Behavioural neuroscience Flashcards
(18 cards)
what experimental, clinical, and cognitive neuropsychology mean
e - experimenting on healthy humans
cl - applying knowledge to patients with brain injuries
co - studying people with brain damage
what cognitive deficits arise from brain damage
langage, vision , exec control, motor programming
what is dysexecutive syndrome
problems with memory, planning and organisation
what is synesthesia
you see words as colours
what are group studies?
common diagnosis or damage in a common region
problem with group studies
variability among patients in a group
what is a dissociation
showing that damage to a particular brain structure disrupts on aspect of a complex mental process but not another
example of a single dissociation
clive wearing - dissociation between diff types of memory
problem with a single dissociation ?
2 tasks may differ in complexity - two people may differ in how good they are at it.
dissociation could be due to ability of person therefor alter results
what is a double dissociation
A disrupts Z while leaving Y B disrupts Y while leaving Z
BEST EVIDENCE that areas are functionally distinguished
How does an MRI work
radiowaves cause protons H+ in brain to spin… reciever then detects their spin and generates an imagine
whats does a VBM show
differences in grey matter
how does fMRI work
measures changes in cerebral blood flow following brain activity - active areas have LOW oxy haemoglobin and HIGH deoxy - blood flow to area which increases the ratio oxy:deoxy
problems with fMRI
time resolution. noise, claustrophobia, signal indirect measure of neural activity
How does EEG work
measures brain activity- scalp electrodes provide continous recording.
when are EEGs used
comas, epileptics, sleep therapy, anaethesia
2 pros to EEGs
inexpensive + non invaisive
- What is an ERP
2. 3 +ves
1. evoked electrical activity specifically related to sensory motor and cognitive defects 2. - NON invaisive electrodes on head - exact timing - low cost
