Journal
NEUROPSYCHOLOGY REVIEW
Volume 20, Issue 2, Pages 174-190Publisher
SPRINGER
DOI: 10.1007/s11065-010-9130-1
Keywords
Corpus callosum; Crossed-uncrossed difference (CUD); Redundant targets effect (RTE); Functional lateralization; Stroop; Hierarchical perception; Attention; Neuroimaging
Categories
Funding
- National Institutes of Health [AA018022, AA010723, AA005965, AA012388, AA017168, AA017432]
- NATIONAL INSTITUTE ON ALCOHOL ABUSE AND ALCOHOLISM [R01AA005965, R01AA018022, R01AA012388, R37AA010723, R37AA005965, R01AA010723, K05AA017168] Funding Source: NIH RePORTER
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In recent years, cognitive neuroscience has been concerned with the role of the corpus callosum and interhemispheric communication for lower-level processes and higher-order cognitive functions. There is empirical evidence that not only callosal disconnection but also subtle degradation of the corpus callosum can influence the transfer of information and integration between the hemispheres. The reviewed studies on patients with callosal degradation with and without disconnection indicate a dissociation of callosal functions: while anterior callosal regions were associated with interhemispheric inhibition in situations of semantic (Stroop) and visuospatial (hierarchical letters) competition, posterior callosal areas were associated with interhemispheric facilitation from redundant information at visuomotor and cognitive levels. Together, the reviewed research on selective cognitive functions provides evidence that the corpus callosum contributes to the integration of perception and action within a subcortico-cortical network promoting a unified experience of the way we perceive the visual world and prepare our actions.
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