Abstract
SURGICAL transection of the cerebral commissures causes certain “deconnexion” or “split brain” symptoms in man1 which manifest themselves as unilateral agnosias2–5, aphasia6,7 or dyspraxia8 depending on the method of examination. A major reason for the symptoms is that many types of behaviour depend on a nervous afferent input available from only half of the peripheral field to each hemisphere and the field halves fail to unite in the absence of the cerebral commissures2–5. Another reason is the “lateralization” of the cerebral hemispheres with regard to language6,7,9, the perception of spatial relations10–13 and visual form14.
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NORRSELL, U. Defects in Tactile Directional Sensitivity after Forebrain Commissurotomy in Man. Nature 245, 41–42 (1973). https://doi.org/10.1038/245041a0
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DOI: https://doi.org/10.1038/245041a0
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