1. Hemisphere disconnection and unity in consciousness.
Sperry (1968)
Hemisphere disconnection and unity in consciousness.

5. Lateralisation of Function
LHS
RHS
(Language) LH
RH (drawing)
LVF
RVF

6. Lateralisation of Function
LEFT BRAIN FUNCTIONS   uses logic detail oriented facts rule words and language present and past math and science can comprehend knowing acknowledges order/pattern perception knows object name reality based forms strategies practical safe
RIGHT BRAIN FUNCTIONS   uses feeling "big picture" oriented imagination rules symbols and images present and future philosophy & religion can "get it" (i.e. meaning) believing appreciates spatial perception knows object function fantasy based presents possibilities impetuous risk taking

7. Can you draw (with your left hand) what you saw?
RVF
LVF
Can you draw (with your left hand) what you saw?
Left
Hemisphere
Right
Hemisphere
What did you see?
? ? ? ? ? ? ?

8. Can you draw (with your right hand) what you saw?
RVF
LVF
Can you draw (with your right hand) what you saw?
Left
Hemisphere
Right
Hemisphere
What did you see?
? ? ? ? ? ?

9. Draw (with your left hand) what you saw.
$ ?
RVF
LVF
Draw (with your left hand) what you saw.
Left
Hemisphere
Right
Hemisphere
What did you see?
A question mark $

10. Participants
11 ‘split-brain’ patients who had undergone hemisphere disconnection because they had a history of advanced epilepsy – comparison groups of ‘normal’ people.
Independent Variable – not manipulated
Hemisphere disconnection (or not).
Dependent Variable
Performance on visual and tactile task.
Quasi-experiment (no control over IV)
Visual (t-scope) - Tactile (touchy-feely) - Case Study

11. Key Terms Hemisphere Corpus callosum Tactile task
Lateralisation of function
Quasi-experiment
Case study
Tactile task
Visual task
Visual Field