988 resultados para [JEL:K30] Law and Economics - Other Substantive Areas of Law - General


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--The defence of Socrates before his judges. Memoirs of Socrates. [Translated by Sarah Fielding]--The banquet of Xenophon. Translated by James Welwood.--Hiero: on the condition of royalty. Translated by the Rev. R. Graves.--The science of good husbandry; or the Economics of Xenophon. Trans lated by R. Bradley.

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Title Varies: Lakes Other Than the Great Lakes, Bays, and Sounds; General Rules and Regulations Prescribed by the Board of Supervising Inspectors as Amended at Board Meeting

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We quantified the morphology of over 350 pyramidal neurons with identified ipsilateral corticocortical projections to the primary (V1) and middle temporal (MT) visual areas of the marmoset monkey, following intracellular injection of Lucifer Yellow into retrogradely labelled cells. Paralleling the results of studies in which randomly sampled pyramidal cells were injected, we found that the size of the basal dendritic tree of connectionally identified cells differed between cortical areas, as did the branching complexity and spine density. We found no systematic relationship between dendritic tree structure and axon target or length. Instead, the size of the basal dendritic tree increased roughly in relation to increasing distance from the occipital pole, irrespective of the length of the connection or the cortical layer in which the neurons were located. For example, cells in the second visual area had some of the smallest and least complex dendritic trees irrespective of whether they projected to V1 or MT, while those in the dorsolateral area (DL) were among the largest and most complex. We also observed that systematic differences in spine number were more marked among V1-projecting cells than MT-projecting cells. These data demonstrate that the previously documented systematic differences in pyramidal cell morphology between areas cannot simply be attributed to variable proportions of neurons projecting to different targets, in the various areas. Moreover, they suggest that mechanisms intrinsic to the area in which neurons are located are strong determinants of basal dendritic field structure.