There has been a story written about a lady who suffered a traumatic experience. She went into a coma, never expected to return to reality as we know it. Her reality became a recollection of stories written by a well-known author of many years past. Her mind lived in the stories she had read. This was discovered because she did occasionally speak, but not in conversation or in response. She spoke sentences from the stories, never more, never less.
The memory is complex, often misunderstood and underrated. People who suffer from coma, psychological complexities, children with learning disabilities, and people who get amnesia are often a mental mystery. Amnesia confounds those who watch a friend or loved one who suffers from it.
No one can ever really know how much someone in a coma can hear, understand, and remember. Children are often misunderstood before being diagnosed with a particular learning disability. Someone with a brain tumor may have plenty of information stored in their memories that eventually becomes too muddled to process. They lose their ability to make sense of the memories they contain.