Interhemispheric Asymmetries of the Modular Structure in Human Temporal Cortex
- 15 September 2000
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 289 (5486), 1946-1949
- https://doi.org/10.1126/science.289.5486.1946
Abstract
Language-relevant processing of auditory signals is lateralized and involves the posterior part of Brodmann area 22. We found that the functional lateralization in this area was accompanied by interhemispheric differences in the organization of the intrinsic microcircuitry. Neuronal tract tracing revealed a modular network of long-range intrinsic connections linking regularly spaced clusters of neurons. Although the cluster diameter was similar in both hemispheres, their spacing was about 20 percent larger in the left hemisphere. Assuming similar relations between functional and anatomical architecture as in visual cortex, the present data suggest that more functionally distinct columnar systems are included per surface unit in the left than in the right area 22.Keywords
This publication has 26 references indexed in Scilit:
- The Origin and Topography of Long-Range Intrinsic Projections in Cat Visual Cortex: A Developmental StudyCerebral Cortex, 1996
- PET Activation of Posterior Temporal Regions during Auditory Word Presentation and Verb GenerationCerebral Cortex, 1996
- Images of the Mind: Studies with Modern Imaging TechniquesAnnual Review of Psychology, 1994
- Cortical hierarchy reflected in the organization of intrinsic connections in macaque monkey visual cortexJournal of Comparative Neurology, 1993
- Comparison of Intrinsic Connectivity in Different Areas of Macaque Monkey Cerebral CortexCerebral Cortex, 1993
- Three-Dimensional Quantitative Analysis of Hemispheric Asymmetry in the Human Superior Temporal RegionCerebral Cortex, 1993
- THE CORTICAL LOCALIZATION OF THE LEXICONSBrain, 1992
- Language and Reading in the Right Hemisphere: Highways or Byways of the Brain?Journal of Cognitive Neuroscience, 1990
- Widespread Periodic Intrinsic Connections in the Tree Shrew Visual CortexScience, 1982
- Human Brain: Left-Right Asymmetries in Temporal Speech RegionScience, 1968