SPERRY

Question 1

AIM?

Answer 1

Investigate the effects of hemisphere disconnection and show that each hemisphere has different functions.

Question 2

Research method?
Research design?

Answer 2

1. quasi.
2. independent measures.

Question 3

IV?
DV?

Answer 3

1. whether the individual has a split brain or not.
2. the individuals performance on visual & tactile tasks.

Question 4

Sample?
Sampling method?

Answer 4

1. 11 participants (with epilepsy)
2. opportunity

Question 5

Data?
Materials?

Answer 5

1. both
2. tachistoscope

Question 6

Explain the visual fields?
Explain the hemispheres & functions?
Which hands do they control?

Answer 6

1. Left visual field - right hemisphere - creativity - left hand
2. Right visual field - left hemisphere - language - right hand

Question 7

Describe the visual field tasks?

Answer 7

1. The participants using the tachistoscope would have one eye covered and were instructed to stare at the focal point.
   - they were flashed images for a 10th of a second, to either side of the focal point, to be seen in one visual field.

Question 8

Explain the visual stimuli tasks (recognition and description)?

Answer 8

Recognition - P’s could only recognise pictures that had been re-shown to the same visual field.

Description:
Left visual field - they could draw what they saw.
Right visual field - they could say what they saw.

Question 9

Describe the tactile tasks?

Answer 9

Participants were asked to say or write the name of the object in their hands.

Results:
Right hand - they were able to name the object in speech or writing
Left hand - random guesses

Question 10

Conclusion?

Answer 10

In split-brain patients, their perception in each hemisphere is independent as well as their memory.

Question 11

Results? visual fields and hemispheres (drawing or describing)

Answer 11

If participants were able to describe what they had saw, it’s because it was shown to the right visual field and processed in the left brain hemisphere which controls language.
Vice versa with drawing what they saw.