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The Big Three: Visual, Vestibular, and Somatosensory Systems

Use this poster to help your patients understand the interconnected roles of the Visual, Vestibular, and Somatosensory systems in maintaining balance and coordination.

• Visual: Crucial for spatial awareness and maintaining focus as our heads move.
• Vestibular: Acts as the body’s gyroscope in the inner ear, essential for balance and orientation.
• Somatosensory: Collects data from joints and muscles to inform the brain about body position and movement.

These three systems are often disrupted by postural imbalances commonly seen in patients, leading to various symptoms and challenges.

Developed with renowned chiropractor Patrick McMahon from Syntropy Chiropractic Training, this poster pairs perfectly with our “Sensorimotor Integration” and “Posture and Health” posters for a comprehensive patient education toolkit.

*The Kirografiks logo shown in the sample images will not be printed on your poster. Only a small copyright stamp with the logo will appear in one of the bottom corners.

Shipping: 4-6 business days for US, Canada, EU, UK, Australia, New Zealand, Singapore and Hong Kong. Aprox. 5-12 business days elsewhere.


Size-recommendations: To make it as easy as possible to find frames, we recommend sizes 12x16 in, 18x24 in, 24x36 in and 36x48 in for US & Canada, and 30x40 cm, 50x70 cm, 60x90 cm and 70x100 cm for European customers. 

Unsure what size will work for your clinic? Check out our size guide


Your brain is the control center of your body, but to function effectively, it needs precise information about its whereabouts. The highest priorities for your nervous system are understanding your location in gravity and your movement relative to the environment. Without this vital information, your brain can’t adapt properly. Think of it as the Operating System of your brain—it requires clear, well-calibrated input from the “Big Three” sensory systems: Visual, Vestibular, and Somatosensory. Any sensory mismatch among these systems can lead to significant processing errors and various symptoms. Healthy output requires these three sensory systems to be well-calibrated and synchronized.


The visual system is crucial for understanding your environment. It helps you know where you are and where objects are in relation to you. Your eyes detect potential threats and allow you to focus on essential tasks, like finding food. Complex mechanisms balance the tiny muscles around our eyes, keeping our vision focused even as our head moves.


The vestibular system, located in your inner ear, acts like a gyroscope, informing your brain about your orientation relative to gravity. Proper calibration is essential; otherwise, your brain might perceive the world as tilted, leading to misalignment from head to toe. Vestibular issues can affect balance and self-perception, causing symptoms like anxiety, nausea, dizziness, motion sensitivity, and blood pressure changes.


The somatosensory system gathers information from your joints and the muscles that stabilize and move them. The most significant input comes from the antigravity extensor muscles along your body’s midline, especially in the neck. This input is crucial for the brain, but it’s also the most prone to errors. Chiropractic care is one of the best ways to ensure that all receptors around your joints are well-calibrated, helping your brain accurately know your body’s position.


12×16 in / 30×40 cm, 18×24 in / 45×60 cm, 20×28 in / 50×70 cm, 24×36 in / 60×90 cm, 28×40 in / 70×100 cm, 36×48 in (US & CANADA) / A0 '84.1 x 118.9 cm' (EUROPE & OCEANIA)


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