Those with damage to regions of the brain involved in visual processing, such as the occipital lobes, may develop amnesia. The episodic content of autobiographical memories is predominantly encoded in the form of visual images. If the ability to generate visual images is compromised or lost then access to specific details of the past held in episodic images is lost as well. When life events or episodic memories are encoded in the brain, they are in the form of pictures or visual images. They develop amnesia since they can no longer bring these visual images of the past to mind.