Localisation of function AO3
- Created by: Jordan64
- Created on: 23-08-17 17:44
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- Localisation of function AO3
- Localisation support from brain scans
- Petersen et al (1988): brain scans to show activity in Wernicke's area during listening task and Broca's area during reading task
- Suggests these areas of brain have different functions
- Number of sophisticated and objective methods for measuring activity in brain, providing scientific evidence for localisation of function
- Tulving et al (1994): long term memory study finding semantic and episodic memories located in different parts of frontal cortex
- Suggests these areas of brain have different functions
- Number of sophisticated and objective methods for measuring activity in brain, providing scientific evidence for localisation of function
- Suggests these areas of brain have different functions
- Suggests these areas of brain have different functions
- Petersen et al (1988): brain scans to show activity in Wernicke's area during listening task and Broca's area during reading task
- Localisation support from neurological evidence
- Removing or destroying areas of brain to control aspects of behaviour developed 1950's Walter Freeman - early attempts were brutal and imprecise
- Dougherty et al (2002): 44 OCD patient cingulotomy. 32 week follow up, 33% criteria for successful response to surgery, 14% partial
- Success of procedure suggests symptoms and behaviours associated with serious mental disorders are localised
- Dougherty et al (2002): 44 OCD patient cingulotomy. 32 week follow up, 33% criteria for successful response to surgery, 14% partial
- Removing or destroying areas of brain to control aspects of behaviour developed 1950's Walter Freeman - early attempts were brutal and imprecise
- Localisation support from case studies
- Phineas Gage received serious neurological brain damage in accident
- Survived but damage affected personality - calm and reserved to quick-tempered, rude and 'no longer Gage'
- Change in Gage's temperament following accident suggests frontal lobe responsible regulating mood
- Survived but damage affected personality - calm and reserved to quick-tempered, rude and 'no longer Gage'
- Phineas Gage received serious neurological brain damage in accident
- Contradictory research
- Lashley (1950) suggests higher cognitive functions not localised but distributed in more holistic way
- Removed 10% - 50% cortex in rats learning maze. No area was more important than any other in terms of rats' ability to learn maze
- Suggests learning too complex localised and involves different areas of brain
- Removed 10% - 50% cortex in rats learning maze. No area was more important than any other in terms of rats' ability to learn maze
- Lashley (1950) suggests higher cognitive functions not localised but distributed in more holistic way
- Neural plasticity challenge to localisation theory
- When brain damage & function lost, rest brain able reorganise itself & recover function
- Lashley: law of equipotentiality - other areas of brain 'chip in' so same neurological action achieved
- Several documented cases of stroke victims recovering abilities lost - suggests holistic
- Lashley: law of equipotentiality - other areas of brain 'chip in' so same neurological action achieved
- When brain damage & function lost, rest brain able reorganise itself & recover function
- Localisation support from brain scans
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