biopsych

Question 1

strength of localisation is support from neurosurgery

Answer 1

neurosurgery used to treat mental disorders
Dougherty studied 44 ppl with OCD who had cingulotomy
at follow up 30% met the criteria for successful response and 14% partial response
success of procedures suggests that beh associated with serious mental disorders is localised

Question 2

brain scan evidence to support localised

Answer 2

Peterson brain scans to show activity in wernickes during a listening task n brocas during reading task

Tulving- semantic and episodic memories located in different parts of prefrontal cortex

Question 3

LOcalisation been questioned

Answer 3

DICK AND TREMBLAY
found few researchers still believe language is only in brocas n wernickes
FMRI have identified regions in right hemisphere n thalamus
suggests language may be organised more hollistically in brain contradicts localisation

Question 4

LATERALISATION

Answer 4

brain is divided into two sides
two hemispheres

Question 5

localised

Answer 5

some functions are localised and appear in both left and right hemisphere

Question 6

LIMITATION OF SPERRY

Answer 6

the behaviour of the split brain ppts was compared to a neurotypical control group
However none of control had epilepsy
any differences may be due to epilepsy not the split brain-cofounding variable
This means some of the unique features of split brain ppts congni abilities might have been due to epilepsy

Question 7

PLATICITY - MAGUIRE

Answer 7

found significantly more volume of grey matter of posterior hippocampus in taxi drivers compared to control group
this brain area linked w development of spatial n navigation skills
the longer they were in the job the more pronounced the structural diff

Question 8

PLASTICITY - DRAGANSKI

Answer 8

imaged the brains of medical students 3 months before n after final exams
learning induced changes seen in posterior hippo n parietal cortex
as a result of learning

Question 9

FUNCTIONAL RECOVERY

Answer 9

healthy brain areas take over functions of damaged areas
neuroscientists suggest this occurs quickly after trauma-spont recovery- but slows down to a point in which person will require rehabilitative therapy

Question 10

the brain rewires itself

Answer 10

by forming new synaptic connections
brain able to rewire n reorganise itself by forming new synaptic connections close to area of damage

Question 11

axanol sprouting

Answer 11

growth of new nerve endings which connect to undamaged cells to form new neuronal pathways

Question 12

Denervatiton supersensitivity

Answer 12

axons that do similar jobs become aroused to a higher level to compensate for ones that r lost

Question 13

recruitment of homologous areas

Answer 13

opposite side of brain takes over specific tasks