Uncover the Intricacies of Human Electrophysiology and ECoG in this Quiz!
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Questions and Answers

Which technique involves placing electrodes directly on the surface of the brain?

  • fMRI
  • ECoG (correct)
  • EEG
  • MEG

What is the primary purpose of ECoG?

  • To determine the location of seizures in epilepsy patients (correct)
  • To record brain activity during sleep
  • To measure the magnetic fields produced by brain activity
  • To identify the specific frequency of brain waves

What type of brain activity does EEG primarily measure?

  • Excitatory potentials
  • Electrical fields
  • Ongoing activity (correct)
  • Alpha frequency

Who is credited with the discovery of alpha frequency in EEG?

<p>Hans Berger (A)</p> Signup and view all the answers

Why are at least two electrodes required for EEG recordings?

<p>To measure the electrical potential difference between two points (D)</p> Signup and view all the answers

What does ECoG show when there is a cluster of neurons that are excitatory?

<p>Increased electrical field (D)</p> Signup and view all the answers

What is the primary difference between positive and negative electrical potentials in ECoG?

<p>There is no difference between positive and negative potentials (C)</p> Signup and view all the answers

Which technique provides more detailed brain activity information, ECoG or EEG?

<p>ECoG (B)</p> Signup and view all the answers

What is the primary purpose of EEG?

<p>To show the general states of a person (B)</p> Signup and view all the answers

Which technique records brain activity using magnetic fields?

<p>MEG (A)</p> Signup and view all the answers

Which imaging technique has the advantage of higher spatial and temporal resolution compared to PET?

<p>fMRI (A)</p> Signup and view all the answers

Which imaging technique is known for being more flexible because it allows for randomization of conditions?

<p>FMRI (A)</p> Signup and view all the answers

Which imaging technique uses near-Infrared light to look at the brain?

<p>Optical Imaging (B)</p> Signup and view all the answers

Which imaging technique is known for being less precise compared to other methods discussed?

<p>Optical Imaging (C)</p> Signup and view all the answers

Which imaging technique is useful because it allows for mobility and can be strapped onto an individual's head?

<p>Optical Imaging (B)</p> Signup and view all the answers

Which imaging technique measures changes in relative hemoglobin concentration?

<p>Optical Imaging (A)</p> Signup and view all the answers

Which neurostimulation technique involves stimulating one part of the brain and observing the effects?

<p>TMS (C)</p> Signup and view all the answers

Which neurostimulation technique is known for being less invasive compared to TMS?

<p>tDCS (C)</p> Signup and view all the answers

Which neurostimulation technique permits decreasing or increasing excitability of the brain?

<p>tDCS (B)</p> Signup and view all the answers

Which neurostimulation technique has the advantage of being much cheaper compared to TMS?

<p>tDCS (C)</p> Signup and view all the answers

Which neuroimaging technique can show specific instances of brain activity related to a specific event?

<p>EEG (D)</p> Signup and view all the answers

Which neuroimaging technique is known for its speed but has limitations in localizing brain activity?

<p>EEG (D)</p> Signup and view all the answers

Which neuroimaging technique can localize brain activity better than EEG and has the same timing as EEG?

<p>MEG (D)</p> Signup and view all the answers

Which neuroimaging technique relies on blood flow to determine brain activity?

<p>fMRI (C)</p> Signup and view all the answers

Which neuroimaging technique has a delayed response due to the time it takes for blood flow changes to occur?

<p>PET (C)</p> Signup and view all the answers

Which neuroimaging technique is not commonly used in cognitive neuroscience research?

<p>PET (C)</p> Signup and view all the answers

Which neuroimaging technique measures the magnetic field generated by electrical activity in the brain?

<p>MEG (D)</p> Signup and view all the answers

Which neuroimaging technique has more precision in structural imaging compared to functional imaging?

<p>fMRI (C)</p> Signup and view all the answers

Which neuroimaging technique can determine brain activity by measuring the ratio of deoxygenated hemoglobin to oxygenated hemoglobin?

<p>fMRI (C)</p> Signup and view all the answers

Which neuroimaging technique uses electrical potentials to capture brain activity?

<p>EEG (C)</p> Signup and view all the answers

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