Cerebral specialization and interhemispheric communication: Does the corpus callosum enable the human condition?

M. S. Gazzaniga
<span title="2000-07-01">2000</span> <i title="Oxford University Press (OUP)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/3yly6om4ynhcta4fdjenhrdk5y" style="color: black;">Brain</a> </i> &nbsp;
The surgical disconnection of the cerebral hemispheres half-brain. By having the callosum serve as the great communication link between redundant systems, a precreates an extraordinary opportunity to study basic existing system could be jettisoned as new functions neurological mechanisms: the organization of the sensory developed in one hemisphere, while the other hemisphere and motors systems, the cortical representation of the could continue to perform the previous functions for both
more &raquo; ... l and cognitive processes, the lateralization of half-brains. Split-brain studies have also revealed the function, and, perhaps most importantly, how the divided complex mosaic of mental processes that participate in brain yields clues to the nature of conscious experience. human cognition. And yet, even though each cerebral Studies of split-brain patients over the last 40 years hemisphere has its own set of capacities, with the left have resulted in numerous insights into the processes of hemisphere specialized for language and speech and perception, attention, memory, language and reasoning major problem-solving capacities and the right abilities. When the constellation of findings is considered hemisphere specialized for tasks such as facial recognition as a whole, one sees the cortical arena as a patchwork of and attentional monitoring, we all have the subjective specialized processes. When this is considered in the light experience of feeling totally integrated. Indeed, even of new studies on the lateralization of functions, it becomes though many of these functions have an automatic quality reasonable to suppose that the corpus callosum has to them and are carried out by the brain prior to our enabled the development of the many specialized systems conscious awareness of them, our subjective belief and by allowing the reworking of existing cortical areas feeling is that we are in charge of our actions. These while preserving existing functions. Thus, while language phenomena appear to be related to our left hemisphere's emerged in the left hemisphere at the cost of pre-existing interpreter, a device that allows us to construct theories perceptual systems, the critical features of the bilaterally about the relationship between perceived events, actions and feelings. present perceptual system were spared in the opposite Abbreviations: HERA ϭ hemispheric encoding/retrieval asymmetry; LVF ϭ left visual field; RVF ϭ right visual field; SOA ϭ stimulus-onset asynchrony
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