Sperry

Question 1

key theme + area

Answer 1

key theme =
area =

Question 2

background

Answer 2

• each hemisphere is not the same and has special functions
• left hemisphere = language + right-hand control
• right hemisphere = imagery + left hand control

Question 3

visual pathway

Answer 3

right visual field goes to left hemisphere
left visual field goes to right hemisphere

Question 4

corpus callosum

Answer 4

connects the 2 hemispheres together, allows communication between the 2 hemispheres

Question 5

split brain operations

Answer 5

• used as treatment for epilepsy
• limits the spread of the electrical activity and therefore limiting the seizures
• op had few noticeable side effects in patients every day lives

Question 6

aim

Answer 6

• establish effects of de-connection
• prevalence of lateralisation of function

Question 7

method

Answer 7

• quasi experiment
• 11 patients that had a commissurotomy
• opportunity sampling
• 2 had procedure long ago, 9 recently

Question 8

procedure

Answer 8

• ppts sat infront of a screen with hand hole to cover their hands
• eye patch cover one eye
• told to fixate on on position on screen
• images flashed for 1/10th of a sec to either left or right visual field, also had objects behind screen that were by there hands which they couldn’t see

Question 9

results

Answer 9

• info received from one hemisphere isn’t available to the other;
  -> images shown in in left visual field couldn’t be named but could be drawn using left hand
  -> objects placed in right hand could be named but not picked out by left hand

Question 10

conclusions

Answer 10

• Hemispheres have different functions: only the left is able to produce language /spelling
• The right hemisphere can recall & identify stimuli but can’t verbalise this
• Hemispheres have independent perception, awareness & memory