PMID- 11755694
DA - 20011228
IS - 0166-4328
VI - 128
IP - 1
DP - 2002 Jan 7
TI - Spaced training facilitates long-term retention of place navigation in adult but not in adolescent rats.
PG - 103-8 AB - Young and adult Long Evans rats were tested in the water maze according to two different procedures: half of the subjects were given one session of four trials a day for 6 days, whereas the other subjects had the same amount of training massed in 1 day. For both conditions, a 14-day retention interval was then introduced to test long-term memory. This was followed by a four-trial reversal session. All groups showed a significant learning curve, but escape latencies were shorter for the adult than for the young rats, without differential effect of the training procedure. A first probe trial (PT1) confirmed similar accurate short-term retention in all the groups. But unimpaired long-term memory was only seen in the adult rats trained with the spaced procedure. The young rats trained over 1 day also showed some retention of the platform location after 14 days, but not the other two groups. Reversal acquisition of the new platform location was rapid in the four groups. These results indicate that although accurate short-term spatial memory in the water maze is seen after a 1-day massed training in both age groups, unimpaired long-term retention is only observed in adult rats trained with 24-h inter-session intervals.
AD - Institute of Physiology, University of Lausanne, Rue du Bugnon 7, 1005,
Lausanne, Switzerland
FAU - Spreng, Matthieu
AU - Spreng M
FAU - Rossier, Jerome
AU - Rossier J
FAU - Schenk, Francoise
AU - Schenk F
LA - eng
PT - Journal Article
CY - Netherlands
TA - Behav Brain Res
JID - 8004872
SB - IM
EDAT- 2002/01/05 10:00
MHDA- 2002/01/05 10:00
AID - S0166432801002662 [pii]
PST - ppublish
SO - Behav Brain Res 2002 Jan 7;128(1):103-8.