PSYB55H3 Chapter Notes - Chapter 3.6: Transcranial Magnetic Stimulation, Subthalamic Nucleus, Basal Ganglia
Document Summary
When patients have the corpus callosum fibers severed, this is done thru a callostomy operation, also known as the split-brain procedure, deep-brain stimulation (dbs) is when there is electrical stimulation of brain structures via an implanted electrode. Stimulation of the subthalamic nucleus, one of the nuclei of the basal ganglia, is used as a treatment for parkinson"s disease. Research involving patients w/ neurological disorders is used to examine structure- function relationships. Single and double dissociations can provide evidence that damage to a particular brain region may result in a selective deficit of a certain cognitive operation. Surgical procedures have been used to treat neurological disorders such as epilepsy or parkinson"s disease. Studies conducted in patients before and after surgery have provided unique opportunities to study brain-behaviour relationships. A strong electrical current is rapidly generated in a coil placed over the targeted region. This current generates a magnetic field that causes the neurons in the underlying region to discharge.
