Interlaminar differences in the pyramidal cell phenotype in cortical areas 7 m and STP (the superior temporal polysensory area) of the macaque monkey.

Interlaminar differences in the pyramidal cell phenotype in cortical areas 7 m and STP (the superior temporal polysensory area) of the macaque monkey. Research Abstract Details 

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Interlaminar differences in the pyramidal cell phenotype in cortical areas 7 m and STP (the superior temporal polysensory area) of the macaque monkey. Abstract Text:

G N Elston,

Pyramidal neurones were injected with Lucifer Yellow in slices cut tangential to the surface of area 7 m and the superior temporal polysensory area (STP) of the macaque monkey. Comparison of the basal dendritic arbors of supra- and infragranular pyramidal neurones (n = 139) that were injected in the same putative modules in the different cortical areas revealed variation in their structure. Moreover, there were relative differences in dendritic morphology of supra- and infragranular pyramidal neurones in the two cortical areas. Sholl analyses revealed that layer III pyramidal neurones in area STP had considerably higher peak complexity (maximum number of dendritic intersections per Sholl circle) than those in layer V, whereas peak complexities were similar for supra- and infragranular pyramidal neurones in area 7 m. In both cortical areas, the basal dendritic trees of layer III pyramidal neurones were characterized by a higher spine density than those in layer V. Calculations of the total number of dendritic spines in the "average" basal dendritic arbor revealed that layer V pyramidal neurones in area 7 m had twice as many spines as cells in layer III (4535 and 2294, respectively). A similar calculation for neurones in area STP revealed that layer III pyramidal neurones had approximately the same number of spines as cells in layer V (3585 and 3850 spines, respectively). Relative differences in the branching patterns of, and the number of spines in, the basal dendritic arbors of supra- and infragranular pyramidal neurones in the different cortical areas may allow for integration of different numbers of inputs, and different degrees of dendritic processing. These results support the thesis that intra-areal circuitry differs in different cortical areas.

Interlaminar differences in the pyramidal cell phenotype in cortical areas 7 m and STP (the superior temporal polysensory area) of the macaque monkey. Publishing Authors By Initials

GN Elston,

For similar nervous system: central nervous system: brain: prosencephalon: telencephalon: cerebrum: cerebral cortex: temporal lobe research abstracts see: nervous system: central nervous system: brain: prosencephalon: telencephalon: cerebrum: cerebral cortex: temporal lobe research

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Interlaminar differences in the pyramidal cell phenotype in cortical areas 7 m and STP (the superior temporal polysensory area) of the macaque monkey. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Experimental brain research. Experimentelle Hirnfo

VOLUME: 138

Page Numbers: 141-52

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ISSN: 0014-4819

DAY: 15

MONTH: May

YEAR: 2001

Interlaminar differences in the pyramidal cell phenotype in cortical areas 7 m and STP (the superior temporal polysensory area) of the macaque monkey. Information

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LANGUAGE: eng

NlmUniqueID: 43312

Interlaminar differences in the pyramidal cell phenotype in cortical areas 7 m and STP (the superior temporal polysensory area) of the macaque monkey. Keywords Mesh Terms:

KEYWORDS: Temporal Lobe

MESH TERMS: physiology

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Grant and Affiliation Information for Interlaminar differences in the pyramidal cell phenotype in cortical areas 7 m and STP (the superior temporal polysensory area) of the macaque monkey.

AFFILIATION: Vision, Touch and Hearing Research Centre, Department of Physiology and Pharmacology, University of Queensland, Queensland, 4072, Australia. g.elston@vthrc.uq.edu.au

Country: Germany

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MEDLINETA: Exp Brain Res

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