Paper at: http://jeb.biologists.org/content/early/2013/06/27/jeb.08780...

Folks might be interested in learning more about the original 1960s study referenced in the current paper

- http://everything2.com/title/The+ability+of+planarian+worms+...

- http://www.apa.org/monitor/2010/06/memory-transfer.aspx