Strengths and Weaknesses

• What is a weakness of EEG related to spatial resolution?

  It has low spatial resolution.
• What is the penetration depth of fNIRS?

  Cortical
• How does an EEG detect brain activity?

  Tiny electrodes attached to the scalp
• What analogy is used to explain low spatial resolution in EEG?

  Finding a specific song on a vinyl record.
• What is the spatial resolution of MEG?

  5-9 cm
• What is the spatial resolution of fMRI?

  0.3 mm
• What do the electrodes in an EEG detect?

  Electrical signals from brain neurons
• What analogy is used to describe artifacts in EEG readings?

  Static noise on a radio.
• Why is EEG considered an indirect measurement?

  It detects signals from the scalp, not the brain.
• What does fMRI measure?

  BOLD signal
• What is the temporal resolution of fNIRS?

  1-10 Hz
• What is the main competitor technique to EEG that measures blood flow?

  fNIRS
• What is the penetration depth of MEG?

  Deep
• What can an EEG help identify during sleep?

  Different stages of sleep
• What advantage does EEG provide in terms of monitoring brain activity?

  It allows real-time monitoring of brain activity.
• How does EEG demonstrate immediate shifts in brainwaves?

  • Shows changes when falling asleep
  • Displays changes when waking up
• What does high temporal resolution in EEG mean?

  It captures brain activity changes with precision.
• Why is EEG considered cost-effective?

  EEG machines are relatively affordable.
• What brain state is indicated by an EEG when a person is awake and active?

  Fast brainwaves
• What is the penetration depth of fMRI?

  Full head
• How does EEG compare to other brain imaging techniques in terms of temporal resolution?

  • EEG provides the best temporal resolution
  • Other techniques have lower temporal resolution
• What does PET measure?

  Blood flow and glucose
• What is the spatial resolution of PET?

  4 mm
• What is the temporal resolution of MEG?

  Greater than 1000 Hz
• What are the strengths and weaknesses of EEG compared to MRI and PET?

  Strengths:

  • Best temporal resolution

  
  

  Weaknesses:

  • Lacks spatial resolution of MRI and PET
• What does an EEG test record?

  Brain activity
• What is the temporal resolution of PET?

  Less than 0.1 Hz
• What does MEG measure?

  Magnetic signals
• What does EEG stand for?

  Electroencephalogram
• How do artifacts affect EEG readings?

  They can distort the accuracy of the readings.
• What is the penetration depth of PET?

  Full head
• How does the indirect nature of EEG measurements affect its interpretation?

  It complicates understanding of neural activity.
• How can low spatial resolution affect EEG results?

  It limits the precision of brain activity mapping.
• What is the temporal resolution of fMRI?

  1-3 Hz
• What type of measurement does EEG provide?

  Indirect measurement of brain activity.
• Why is low spatial resolution a limitation of EEG?

  It cannot pinpoint exact brain activity locations.
• What is the spatial resolution of fNIRS?

  2-3 cm
• What is a key strength of EEG regarding its invasiveness?

  It is non-invasive.
• What would an EEG show if a person is sleeping soundly?

  Slow brainwaves
• How does an EEG help in identifying brain states?

  By showing different brainwave patterns