Mob B

Question 1

What is the primary stimuli that elicits the N170 ERP component?

A) Auditory cues
B) Tactile stimulation
C) Visual faces
D) Olfactory stimuli

Answer 1

C) Visual faces

Question 2

Where is the scalp location of the N170 ERP component?

A) Frontal
B) Parietal
C) Temporo-occipital
D) Central

Answer 2

C) Temporo-occipital

Question 3

What is the typical morphology of the N170 ERP component?

A) Positive deflection, smooth
B) Negative deflection, sharp
C) Positive deflection, sharp
D) Negative deflection, gradual

Answer 3

B) Negative deflection, sharp

Question 4

Which of the following brain regions is involved in generating the N170 ERP component?

A) Frontal cortex
B) Hippocampus
C) Extra-striate cortex
D) Cerebellum

Answer 4

C) Extra-striate cortex

Question 5

What is the functional meaning of the N170 ERP component?

A) Auditory processing
B) Olfactory perception
C) Face-specific processing
D) Motor coordination

Answer 5

C) Face-specific processing

Question 6

What is the primary method for representing a specific EEG/ERP activity in the spatial domain?
a. Frequency analysis
b. Temporal mapping
c. Voltage waveform plotting
d. Spline reconstruction

Answer 6

c. Voltage waveform plotting

Question 7

What determines the resolution of the topographical representation of EEG/ERP activity on the scalp?
a. Sensor sensitivity
b. Electrode material
c. Inter-electrode distance
d. Voltage amplitude

Answer 7

c. Inter-electrode distance

Question 8

What is the term used for the phenomenon where the electrical or potential field spreads out in the brain, reaching the scalp surface in an attenuated form?
a. Volume conduction
b. Electrode dispersion
c. Field attenuation
d. Spatial conduction

Answer 8

a. Volume conduction

Question 9

How is the “scalp potential map” reconstructed?
a. Through time-domain analysis
b. By using electrode clusters
c. Based on frequency modulation
d. Evenly placing sensors on the geographical scalp surface

Answer 9

d. Evenly placing sensors on the geographical scalp surface

Question 10

What is the “forward problem” in the context of EEG/ERP studies?
a. Predicting voltage distribution on the scalp
b. Solving the inverse problem
c. Simultaneous activation of dipoles
d. Determining dipole positions

Answer 10

a. Predicting voltage distribution on the scalp

Question 11

How do voltages summate in the forward problem?
a. Exponentially
b. Logarithmically
c. Linearly
d. Quadratically

Answer 11

c. Linearly

Question 12

What is the challenge in solving the inverse problem in EEG/ERP studies?
a. Simulating dipole positions
b. Predicting scalp voltage distribution
c. Determining dipole orientations
d. Infinite possibilities for dipole sets

Answer 12

c. Determining dipole orientations

Question 13

What does the inverse problem involve in EEG/ERP studies?
a. Predicting voltage distribution
b. Determining dipole positions and orientations
c. Solving the forward problem
d. Simulating noise-free data

Answer 13

b. Determining dipole positions and orientations

Question 14

How does the dipole fitting method differ from the distributed source approach?
a. Dipole fitting focuses on distributed sources, while the distributed source approach uses few dipoles.
b. Dipole fitting estimates dipole orientations, while the distributed source approach fixes dipole positions.
c. Dipole fitting estimates the position and amplitude of equivalent current dipoles, while the distributed source approach uses a spatial grid.
d. Dipole fitting and distributed source approach are synonymous terms.

Answer 14

c. Dipole fitting estimates the position and amplitude of equivalent current dipoles, while the distributed source approach uses a spatial grid.