Balance System is differentiated into~
Vestibular
Visual
Somatisensory
Tests by which we can diagnose balance - Romberg test
Hallpick test
Berg balance scale
If you want to know about COG , LOG , BOS then click this - https://youtu.be/UU5YpVQJ0BU?si=WjIkrj6-scz5eC-J
Balance is the ability to maintain ones COG Over a base of support