Article révisé par les pairs
| Résumé : | In experiment I, 15 naive female mice were observed on ten closely successive presentations with a one day old babymouse. After a 24 hour rest-interval, the same baby was presented once again. The number of subjects displaying retrieving, licking, nest-building and lactation-position was recorded for each presentation. The licking and nest-building responses fell off on the successive presentations, but good recovery occurred after the 24 hour rest-interval. At least a part of these decrements can thus be classified as short-term effects. In experiment II, another group of 15 naive females was observed, first on nine closely successive presentations with a one day old baby and, immediately afterwards, on a single presentation with a different stimulus provided by a baby that was ten days old. As in experiment I, licking and nest-building responses decreased on the successive presentations with the one day old baby, but they recovered completely when the different stimulus was presented. The decrements thus seem to be stimulus-specific. |
