Impact of Cerebellar Mass Resection on Pain Processing

Inclusion Criteria for patients: * Age 4-18 years old at the time of surgery * Resection limited to the cerebellum * Within 20 years of surgery * Good physical health excluding symptoms directly related to cerebellar resection * No cerebellar-mass directed treatment other than surgical resection Inclusion Criteria for all subjects: * Age 6-38 years old at the time of participation * No paralysis/hemiparesis * No motor deficits that would interfere with performance or required tasks (button press withdraw hand from water bath) * English speaking sufficient to comprehend and provide assent with parental assistance or consent if over the age of 18 * Ability to complete MRI without sedation Exclusion Criteria: * Claustrophobia * Significant medical (e.g. asthma, renal, cardiac, gastrointestinal or immunological) or brain- related disorders (e.g. seizures, autism, psychiatric conditions such as severe depression, psychosis) * Metallic or magnetic implants that pose a risk to the participant or to the data quality * Weight \> 285 pounds (weight limit of the fMRI table) * History of drug abuse or positive drug screen * Positive pregnancy screen * Use of antidepressants or anticonvulsants, excepting patient usage after resection * Significant alcohol history (ingestion of 5 or more glasses (\> 40 oz) of alcohol per week) * Tattoos containing metallic ink on the neck, shoulders, upper arm and head (which could heat up in the scanner, and potentially cause blistering or burning) * Cardiac pacemakers * Aneurysm clips and other vascular stents, filters, clips or other devices * Prosthetic heart valves * Other prostheses * Neuro-stimulator devices * Implanted infusion pumps * Cochlear (ear) implants * Ocular (eye) implants or known metal fragments in eyes * Exposure to shrapnel or metal filings (sheet metal workers, welders, and others) * Participants that require anesthesia to complete an MRI scan * Receipt of a medication via transdermal patch