Neurosurgeon Kaveh Khajavi, M.D., explains that the memory is stored in the hippocampus, which is a thumb-size area found on both sides of the brain. The hippocampus stores and retrieves memories, much like how you would use a file on a computer drive.
“When the hippocampus is injured, the mechanism does not work properly, causing serious memory loss, and in some cases, total memory loss,” says Dr. Khajavi.
“But for total memory loss to occur, both sides of the hippocampus would have to be injured.”
Dr. Khajavi confirms that it is possible to lose your entire memory, but it would be a rare occurrence.