Vestibular function tests are assessments used to evaluate the balance and spatial orientation systems of the body, primarily focusing on the inner ear and its connections to the brain. These tests help diagnose conditions that affect balance, such as vertigo or Meniere's disease. Common tests include the caloric test, which measures how the inner ear responds to temperature changes, and the head impulse test, which assesses the ability to maintain gaze during head movements. Results from these tests guide healthcare professionals in determining appropriate treatments for balance disorders.