Cerebral Cortex Advance Access originally published online on December 8, 2004
Cerebral Cortex 2005 15(7):1044-1053; doi:10.1093/cercor/bhh205
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Cerebral Cortex V 15 N 7 © Oxford University Press 2004; all rights reserved
Localization of the Human Cortical Visual Area MT Based on Computer Aided Histological Analysis
1 Laboratory of Neuro Imaging, UCLA School of Medicine, Los Angeles, CA, USA and 2 Center for Cognitive Neuroscience, Dartmouth College, Hanover, NH, USA
Address correspondence to Arthur W. Toga Laboratory of Neuro Imaging, UCLA School of Medicine, Los Angeles, CA, USA. E-mail: toga{at}loni.ucla.edu.
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.
Key Words: architectonics histology motion perception MT visual cortex
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