Conditions That Cause Confabulation

Split-Brain Syndrome

The human brain is naturally divided into two separate hemispheres with separate functions, but it normally has a bundle of nerves linking the two sides of the brain, allowing them to communicate. If the connective nerves are severed in an injury, damaged in a stroke, or harmed by a tumor, an individual can end up with split-brain syndrome. This syndrome makes it very hard to manage coordination and participate in tasks requiring simultaneous use of both parts of the brain. Technically, this is not a type of memory loss, because all memories are retained in the brain. However, it is hard for the brain to properly access memories in response to certain types of stimuli. Since the brain uses the left hemisphere for language, patients with split-brain syndrome struggle to discuss memories reliant on information the right hemisphere processes. Their brain may respond to this issue by trying to come up with confabulated memories when they need to discuss something.

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