QUIZ 2: Cognitive Neuroscience research Methods & Motor Control

Question 1

Electroencephalography (EEG) is thought to primarily measure

Answer 1

Synchronous synaptic activity in pyramidal cells

Question 2

Diffusion tensor imaging (DTI) measures which of the following in order to understand neural connectivity?

Answer 2

The direction in which water flows in white matter tracts

Question 3

Functional magnetic resonance imaging (fMRI) works by detecting differences in the magnetic properties of what materials?

Answer 3

Oxygenated and deoxygenated blood

Question 4

Which statement below is the correct definition of event-related potentials (ERPs)?

Answer 4

Electrical potentials time-locked to a set of events and averaged

Question 5

EEG generators are called ____, which are regions with an electrical current that is positive at one end and negative at the other, like a battery.

Answer 5

Dipoles
(can’t usually infer location of the dipoles, or even how many there are, just by looking at the EEG signal. But a set of dipoles contributes to the signal that we observe)

Question 6

Which of these is a disadvantage of MRI

Answer 6

Cannot be used by ppl with pacemakers,
or anyone with metal in their body that is not connected to hard tissue

Question 7

Which of the following are both disadvantages to using TMS and optical imaging?

Answer 7

They are both unable to target subcortical brain regions

Question 8

Which of the following is a major limitation of EEG:

Answer 8

localization of activity to particular brain regions is difficult
(while EEG has very good TEMPORAL [timing] resolution, it is doesn’t have very good SPATIAL [location] resolution)

Question 9

Which is the name for the specialized synapse btwn a neuron ad muscle fibers?

Answer 9

Neuromuscular junction

Question 10

The medial pathway linking the brain to the muscles controls what kind of movements

Answer 10

Movement of the trunk and proximal limb muscles