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Cerebral Cortex Advance Access published online on December 8, 2004
Cerebral Cortex, doi:10.1093/cercor/bhh205
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© Oxford University Press 2004; all rights reserved

Article

Localization of the Human Cortical Visual Area MT Based on Computer Aided Histological Analysis

J. Annese 1, M.S. Gazzaniga 2, and A.W. Toga 3*

1 Laboratory of Neuro Imaging, UCLA School of Medicine, Los Angeles, CA, USA; Center for Cognitive Neuroscience, Dartmouth College, Hanover, NH, USA
2 Center for Cognitive Neuroscience, Dartmouth College, Hanover, NH, USA
3 Laboratory of Neuro Imaging, UCLA School of Medicine, Los Angeles, CA, USA

* To whom correspondence should be addressed.
A.W. Toga, E-mail: toga{at}loni.ucla.edu


  Abstract

We describe human area MT histologically based on the observer independent analysis of cortical myeloarchiteture, multiple complementary staining techniques and 3-D reconstruction. The topography of an architectonic field that presented constant structural characteristics across specimens was studied in relation to the sulcal geography of the occipito-temporal region. Objective and semi-automated analysis of local microstructure revealed a distinct cortical architecture and matched topographically the localization of MT derived from functional imaging. MT was localized by the histotopographic method in relation to definite macroscopic landmarks. This study demonstrates a new set of distinguishing architectonic features of human MT that permit localization on structural grounds and suggests that the characteristic laminar structure of this area may be related to its unique pattern of connections and to its role in visual perception.

Keywords: architectonics; histology; motion perception; MT; visual cortex.
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