Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5737457 | Neuroscience | 2017 | 10 Pages |
Abstract
We used Object Recognition Test (ORT) to assess in adult mice put in EE for 40Â days (EE mice) or left in standard condition (SC mice) memory retrieval of the familiar objects 9 and 21Â days after learning with or without a brief retraining performed the day before. We found that SC mice show preferential exploration of new object at day 9 only with retraining, while EE mice do it even without. At day 21 SC mice do not show preferential exploration of novel object, irrespective of the retraining, while EE mice are still capable to benefit from retraining, even if they were not able to spontaneously recover the trace. Analysis of c-fos expression 20Â days after learning shows a different pattern of active brain areas in response to the retraining session in EE and SC mice, with SC mice recruiting the same brain network as naïve SC or EE mice following de novo learning. This suggests that EE promotes formation of longer lasting object recognition memory, allowing a longer time window during which saving is present.
Keywords
Related Topics
Life Sciences
Neuroscience
Neuroscience (General)
Authors
Riccardo Melani, Gabriele Chelini, Maria Cristina Cenni, Nicoletta Berardi,