split brain research

Question 1

what is hemispheric lateralisation

Answer 1

two halves of the brain are functionally different
behaviours are controlled by one hemisphere rather than both eg speech

Question 2

strength of hemispheric lateralisation

Answer 2

fink et al 1996
pet scans identify active areas during tasks
rh is focused on the whole pic whereas the left is focused on the finer details
features of the connected brain

Question 3

limitation of hemispheric lateralisation

Answer 3

neilson et al 2013
there is no dominant side of the brain
no left or right brained people

Question 4

what is the split brain procedure

Answer 4

cutting the corpus callosum
to reduce epilepsy
as electrical activity moves through hemispheres during seizures

Question 5

who did split brain research

Answer 5

sperry 1968

Question 6

what were the 3 tasks participants did in split brain research

Answer 6

describe what you see
tactile tests
drawing tasks

Question 7

what were the results of describe what you see

Answer 7

image in LFV could not describe what they saw
image in RFV could describe
as language is in then left hemisphere

Question 8

what were the results of tactile tests

Answer 8

could not describe object in left hand
could describe object in right hand

Question 9

what were the results of drawing tasks

Answer 9

pic in LFV and draw w left hand could draw better
RFV and right hand not as clear
motor tasks dominant in right side of the brain

Question 10

strength of sperry

Answer 10

luck et al 1989
showed split brain participants perform better in situations than controls
supports sperry in that left and right side are distinct

Question 11

weakness of sperry

Answer 11

lacks generalisability
quasi experiment so cant be repeated
control group didnt have epilepsy so its a confounding variable.