.”
Figure 1. The major sensory organs of the vestibular system are located next to the cochlea in the inner ear. These include the utricle, saccule, and the three semicircular canals (posterior, superior, and horizontal).

Proprioception: Knowing Where Your Body Is

Proprioception is your brain’s ability to sense the position of your body parts relative to one another—even with your eyes closed. It provides cognitive awareness of your body’s orientation in space.

Proprioceptive information comes from specialized receptors in muscles, tendons, joints, and skin that respond to stretch, pressure, and tension (Lackner & DiZio, 2005; Proske, 2006; Proske & Gandevia, 2012). These signals travel through the spinal cord to the cerebellum and various cortical regions, which process and integrate them with visual and vestibular input.

Kinesthesia: Sensing Movement

While proprioception helps you know where your body parts are, kinesthesia helps you sense how they are moving. It involves detecting changes in muscle tension, speed, and direction of movement, giving rise to the sensation of motion itself.

Kinesthesia is key to activities that require timing and coordination—like typing, dancing, or swinging a golf club. It is more behavioral and movement-focused than proprioception, which is more about position and spatial awareness.

How These Systems Work Together

These three systems constantly communicate with one another to help you stay balanced and move smoothly:

  • The vestibular system detects changes in head movement and gravity.
  • Proprioception keeps track of body position.
  • Kinesthesia senses ongoing motion.

These sensory systems together gather information from receptors that respond to stretch and tension in muscles, joints, skin, and tendons (Lackner & DiZio, 2005; Proske, 2006; Proske & Gandevia, 2012). Proprioceptive and kinesthetic information travels to the brain via the spinal column. Several cortical regions in addition to the cerebellum receive information from and send information to the sensory organs of the proprioceptive and kinesthetic systems. Together, they form the foundation of everyday coordination—from maintaining posture to performing complex athletic movements.

Vestibular Sense, Proprioception, and Kinesthesia

Vestibular Sense, Proprioception, and Kinesthesia
Name Definition Application
Vestibular Sense Sensory system that contributes to balance and the sense of spatial orientation. You have an ear infection and frequently feel dizzy. Or if you were to experience vertigo, you might feel like your entire body was spinning in space and be unable to walk.
Proprioception The sense of the position of parts of the body, relative to other neighboring parts of the body. Focuses on the body’s cognitive awareness of movement. You step off a curb and know where to put your foot. You push an elevator button and control how hard you have to press down with your fingers.
Kinesthesia Awareness of the position and movement of the parts of the body using sensory organs in joints and muscles. Kinesthesia is a key component in muscle memory and hand-eye coordination. It is more behavioral than proprioception. You are aware of your arm movement while swinging a golf club. Focuses on the body’s movements and not on equilibrium or balance.