Home > Publications database > Morphology and Physiology of Excitatory Neurons in Layer 6b of the Somatosensory Rat Barrel Cortex > print |
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100 | 1 | _ | |a Marx, M. |b 0 |u FZJ |0 P:(DE-Juel1)VDB6549 |
245 | _ | _ | |a Morphology and Physiology of Excitatory Neurons in Layer 6b of the Somatosensory Rat Barrel Cortex |
260 | _ | _ | |a Oxford |b Oxford Univ. Press |c 2013 |
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440 | _ | 0 | |a Cerebral Cortex |x 1047-3211 |0 1171 |y 00 |v 00 |
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520 | _ | _ | |a Neocortical lamina 6B (L6B) is a largely unexplored layer with a very heterogeneous cellular composition. To date, only little is known about L6B neurons on a systematic and quantitative basis. We investigated the morphological and electrophysiological properties of excitatory L6B neurons in the rat somatosensory barrel cortex using whole-cell patch-clamp recordings and simultaneous biocytin fillings. Subsequent histological processing and computer-assisted 3D reconstructions provided the basis for a classification of excitatory L6B neurons according to their structural and functional characteristics. Three distinct clusters of excitatory L6B neurons were identified: (C1) pyramidal neurons with an apical dendrite pointing towards the pial surface, (C2) neurons with a prominent, "apical"-like dendrite not oriented towards the pia, and (C3) multipolar spiny neurons without any preferential dendritic orientation. The second group could be further subdivided into three categories termed inverted, "tangentially" oriented and "horizontally" oriented neurons. Furthermore, based on the axonal domain two subcategories of L6B pyramidal cells were identified that had either a more barrel-column confined or an extended axonal field. The classification of excitatory L6B neurons provided here may serve as a basis for future studies on the structure, function, and synaptic connectivity of L6B neurons. |
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773 | _ | _ | |a 10.1093/cercor/bhs254 |p 2803-2817 |0 PERI:(DE-600)1483485-6 |t Cerebral cortex |y 2013 |x 1047-3211 |v 23 |n 12 |
856 | 7 | _ | |u http://dx.doi.org/10.1093/cercor/bhs254 |
856 | 4 | _ | |u https://juser.fz-juelich.de/record/22774/files/FZJ-22774.pdf |y OpenAccess |z Published final document. |
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914 | 1 | _ | |a First published online: September 3, 2012 |y 2013 |
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