Speech Motor Learning and Retention (Master Protocol)

The overall goal of this research is to test a new model of speech motor learning, whose central hypothesis is that learning and retention are associated with plasticity not only in motor areas of the brain but in auditory and somatosensory regions as well.

Inclusion Criteria: * Fluent English speakers * Right-handed * Normal hearing * No speech disorder or reading disability Exclusion Criteria: * Cardiac pacemaker * Aneurysm clip * Heart or Vascular clip * Prosthetic valve * Metal implants * Metal in brain, skull, or spinal cord * Implanted neurostimulator * Medication infusion device * Cochlear implant or tinnitus (ringing in ears) * Personal and/or family history of epilepsy or other neurological disorders or history of head concussion * Psychoactive medications * Pregnancy