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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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| Jiang, Yong; Swallow, Stephen K.; Paton, Peter. |
| Establishing habitat corridors has been an important strategy in many conservation practices. Nonetheless, the existing literature has ignored the role habitat corridors could play in reserve network design. Based on modern ecological theory, the effectiveness of a reserve system largely depends on its connectivity, but it is less clear how recent spatial modeling of reserve network design improves the connectivity of the reserve system as required by population persistence in a highly fragmented, heterogeneous landscape. This study explicitly incorporates the idea of habitat corridor into optimal reserve design, an approach which might significantly reduce the uncertainty brought by land use change or a source-sink habitat matrix. More importantly, by... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Nature reserve; Ecosystem; Spatial configuration; Amphibian; Environmental Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19440 |
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