The purpose of this study is to understand the neural mechanisms that support real world spatial navigation in humans using deep brain recordings and stimulation during virtual reality (VR), augmented reality, and real world memory tasks. We will determine the cognitive (i.e., memory) and behavioral (i.e., body, head, eye position and movement) factors that modulate deep brain activity and the consequent effects of memory-enhancing deep brain stimulation.

Inclusion Criteria:

• 12 years of age or older and has undergone RNS system placement
• Willing to provide informed consent and participate the study
• Ability to read and write English fluently

Exclusion Criteria:

• Unwilling to provide informed consent

The data collected for this research represent a valuable resource to the scientific community, and the PIs will make them accessible to others, while respecting the special needs for confidentiality. All data will be anonymized before being provided to the scientific community. Researchers can also request access to the data under collaborative and co-authorship agreements prior to the end of the funding period or before publication. The results from the proposed project will also be shared at scientific meetings (local, national and international) as well via published manuscripts.

All data will be provided by the time publication occurs or when the proposed funding period has ended.

Researchers can request access to the data under collaborative and co- authorship agreements prior to the end of the funding period or before publication.