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Transcript
Psicothema
ISSN: 0214-9915
[email protected]
Universidad de Oviedo
España
Santín, Luis J.; Aguirre, José A.; Rubio, Sandra; Begega, Azucena; Miranda, Rubén; Arias,
Jorge L.
Spatial memory and c-fos expression in supramammillary nucleus, anterior cingulated gyrus
and entorhinal cortex
Psicothema, vol. 13, núm. 2, 2001, pp. 214-221
Universidad de Oviedo
Oviedo, España
Available in: http://www.redalyc.org/articulo.oa?id=72721306
Abstract
To investigate brain substrates of spatial memory, the cellular expression of c-Fos protein in rats was studied after training the
animals to perform a spatial reference memory task and a working reference memory task in a Morris water maze. The number of
c-Fos positive neuronal nuclei was quantified in several brain regions: entorhinal cortex, anterior cingulate gyrus, and
supramammillary nucleus. The results showed that spatial training in reference and working memory tasks increased the number
of entorhinal cortex activated neurons (c-Fos positive neurons). No clear association was found between c-fos activation in the
anterior cingulate gyrus and either spatial reference or working memory tasks. The number of c-Fos immunoreactive neuronal
nuclei in the supramammillary neurons was greater in the spatial working memory groups than in the spatial reference memory
groups suggesting that neurons of the supramammillary nucleus plays an important role in spatial processing
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