split brain research

Question 1

what are the two hemispheres connected by

Answer 1

corpus callosum- thick bundle of 200-300 nerve fibres

Question 2

split brain meaning

Answer 2

cutting the corpus callosum which is a surgical procedure for epilepsy. reduces symptoms but loss of control feeling

Question 3

psychologists who did it

Answer 3

sperry and gazzanigas

Question 4

sperry procedure

Answer 4

quasi-experiment using 11 patients all had corpus callostomy
projected info to each visual field
so controlling info that each hemisphere had access too
p had to say what they had saw, draw it or select from a number of objects hidden from view with their hands

Question 5

sperry findings

Answer 5

info presented to left hemisphere could be spoken but not if it was delivered to right

right hemisphere could draw or select object using left hand

this suggests both hemispheres were capable of independence and supports the theory of language centres being in the left side

Question 6

gazzanigas

Answer 6

split brain research using p also had corpus callostomy projected info
found that when each hemisphere of split brain were presented with faces to the right they were much more able to recognise them

right- facial recognition

Question 7

positives

Answer 7

fundamental impact on unity of consciousness. brain- separate intelligence processes
proves the theories

Question 8

negatives

Answer 8

sample is small

procedure is uncommon and unnatural