Brain Imaging Techniques: Unlocking the Secrets of the Mind

Question 1

What is the function of a contrast agent in fMRI?

Accepted Answer

To enhance the BOLD signal in specific brain regions

Answer

To suppress neural activity in certain areas

Answer

To improve the spatial resolution of images

Answer

To minimize motion artifacts

Question 2

Which neuroimaging technique measures brain activity by detecting changes in blood oxygenation levels?

Accepted Answer

fMRI

Answer

EEG

Answer

MEG

Answer

PET

Question 3

Which brain imaging technique measures neural activity by detecting changes in blood flow?

Accepted Answer

fMRI

Answer

EEG

Answer

MEG

Answer

TMS

Question 4

Which of the following measurements cannot be obtained using MEG?

Accepted Answer

Cortical thickness

Answer

Magnetic field strength

Answer

Neural oscillations

Answer

Connectivity between brain regions

Question 5

How does TMS contribute to the study of cognitive psychology?

Accepted Answer

By stimulating specific brain regions and observing the effects

Answer

By providing a non-invasive method of measuring brain activity

Answer

By enhancing the spatial resolution of fMRI

Answer

By lowering the cost of EEG

Question 6

How does MEG compare to EEG in terms of spatial resolution?

Accepted Answer

MEG has higher spatial resolution

Answer

EEG has higher spatial resolution

Answer

They have the same spatial resolution

Answer

Spatial resolution is not applicable to these techniques

Question 7

Which of the following is NOT a commonly used brain imaging technique in cognitive psychology?

Accepted Answer

PET scan

Answer

fMRI

Answer

EEG

Answer

MEG

Question 8

What is the primary principle underlying fMRI (functional magnetic resonance imaging)?

Accepted Answer

Detecting changes in blood flow in the brain

Answer

Measuring electrical activity in the brain

Answer

Imaging brain structures in high resolution

Answer

Tracking eye movements during cognitive tasks

Question 9

MEG (magnetoencephalography) is particularly useful for studying:

Accepted Answer

Neural oscillations associated with sensory processing

Answer

Activity in deep brain structures

Answer

Large-scale brain networks involved in complex cognitive tasks

Answer

Specific brain areas responsible for language comprehension

Question 10

What is the main component of an fMRI scanner?

Accepted Answer

A powerful magnet

Answer

A computer that processes brain images

Answer

A device that injects radioactive tracers into the brain

Answer

A set of electrodes that record electrical activity

Question 11

fMRI faces a notable limitation in its temporal resolution. Propose innovative approaches that could potentially mitigate this limitation in the future.

Accepted Answer

Advancements in data acquisition and analysis techniques to enhance speed

Answer

Enlarging the sample size of fMRI studies

Answer

Exploring alternative neuroimaging techniques like EEG or MEG

Question 12

Which of the following is a potential future application of advanced neuroimaging techniques?

Accepted Answer

Early detection of neurodegenerative diseases

Accepted Answer

Personalized treatment for mental health disorders

Accepted Answer

Brain-computer interfaces for communication

Answer

Predicting academic success solely based on brain scans

Question 13

Which brain imaging technique employs principles of blood-oxygen-level-dependent (BOLD) contrast to measure changes in brain activity?

Accepted Answer

fMRI

Answer

EEG

Answer

PET

Answer

MEG

Question 14

What brain imaging technique directly records electrical signals generated by neural activity?

Accepted Answer

EEG

Answer

fMRI

Answer

MRI

Answer

MEG

Question 15

Which brain imaging technique utilizes magnetic field detectors to measure brain activity?

Accepted Answer

MEG

Answer

fMRI

Answer

EEG

Answer

PET

Question 16

What fundamental distinction exists between MEG and EEG?

Accepted Answer

MEG measures magnetic fields, while EEG measures electrical activity

Answer

MEG has higher spatial resolution than EEG

Answer

MEG is more sensitive than EEG

Question 17

What ethical considerations are paramount when conducting brain imaging research involving human participants?

Accepted Answer

Obtaining informed consent, ensuring participant privacy, and minimizing potential risks

Answer

Cost-effectiveness

Answer

Time constraints

Question 18

What primary disadvantage is associated with PET scanning in cognitive psychology research?

Accepted Answer

Use of radioactive tracers

Answer

Poor spatial resolution

Answer

Limited availability of scanners

Question 19

Which brain imaging technique measures the change in blood flow to different brain regions, providing insights into neuronal activity?

Accepted Answer

fMRI

Answer

EEG

Answer

MEG

Answer

PET

Question 20

Compared to EEG and MEG, a significant advantage of fMRI is its:

Accepted Answer

Superior spatial resolution

Answer

Greater non-invasiveness

Answer

Higher temporal resolution

Answer

Lower cost

Question 21

Which brain imaging technique is primarily used to detect electrical activity in the brain?

Accepted Answer

EEG

Answer

fMRI

Answer

MEG

Answer

PET

Question 22

MEG predominantly measures the:

Accepted Answer

Magnetic fields produced by neural currents

Answer

Electrical currents in the brain

Answer

PET tracers within the brain

Answer

Blood flow in the brain

Question 23

In the analysis of EEG recordings, what technique is commonly employed?

Accepted Answer

Time-frequency analysis

Answer

Correlation analysis

Answer

Variance analysis

Answer

Regression analysis

Question 24

One potential application of fMRI in cognitive psychology is:

Accepted Answer

Investigating the neural basis of memory formation and retrieval

Answer

Monitoring brain tumors

Answer

Diagnosing epilepsy

Question 25

A typical experimental design in fMRI studies involves:

Accepted Answer

Presenting stimuli while simultaneously recording brain activity

Answer

Injecting radioactive tracers

Answer

Measuring brain activity during sleep

Answer

Implanting electrodes into the brain