Profile: Neurocom International Inc markets computerized tools for the assessment & rehabilitation of patients with balance and mobility disorders. We offer good service & support such as advanced assessment technology, clinical training, support for business planning, program development & marketing. The type of medical tests you need will vary depending on what your physician suspects is the problem. Because there are so many possible causes, not all patients will require all tests. Dizziness or vertigo can be caused by a disturbance in a particular part of the inner ear - the vestibular system. This is the part of your balance system that provides your brain with information about changes in head movement with respect to the pull of gravity. When your vestibular system is not working properly, the result may be dizziness, vertigo, imbalance, disorientation and possibly nausea & vomiting. Some specific disorders known to cause dizziness and/or vertigo are listed below in alphabetical order.