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| GUIC,ELIANA; CARRASCO,XIMENA; RODRÍGUEZ,EUGENIO; ROBLES,IGNACIO; MERZENICH,MICHAEL M. |
| In the present experiments we studied exclusive and overlapping cortical representational áreas of the vibrissae in layer IV cells, across the entire barrel subfield of the rat somatosensory cortex, looking for evidences that would challenge the present assumptions of homogeneity and symmetry among cortical columns in this sensorial system. Our main findings were that in layer IV of the rat barrel cortex: A) Size of vibrissae cortical representational áreas (X=0.4174mm²; SD=0.025) was not homo geneous, vibrissae in dorsal rows (A-B) had significantly smaller áreas than those in ventral rows (D-E), a pattern that repeated itself in ares 1-4. B) This difference arises from vibrissal representational overlap, and not from variations in exclusive zones, which... |
| Tipo: Journal article |
Palavras-chave: Cortical representation; Barrel cortex; Evoked activity; Rat -somatosensory cortex; Spatial configuration. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000400011 |
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