Brazil's developing northeast; a study of regional planning and foreign aid.

Bibliographical references.

Regional geology of the southern Lake Erie (Ohio) bottom : a seismic reflection and vibracore study /

"December 1982."

Regional management of solid wastes : a planning study /

"This condensation (SW-80.1)--of an unpublished report by John H. Sweeten was prepared for the Federal solid waste management program."

Regional issue identification and assessment : study methodology annual report.

Includes bibliographical references.

Plan of study for the northern Atlantic coastal plain regional aquifer system analysis /

"April 1980."

Plan of study for the regional aquifer systems analysis of the upper Colorado River Basin in Colorado, Utah, Wyoming, and Arizona /

Mode of access: Internet.

A preliminary study of the Los Angeles regional economy /

"This report is preliminary and subject to change."

Regional geography : a chorographical study of the world /

Includes bibliographical references and index.

Lake County transportation study and comprehensive highway plan for coordinated urban and regional comprehensive transportation planning : revised prospectus /

Mode of access: Internet.

Regional correctional system : a feasibility and planning study : ILEC Criminal Justice Planning Region 19--Clay, Crawford, Edwards, Effingham, Fayette, Jasper, Lawrence, Marion, Richland, Wabash, Wayne, White.

pt 1. Comprehensive recommendations.--pt. 2. Data support.

Study of the feasibility of a regional railroad system for northwest Pennsylvania /

Mode of access: Internet.

Application of activity analysis to regional development planning : a case study of economic planning in rural south central Kentucky /

Cover title.

Regional specialization in pyramidal cell structure in the visual cortex of the galago: An intracellular injection study of striate and extrastriate areas with comparative notes on New World and Old World monkeys

Recent studies have revealed marked differences in the basal dendritic structure of layer III pyramidal cells in the cerebral cortex of adult simian primates. In particular, there is a consistent trend for pyramidal cells of increasing complexity with anterior progression through occipitotemporal cortical visual areas. These differences in pyramidal cell structure, and their systematic nature, are believed to be important for specialized aspects of visual processing within, and between, cortical areas. However, it remains unknown whether this regional specialization in the pyramidal cell phenotype is unique to simians, is unique to primates in general or is widespread amongst mammalian species. In the present study we investigated pyramidal cell structure in the prosimian galago (Otolemur garnetti). We found, as in simians, that the basal dendritic arbors of pyramidal cells differed between cortical areas. More specifically, pyramidal cells became progressively more spinous through the primary (V1), second (V2), dorsolateral (DL) and inferotemporal ( IT) visual areas. Moreover, pyramidal neurons in V1 of the galago are remarkably similar to those in other primate species, in spite of large differences in the sizes of this area. In contrast, pyramidal cells in inferotemporal cortex are quite variable among primate species. These data suggest that regional specialization in pyramidal cell phenotype was a likely feature of cortex in a common ancestor of simian and prosimian primates, but the degree of specialization varies between species. Copyright (C) 2005 S. Karger AG, Basel.

Regional specialization in pyramidal cell structure in the limbic cortex of the vervet monkey (Cercopithecus pygerythrus): an intracellular injection study of the anterior and posterior cingulate gyrus

The pyramidal cell phenotype varies quite dramatically in structure among different cortical areas in the primate brain. Comparative studies in visual cortex, in particular, but also in sensorimotor and prefrontal cortex, reveal systematic trends for pyramidal cell specialization in functionally related cortical areas. Moreover, there are systematic differences in the extent of these trends between different primate species. Recently we demonstrated differences in pyramidal cell structure in the cingulate cortex of the macaque monkey; however, in the absence of other comparative data it remains unknown as to whether the neuronal phenotype differs in cingulate cortex between species. Here we extend the basis for comparison by studying the structure of the basal dendritic trees of layer III pyramidal cells in the posterior and anterior cingulate gyrus of the vervet monkey (Brodmann's areas 23 and 24, respectively). Cells were injected with Lucifer Yellow in flat-mounted cortical slices, and processed for a light-stable DAB reaction product. Size, branching pattern, and spine density of basal dendritic arbors were determined, and somal areas measured. As in the macaque monkey, we found that pyramidal cells in anterior cingulate gyrus (area 24) were more branched and more spinous than those in posterior cingulate gyrus (area 23). In addition, the extent of the difference in pyramidal cell structure between these two cortical regions was less in the vervet monkey than in the macaque monkey.