In general, the right hemisphere is more efficient at dealing with spatial tasks, such as navigating a maze or reading a map, than the left hemisphere. In many individuals, it is also the dominant centre for speech and language (though the right hemisphere is involved in language processing to a minor extent). The left hemisphere, for example, is generally responsible for analytical tasks, such as calculating and reading.
Split-brain syndrome, also called callosal disconnection syndrome, condition characterized by a cluster of neurological abnormalities arising from the partial or complete severing or lesioning of the corpus callosum, the bundle of nerves that connects the right and left hemispheres of the brain.Īlthough it is not fully understood whether the processing of specific tasks is dependent on both hemispheres of the brain, the two hemispheres appear to each have some control over certain tasks. Science in Seconds (( A Britannica Publishing Partner) See all videos for this article Split-brain syndrome is associated with conditions such as alien-hand syndrome, which is characterized by involuntary and uncoordinated yet purposeful movement of the hands. Dysfunction or absence of this structure can result in a condition known as split-brain syndrome, in which each hemisphere of the brain functions independently.
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