EEG symmetry

Question 1

What does EEG stand for?

Answer 1

Electoencephalography

Question 2

When was the EEG invented and by who?

Answer 2

1929 and it was made by Hans Berger

Question 3

What are some general advantages of EEGs

Answer 3

-most affordable neuroimaging technique as commercial companies provide equipment
-one of the best ways of measuring human brain activity

Question 4

Define current

Answer 4

the flow of charged particles

Question 5

Define voltage

Answer 5

the potential for current to flow from one place to another

Question 6

How do we measure voltage in EEG?

Answer 6

-measure voltage between each active electrode and a reference electrode.
-voltage produced by synchronised neural activity which is detectable outside the skull
-our minds are a big network of neurons which send electrochemical signals to each other

Question 7

Ohm’s law equation

Answer 7

V=IR
V=voltage
I=current
R=resistance

Question 8

How many electrons is a coulomb?

Answer 8

6.24 x 10^18 electrons
ALSO
-An ampere (I) is motion 1 coulomb per second past a fixed point.
-It takes 1 volt to move 1 ampere of current past 1 ohm of resistance.
-EEG signals are in the range of microvolts (a millionth of a volt).

Question 9

What is the signal you get from EEG called?

Answer 9

Event-related potential/ERP (Luck 2005)