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# System prepended metadata

title: 單選題

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## 單選題
1. Which statement is FALSE?
A. Structural and functional MRI images are acquired using the different scanner.
B. Different types of brain images can be generated to emphasize contrast related to different tissue characteristics.
C. All MRI techniques rely on a core set of physical principles.
D. By manipulating atomic nucleus and measuring the generated signals, we obtain MR signals. 

A

2. The fMRI measurements is based on 
A blood pressure 
B blood sugar level
C blood oxygen level
D blood lipids

C

3. Which statement is TRUE about MRI?
A The structural (T1) images bring higher spatial resolution than the functional (T2*) images.
B The structural (T1) images bring higher temporal resolution than the functional (T2*) images.
C The structural (T1) images can relate changes in signal to an experiments manipulation.
D The functional (T2*) images can distinguish different types of tissue.

A

4. Which of the following neuroimaging technique use intrinsic energy source?
A Structural MRI
B Functional MRI
C PET
D MEG

D

5. Which statement is FALSE about spatial coverage?
A fMRI indiscriminately sensitive to activity throughout the entire brain.
B PET is mainly sensitive to area near the brain surface.
C MEG have inhomogeneous sensitivity profiles.
D Intracranial EEG cover only limited parts of the brain volume.

B

6. Who was the first person to record human EEG？
A Elon Musk.
B Richard Caton.
C Hans Berger.
D James Clerk Maxwell.

C

7. In which year was the first human EEG recording successfully completed?
A 1873.
B 1924.
C 1941.
D 1998.

B

8. Which of the following statements about wet EEG electrodes is incorrect?
A They require electrolyte to function properly.
B They have higher impedance compared to other types.
C They require a longer preparation time before use.
D They necessitate skilled personnel for correct application.

B

9. Which of the following ranges correctly represents the frequency range of **Gamma** waves in EEG features?
A 4–8 Hz
B 8–12 Hz
C 13–30 Hz
D 31–70 Hz

D

10. Which of the following ranges correctly represents the frequency range of **Alpha** waves in EEG features?
A 4–8 Hz
B 8–12 Hz
C 13–30 Hz
D 31–70 Hz

B
## 填充題
1. The International ________ System is based on anatomical markers and is used for the positioning of electrodes in EEG studies.

10-20 or 10-10

2. __________ electrodes require electrolyte to function properly and are known for their use of a gel to enhance conductivity.

Wet

3. __________ electrodes are the standard configuration in current EEG studies, widely used for their low impedance and high signal quality.

Ag/AgCl

4. EEG electrodes that do not require electrolyte and have higher impedance are known as __________ electrodes, which are designed for easier setup and minimal preparation.

dry

5. Please fill in the correct proportions for the electrode placements in the top view diagram of the 10-20 system below.
![image](https://hackmd.io/_uploads/BycrcsWl0.png)

## 問答題
1. There are some properties of brain imaging methods. List at least three.
    1. Physiological variables targeted
    2. Degree of invasiveness
    3. Spatial resolution
    4. Spatial coverage 
    5. Temporal resolution 
2. The fMRI measurements are acquired in frequency domain, and how to convert it to time domain image.
    1. Inverse Fourier Transform 
3. Briefly describe what the k-space of fMRI signals represent in low/high spatial frequencies respectively.
    1. Low : Parts of the object that change in a spatially slow manner (Contrast)
    2. High : small structures whose size is on the same order as the voxel size (Tissue boundaries)
4. List at least 3 neuroimaging methods (The abbreviations are allowed).
    1. EEG
    2. MEG 
    3. PET
    4. MRI
    5. NIRS 
5. The EEG features prominent oscillations divided into frequency bands including : (There is no need to write the definition.)
    1. Delta
    2. Theta
    3. Alpha
    4. Beta
    5. Gamma
