Testing a patient 32 years after callosal sectioning revealed defects in transfer of learning and crossed (mixed modality) matching. This points out that defects may persist long after such surgery and that early reports of negative results of callosal section in patients were probably not correct.
Goldstein MN, Joynt RJ, Hartley RB. The Long-Term Effects of Callosal Sectioning: Report of a Second Case. Arch Neurol. 1975;32(1):52–53. doi:10.1001/archneur.1975.00490430074014
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