ways Of Studying Brain ERP

Question 1

ERP
works by

Answer 1

-electrodes placed on scalp
-shows= brain response to specific stimulus

-stimulus presented to individual many times
-brain activity is measured same way EEG

HOWEVER
-extraneous brain activity from original EEG record filtered out leaving only those resp link to presentation of task.

Question 2

ERP
What do they look like?

Answer 2

-graphed
-base line measure line Shown with test line to diff in brain activity to specific stimuli

Question 3

ERP
When used

Answer 3

Study range of cognitive processes
-e.g
Attention, memory or perception in resp to specific stimuli

Question 4

AO3 strength

Answer 4

P-higher temporal resolution, esp compared to FMRI

E-mean can identify brain activity every millisecond so researchers can see brain activity in real time

E-however ERP= poorer spatial resolution than FMRI as only detect brain activity in general area

L-than identify specific location of brain activity

Question 5

AO3 limitation

Answer 5

P-hard to obtain meaningful data from use to ERP

E-coz can be affected by external factors such as background noise

E-means = take many trials to obtain meaningful data as it hard to control other factors

L-limits validity