New brain zaps aim to unfreeze Parkinson's gait

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Parkinson disease (PD) with PD diagnosis based on the recent Movement Disorder Society criteria 2. PD subjects \>45 years and \<90 will be studied 3. H\&Y2-3 (early PD) subjects will be recruited 4. English speaker 5. Able to provide written consent prior to admission Exclusion Criteria: 1. The presence of other neurologic disease or neurologic findings on examination 2. Depression: Geriatric Depression Scale (GDS) score \>11 3. Evidence of a stroke or mass lesion on prior structural brain imaging (CT or MRI) 4. Are younger than 45 or older than 90 years old 5. Non-English speaker 6. Are pregnant, suspect pregnancy or are attempting to become pregnant 7. Have a pacemaker, intracardiac lines or any other medically implanted device or medicine pump 8. Have cochlear hearing implants 9. Are taking GABAergic, NDMA-receptor antagonist, or other drug known to influence neural receptors that facilitate neuroplasticity 10. Have non removable body piercings or have foreign objects in body 11. Have metal anywhere in the head that could increase a subjects risk of serious injury (not including braces, dental fillings, etc.): 1. deep brain or vagus nerve stimulator 2. aneurysm clips or coils 3. stents in neck or brain 4. implanted stimulators 5. electrodes to monitor brain activity 6. metallic implants in eyes or ears 7. shrapnel or bullet fragments in or near the head 8. facial tattoos with metallic or magnetic-sensitive ink 9. other metal devices or objects implanted in or near the head, 12. Have any of the below conditions that would put a subject at increased risk of having a seizure: 1. a personal or family history of seizure/epilepsy 2. taking prescription drugs that lower the threshold for seizures 3. recent history of excessive alcohol consumption 4. history of alcohol addiction/dependence 5. recent history of recreational drug use 6. history of drug addiction/dependence 13. Have been diagnosed with any of the following: 1. A stroke, brain hemorrhage, brain tumor, encephalitis, or multiple sclerosis 2. Alzheimer's disease 3. attention deficit disorder, schizophrenia, or manic depressive (bipolar) disorder 4. normal pressure hydrocephalus or increased intra-cranial pressure 5. diabetes requiring insulin treatment 6. any serious heart disorder or liver disease 6\. Metallic medical implants (i.e. pacemaker), foreign objects in body, non-removable body-piercings 7. Pregnancy 8. Additional exclusion criteria related to TMS: g. Metal in the cranium (mouth excluded) h. Cardiac pacemaker i. Implanted medication pump j. Implanted deep brain stimulator or vagus nerve stimulator k. Intracardiac lines l. Serious heart disease m. Increased intracranial pressure n. History of seizures o. Epileptogenic medication p. Cochlear implants q. Recent extended air travel resulting in jetlag or other sleep deprived state