Riken Research: Total Recall: neuroscience rewritten: long term memories form instantly. Summer 2017.

RIKEN is one of Japan's most imporant scientific research organizations, distributed over several campuses. The research issue of their magazine in Hawking's office dates from Summer 2017.

The entire issue is currently available online:

https://www.riken.jp/medialibrary/riken/pr/publications/riken_research/2017/rr201706.pdf

Most of the journals and magazines in Stephen Hawking's office were transient items, which would have entered upon publication, and gradually circulated out in a relatively short time frame. The vast majority of such items in the office date from the last years of Stephen's life, from 2015 onwards, and haphazardly reflect on subscriptions, affiliations and societies where he happened to be most active at that moment in time.