Effects of Transcranial Magnetic Stimulation to the Cerebellum on Cognition

fMRI and TMS Analysis of Cerebellar Cognitive Function

Functional neuroimaging studies have shown that the cerebellum is active during cognitive performance. The investigators hypothesize that stimulation of the cerebellum with transcranial magnetic stimulation will produce brief changes in performance of the task, suggesting that cerebellar activation is necessary for normal cognitive function.

Inclusion Criteria:

• 19-30 years of age
• Informed consent

Exclusion Criteria:

• History of seizure or a family history of epilepsy
• History of stroke
• Presence of metal anywhere in the head except the mouth
• Presence of cardiac pacemakers
• Presence of cochlear implants
• Presence of implanted medication pump
• History of heart disease
• Presence of intracardiac lines
• Increased intracranial pressure, such as after infarctions or trauma
• Children, or outside of age range
• Pregnancy
• Currently taking tricyclic anti-depressants or neuroleptic medication
• History of head trauma
• History of respiratory disease