Henry Molaison suffered from intractable epilepsy due to a bicycle accident he had when he was 7 years old. His recommended treatment was the resection of his left and right temporal lobes. His resection included the hippocampal formation, amygdaloid complex and entorhinal cortex. The surgery controlled his epilepsy but left him with anterograde amnesia. His working memory and procedural memory were left intact. He no longer could convert short-term memory into long-term memory. His procedural memory was left intact so he was able to learn new motor skills even though he couldn’t remember learning them. He also suffered retrograde amnesia. He couldn’t remember the 1-2 years before his surgery. The primary area of the brain affected by the
