Figure 3.
Intact working memory and impaired long-term memory. (A) The number of trials needed to correctly repeat back a string of digits as a function of string length. MTL patient H.M. succeeded at six digits in his first try but could not succeed at repeating back seven digits even after 25 attempts with the same string. (B) The number of trials needed to learn the locations of different numbers of objects for MTL patient G.P. and controls. G.P. succeeded easily with one, two, and three objects but could not reproduce the locations of four objects, even after 10 attempts with the same display. Note that in both cases, the patients failed at about the point when controls began to make their first errors (adapted from Squire and Wixted 2011 [with permission from Annual Reviews]).