Editing Atkinson–Shiffrin memory model (section)

==Evidence for distinct stores==
At the time of the original publication there was a schism in the field of memory on the issue of a single process or dual-process model of memory, the two processes referring to short-term and long-term memory.<ref name=Melton1963 /><ref name=Postman1964 /> Atkinson and Shiffrin cite hippocampal lesion studies as compelling evidence for a separation of the two stores.<ref name=AtkinsonShiffrin1968 /> These studies showed that patients with bilateral damage to the hippocampal region had nearly no ability to form new long-term memories though their short-term memory remained intact.<ref name=Milner1966 /> One may also be familiar with similar evidence found through the study of [[Henry Molaison]], famously known as H.M., who underwent a severe bilateral medial temporal lobectomy which removed most of his hippocampal regions.  These data suggest that there is indeed a clear separation between the short-term and long-term stores.