Fig. 6. Extinction training and the ability to `boost' memory. (A) Extinction
training (E1 and E2) in the same context (hypoxic water; white bars) prevents
LTM formation. (B) Extinction training in a different context (carrot-odorant
containing hypoxic water; black bars) allows LTM formation. See text for
details. *Significant difference in number of openings from control TS1 and
TS3.