split-brain technique
Noun: - A neurosurgical procedure: The split-brain technique is an experimental surgical procedure, primarily performed on animals, in which the corpus callosum—the major bundle of nerve fibers connecting the two cerebral hemispheres—is cut. This severs the primary communication pathway between the left and right sides of the brain to study their independent functions.
The term is used specifically in the context of neuroscience and experimental psychology to describe both the surgical method and the resulting condition used for research. - Researchers used the split-brain technique to study how each hemisphere processes information independently. - The findings from studies employing the split-brain technique have been fundamental to our understanding of lateralized brain functions.
- As a research paradigm: The term can refer not only to the surgical act but also to the entire methodological approach of studying hemisphere specialization in subjects with a severed corpus callosum.
- The split-brain technique has provided unique insights into the separate consciousnesses of the two hemispheres.
- Split-brain patient/subject: (Noun) An individual or animal that has undergone the split-brain technique.
- The split-brain patient could not verbally name an object presented only to the left visual field.
- Commissurotomy: (Noun) A more general medical term for the surgical cutting of a commissure (a bundle of nerve fibers), which includes the split-brain technique.
- Callosotomy: (Noun) The surgical severing of the corpus callosum, often used in a clinical human context to treat severe epilepsy.
- Cerebral commissurotomy
- Callosal section
- Lateralization of brain function: The theory that specific neural functions are localized to one hemisphere of the brain, which the split-brain technique helped to demonstrate.
- Interhemispheric communication: The transfer of information between brain hemispheres, which is disrupted by this technique.
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brain surgery on animals in which the corpus callosum (and sometimes the optic chiasm) is severed so that communication between the cerebral hemispheres is interrupted
