hemispheric lateralisation - answer- the 2 halves of the brain are functionally different
e.g left half specialises language
wheras right - motor visual tasks
sperry + gazzaniga (1967) - answer- commisurotomy
- corpus collosum - nerve fibres connecting 2 halves of brain so they can communicate -
cut
- to control epileptic seizures
procedure - sperry and gazzaniga 1967 - answertachistascope
- image/ word projected to patients right visual field (processed by left hemisphere)
- non split brian corpus callosum would share info between both hemispheres to reflect
a comlete visual field
- split brain - info could not be shared between hemispheres
- right visual field objects described easily
- left visual field ppts couldn't describe what they'd seen
< lack of adept language centres in right hemisphere
:) produced significant findings - answer- left hemisphere - analytical and verbal
- right hemisphere - spatial taks and music
-- hplistic approach to language AO2 just broca's and wernicke's area
:( nomothetic laws made of small sample size - answer- all 11 ppts had epilepsy
- unique changes in the brain
- influenced findings
- compared to cont group w no epilepsy - confoundign avriable
+ drug therapy?
sperry - matching faces experiment - answer- right hemisphere dominant in facial
recognition
- macthing face from series of others
- picture processed by right hemisphere selected most of the time
... left hemisphere dominated in desc the face
strength in methodology :) - answer- standardised procedures
- reliability and replicability
- controlled < lab experiment
:( pop psychological lit - answer- over simplifying fucntional distinction between left and
right hemisphere
.. modern neuroscientists argue the distinction is less clean cut
e.g plasticity
- hemispheres of brain constantly communicate performing everyday tasks
- behaviours associated w one hemisphere can be effectively perfomed by the other
when the situation requires