Complex sentence: The full syndrome rarely, if ever, develops in humans, but parts of it are often noted in patients with extensive bilateral temporal damage caused by herpes, encephalitis, and dementias of degenerative or post-traumatic etiologies.
Split into simpler sentences: The full syndrome rarely, if ever, develops in humans. However, parts of it are often noted in patients with extensive bilateral temporal damage caused by herpes, encephalitis, and dementias of degenerative or post-traumatic etiologies.