split brain research into hemispheric lateralisation

Question 1

contralaterality

Answer 1

• the Right side of brain processes information from the Left half of body
• the Left side of the brain processes information from the Right half of body

Question 2

left half of brain

Answer 2

• specialised for language
• linguistic expression both symbolic and logical, and mathematical ability

Question 3

right half of brain

Answer 3

• specialised for perception
• visuospatial, artistic, facial recognition, emotion

Question 4

sperry aim

Answer 4

to investigate the effects of hemispheric disconnection and to show that each hemisphere has different functions

Question 5

sperry procedure

Answer 5

• quasi experiment of 11 subjects with severed corpus callosum and 11 with normal brain function
• pps were given tasks which involved presenting stimuli to each hemisphere e.g only to left or right hemisphere

Question 6

sperry results

Answer 6

certain responses e.g language were not possible for pps with severed corpus callosum

Question 7

sperry conclusion

Answer 7

provided evidence for lateralisation of function i.e the two different hemispheres have different functions

Question 8

evaluation
scientific credibility

Answer 8

P: high level of control over variables
E: tasks sperry used were highly standardised , allowed him to send information separately to each hemisphere
C: such information only to be seen by one hemisphere.research to be easily replicated which can help determine whether results are reliable and therefore support hemisphere lateralisation in a scientific way

Question 9

evaluation of sperry
real world understanding

Answer 9

P: sperry’s work has many applications for helping patients e.g who had a stroke
E: a stroke can affect one side of the brain specifically. knowledge about brain lateralisation can assist psychologists and doctors with understanding recovery
C:

Question 10

evaluation
sample size

Answer 10

P: sample size of 11pps. cannot be sure whether all split brain patients had experienced the same amount of de-connection
E: e.g if their surgeons had been done by different surgeons at different times and it is not clear how deeply the corpus callosum was cut
C: therefore, not reliable because sperry lacks control over this variable, making the study difficult to replicate and therefore weakening the support for hemisphere lateralisation