To test the effects of low frequency deep rTMS using the novel HCERMJD-coil on cerebellar deficits in patients with SCA3 and to establish its safety in this population.

Investigator is anticipate that stimulation of the cerebellum with the novel HCERMJD-coil may induce significantly therapeutic effects in patients with SCA3 and will pave the way for establishing a novel and effective treatment for this disorder.

Inclusion Criteria:

• SCA3 patients aged 20 - 80 years, with detectable clinical signs and confirmed genetic diagnosis.

Exclusion Criteria:

1. Patients who have concomitant epilepsy.
2. History of seizure or heat convulsion.
3. Patients on neuroleptics.
4. Patients with dementia (MMSE<25) or any unstable medical disorder.
5. History or current unstable hypertension.
6. History of head injury or neurosurgical interventions.
7. History of any metal in the head (outside the mouth).
8. Known history of any metallic particles in the eye, implanted cardiac pacemaker, implanted neurostimulators, surgical clips (above the shoulder line) or any medical pumps.
9. History of frequent or severe headaches.
10. History of migraine.
11. History of hearing loss.
12. History of cochlear implants
13. History of drug abuse or alcoholism.
14. Pregnancy or not using a reliable method of birth control.
15. Participation in current clinical study or clinical study within 30 days prior to this study.