Non-invasive Deep Brain Stimulation to Improve Spatial Navigation Abilities in Individuals Following Traumatic Brain Injury

Impairments in spatial memory and spatial navigation are commonly reported amongst patients presenting post-traumatic brain injury (TBI). In this study, the investigators examine the effect of non-invasive deep brain stimulation of the hippocampal-entorhinal complex (HC-EC), a key region supporting navigation abilities, on spatial navigation performance in TBI patients. Using a virtual reality task where participants must first encode and later recall the location of objects in a virtual arena, the investigators contrast performance while active versus control stimulation is applied to the HC-EC. The investigators additionally record brain activity using electroencephalography (EEG) prior to, during, and after task performance to characterize the neural correlates of spatial navigation abilities in TBI patients, and how they are affected by stimulation.