True or false: In a patch-clamp experiment, a fine glass pipette can record either voltage across a single neuron's membrane or current flowing through it.
8 Methods in Neuroscience Online Quiz Questions
Use this free practice quiz with 20 questions to review 8 Methods in Neuroscience, test your knowledge, and prepare for your next test or exam.
Which statement best describes structural magnetic resonance imaging (MRI)?
- A
It depicts anatomy.
- B
It directly records the firing of individual neurons.
- C
It selectively activates genetically targeted cells with light.
- D
It measures magnetic fields produced by brain activity.
In fMRI, what does the acronym BOLD stand for?
During calcium imaging, fluorescent indicator brightness changes with intracellular .
True or false: EEG directly records the spikes of individual neurons.
- A
True
- B
False
A researcher wants to activate or inhibit selected cells relatively rapidly using light. Which method best fits this goal?
- A
It uses drugs to influence engineered receptors, with effects that typically develop and fade slowly.
- B
It measures changes in blood oxygenation and flow associated with neural activity.
- C
It uses genetic tools to make selected cells responsive to light.
- D
It detects magnetic fields produced by brain activity without electrodes.
Which noninvasive method detects magnetic fields produced by brain activity?
Chemogenetics uses receptors to allow selected cells to be influenced by a drug.
Select all methods that can be used to perturb neural activity when testing a causal hypothesis.
- A
Lesions or inactivation
- B
Electrical stimulation
- C
Pharmacology
- D
Optogenetics
- E
Chemogenetics
- F
Structural MRI
What can an array of extracellular recording sites capture?
- A
Only the voltage across one cell's membrane
- B
Blood oxygenation changes, but not electrical activity
- C
Spike times from multiple neurons and slower local field potentials
- D
Only the magnetic fields produced by brain activity
Select all limitations that can complicate interpretation of a lesion experiment.
- A
A lesion may affect neighboring tissue.
- B
A lesion measures only the activity of the targeted cells.
- C
The brain may adapt after a lesion.
- D
Lesions always produce effects that develop and fade more slowly than drug effects.
A researcher needs to track rapid changes in brain activity noninvasively across the scalp. Which method is the best fit?
- A
Structural MRI
- B
EEG
- C
Chemogenetics
- D
Calcium imaging
A neural population is active during a movement. Describe an experiment to test whether that population contributes causally to the movement. Include what you would measure before and after changing the population's activity, and one way to strengthen the conclusion.
A researcher needs an image of brain anatomy and does not need to measure task-related activity. Which method is the best fit?
- A
Functional MRI (fMRI)
- B
Structural MRI
- C
Calcium imaging
- D
Electroencephalography (EEG)
What is the name of the measurement property that describes how quickly a neuroscience method can track changes?
A study needs noninvasive measurements of rapid brain activity and specifically wants to record voltage differences at the scalp. Which method should it use?
- A
Electroencephalography (EEG)
- B
Magnetoencephalography (MEG)
- C
Patch-clamp recording
- D
Functional MRI (fMRI)
A researcher wants to measure current flowing through one neuron's membrane in prepared tissue. Which method is designed for this measurement?
- A
An EEG electrode at the scalp
- B
An extracellular array near many neurons
- C
A patch-clamp pipette on a single neuron
- D
A structural MRI scan
What three-letter signal abbreviation does functional MRI commonly use as an indirect measure associated with neural activity?
True or false: Chemogenetic effects typically develop and fade more slowly than optogenetic effects.
- A
True
- B
False
In an animal study, a team wants to observe activity across many identified, labeled cells. Which method best fits, while requiring them to account for signals that are indirect and generally slower than electrical spikes?
- A
Patch-clamp recording
- B
EEG
- C
Structural MRI
- D
Calcium imaging