Biopsychology:-
LASHLEY 50 rats with brain cortex destroyed (L) - animal research
- Ability to successfully re-run the maze was affected by how - However
much of the cortex was destroyed Lorenz (4
- Cognitive processes are not localised, but destruct used characteristic)
across the brain = hunger, fear,
aggression,
Lashley’s law of Equipotenftiality - any surviving brain circuits reproduction
“chip in”, so that similar neurological outcome and the same function
is restored
WERNICKE Damage = difficulty in understanding language - individual can speak but are unable to
understand language or what they are saying
- Left temporal lobe
BROCA Damage = difficulty in speech production
TAN = lesion in their left frontal hemisphere
Been unable to understand spoken language, speak or write.
- Could only say ‘tan’
- Left frontal lobe (‘language centre’
RAINE et al.
PHINEAS His accident resulted in serious brain damage. The damage affected (L) - case study
GAGE his personality and made him rude and quick-tempered.
SPERRY 11 Patients who had their corpus callosum cut to treat epilepsy (S) - scientific
(commissurotomy) research
P - describing what you see =
- One eye covered and a stimulus flashed for 1/10 seconds (S) - Puccetti
- ‘Dog ‘ or ‘Cat’
- Asked what theyd seen (L) - small sample size
F - if dog was exposed to right visual field - could say the word dog
(left hemisphere)
- If cat exposed to left visual field - column;t vocally say ‘cat’
(right hemisphere), but they could write/draw it
TURK et al 48 y/o man who has a commissurotomy 23 years ago (L) - JW goes against
P - Stimuli morphed faces of the research and patients faced (JW) hemispheric
- Morphed faces from 0% to 100% lateralisation
- Trial 1 = press button if morphed face was him (JW)
- Trial 2 = press button if morphed face was researcher
F - right hemisphere is better at face processing, but the left
hemisphere may have an important role in self-recognition
- Left h = clear bias towards identifying morphed face as
himself
- Right h = clear bias as identifying familiar faces
PUCCETTI Debated to the connection between two hemispheres
- two hemispheres are functionally different and represent a form of ‘duality’, and were
are all two minds
EB Functional recovery - Left hemisphere removed age 2 and lost all language
- By age 4 = recovered language ability without left H
LASHLEY 50 rats with brain cortex destroyed (L) - animal research
- Ability to successfully re-run the maze was affected by how - However
much of the cortex was destroyed Lorenz (4
- Cognitive processes are not localised, but destruct used characteristic)
across the brain = hunger, fear,
aggression,
Lashley’s law of Equipotenftiality - any surviving brain circuits reproduction
“chip in”, so that similar neurological outcome and the same function
is restored
WERNICKE Damage = difficulty in understanding language - individual can speak but are unable to
understand language or what they are saying
- Left temporal lobe
BROCA Damage = difficulty in speech production
TAN = lesion in their left frontal hemisphere
Been unable to understand spoken language, speak or write.
- Could only say ‘tan’
- Left frontal lobe (‘language centre’
RAINE et al.
PHINEAS His accident resulted in serious brain damage. The damage affected (L) - case study
GAGE his personality and made him rude and quick-tempered.
SPERRY 11 Patients who had their corpus callosum cut to treat epilepsy (S) - scientific
(commissurotomy) research
P - describing what you see =
- One eye covered and a stimulus flashed for 1/10 seconds (S) - Puccetti
- ‘Dog ‘ or ‘Cat’
- Asked what theyd seen (L) - small sample size
F - if dog was exposed to right visual field - could say the word dog
(left hemisphere)
- If cat exposed to left visual field - column;t vocally say ‘cat’
(right hemisphere), but they could write/draw it
TURK et al 48 y/o man who has a commissurotomy 23 years ago (L) - JW goes against
P - Stimuli morphed faces of the research and patients faced (JW) hemispheric
- Morphed faces from 0% to 100% lateralisation
- Trial 1 = press button if morphed face was him (JW)
- Trial 2 = press button if morphed face was researcher
F - right hemisphere is better at face processing, but the left
hemisphere may have an important role in self-recognition
- Left h = clear bias towards identifying morphed face as
himself
- Right h = clear bias as identifying familiar faces
PUCCETTI Debated to the connection between two hemispheres
- two hemispheres are functionally different and represent a form of ‘duality’, and were
are all two minds
EB Functional recovery - Left hemisphere removed age 2 and lost all language
- By age 4 = recovered language ability without left H
