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The purpose and goal of brain mapping is to advance the understanding of the relationship between structure and function in the human brain. Scientists in this field seek to gain knowledge of the physical processes that underlie human sensation, attention awareness and cognition. These results are immediately applicable to surgical intervention, to the design of medical interventions and to the treatment of psychological and psychiatric disorders.
Functional brain mapping may be performed using a trans-cranial magnetic stimulation device. This coil generates magnetic field impulses which stimulate underlying nerve cells in a focused volume. By measuring responses to the stimulations and tracking the position of the coil relative to the MR scan we generate functional maps of the brain in a low-cost, non-invasive, and accurate manner. The LEDs placed on the face in the image below are used to track the position of the patient during the procedure, so that the patient's head does not have to be fixed.