localisation of Brain function Sperry 1986
- Created by: cieran32
- Created on: 20-09-18 17:01
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- localisation of brain (Sperry (1986) Effects of split brain surgery
- experiment
- ppts would cover one eye and look at a projection screen
- pictures were shown to right or left side if the screen at high speed so no time for eye movement
- Results
- if picture was shown to the right eye ppts could say or write what they saw with no issue , however when shown to the left they couldn't say or write but they could pick a corresponding object even though they didn't know why
- evaluation
- obtained both Qualitative and Quantitative data
- using 2 research methods increased reliability and validity of the study
- small sample so can't be generalised
- artificaiial situation so has low ecological validity and is therefore hard to generalise results
- evaluation
- if picture was shown to the right eye ppts could say or write what they saw with no issue , however when shown to the left they couldn't say or write but they could pick a corresponding object even though they didn't know why
- Results
- pictures were shown to right or left side if the screen at high speed so no time for eye movement
- ppts would cover one eye and look at a projection screen
- Conclusions
- Left hemisphere (right visual field) can convert sight into spoken and written language
- shows different areas have different functions in the brain
- info entering the right hemisphere can usually cross over to be processed in the left
- results show this can't happen in split brain patients
- info going into the right hemisphere can't be converted into language at all; can still produce a non-verbal response
- in severe cases of epilepsy the only treatment is to cut the corpus callosum
- this stops seizures , however as a result information cannot move between the left and right hemispheres
- experiment
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