Lateralisation AO3

Question 1

Connected brain

Answer 1

PET scan
- identify which areas were active during visual processing
- connected brains asked o look at forest
- RH more active looking at global forest
- LH more active with finer details single tree
- visual processing, lateralisation in split and connected brain

Question 2

One brain

Answer 2

• brain scan 1000 people 7-19
• found certain people used certain H for some tasks
• no evidence of a dominant side
• R/L brained people is wrong

Question 3

Research support

Answer 3

• Gazzaniga
• split-brain participants perform better than connected controls on certain tasks
  e.g. identifying odd one out from objects
• in normal brain LH better cognitive ability is ‘watered down’ by the inferior RH
• suggests left brain and right brain are distinct

Question 4

Generalisation

Answer 4

• can’t establish causal relationships
• Sperry participants compared to control
• none of the control had epilepsy - major confounding variable
• differences could be due to epilepsy not split-brain