Brain Stimulation & Neuron Recordings in Psychology
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Questions and Answers

What is the purpose of Transcranial Magnetic Stimulation (TMS) as described in the text?

  • To cause a population of neurons to depolarize or hyperpolarize (correct)
  • To record single neuron activity
  • To directly measure action potentials
  • To cancel out random noise in brain signals

    • What is one benefit of EEG/ERP according to the text?

  • Excellent spatial resolution
  • Can be used to ask developmental questions (correct)
  • Very expensive
  • Poor time resolution

    • What is the main difference between EEG and MEG as mentioned in the text?

  • EEG is a non-invasive technique, while MEG is invasive
  • MEG is more cost-effective than EEG
  • EEG measures magnetic activity, while MEG measures electric activity (correct)
  • EEG has better spatial resolution than MEG

    • Which technique provides a magnetic counterpart to EEG or ERP?

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

    How does EEG handle the signal-to-noise problem?

    <p>By canceling out noise over time with repetitions</p> Signup and view all the answers

    What is the main downside of Magnetoencephalography (MEG) as mentioned in the text?

    <p>Very expensive</p> Signup and view all the answers

    What does Functional Magnetic Resonance Imaging (fMRI) measure as stated in the text?

    <p>The brain's response to an experience</p> Signup and view all the answers

    What does EEG stand for?

    <p>Electroencephalography</p> Signup and view all the answers

    Which technique allows for direct measurement of action potentials?

    <p>Single Neuron Recordings</p> Signup and view all the answers

    What is the primary purpose of Transcranial Magnetic Stimulation (TMS) as discussed in the text?

    <p>To stimulate a population of neurons non-invasively</p> Signup and view all the answers

    What does EEG primarily measure?

    <p>Synchronous activity from thousands of neurons</p> Signup and view all the answers

    What is one distinct advantage of Magnetoencephalography (MEG) over EEG as mentioned in the text?

    <p>Higher spatial resolution</p> Signup and view all the answers

    In EEG and ERP recordings, what problem is solved by conducting many repetitions of trials?

    <p>Signal-to-noise problem</p> Signup and view all the answers

    What makes Single Neuron Recordings unique among the brain measurement techniques discussed?

    <p>Directly records action potentials</p> Signup and view all the answers

    What is the main limitation of Functional Magnetic Resonance Imaging (fMRI) according to the text?

    <p>Poor time resolution</p> Signup and view all the answers

    How does Transcranial Magnetic Stimulation (TMS) affect a population of neurons?

    <p>Stimulates them non-invasively</p> Signup and view all the answers

    What distinguishes event-related potentials (ERPs) from a typical EEG signal?

    <p>'Small, brief changes'</p> Signup and view all the answers

    What is the key advantage of Magnetoencephalography (MEG) over EEG?

    <p>Better spatial resolution</p> Signup and view all the answers

    How does Transcranial Magnetic Stimulation (TMS) influence a group of neurons?

    <p>Depolarize or hyperpolarize</p> Signup and view all the answers

    What is the primary function of event-related potentials (ERPs) in EEG recordings?

    <p>Response to an experience</p> Signup and view all the answers

    What is the main limitation of Functional Magnetic Resonance Imaging (fMRI)?

    <p>Very expensive</p> Signup and view all the answers

    How does EEG handle the signal-to-noise problem?

    <p>By conducting many repetitions of trials</p> Signup and view all the answers

    What is the unique feature of Single Neuron Recordings among the brain measurement methods discussed?

    <p>Direct measurement of action potentials</p> Signup and view all the answers

    What does EEG primarily aim to measure?

    <p>Synchronous activity of neurons</p> Signup and view all the answers

    Which brain measurement technique offers a magnetic equivalent to EEG or ERP?

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

    What is the key benefit of EEG/ERP despite its limitations?

    <p>Excellent time resolution</p> Signup and view all the answers

    What is the main drawback of Magnetoencephalography (MEG) despite its advantages?

    <p>Very expensive</p> Signup and view all the answers

    How does Transcranial Magnetic Stimulation (TMS) affect a group of neurons?

    <p>Causes a population of neurons to depolarize or hyperpolarize</p> Signup and view all the answers

    What problem is overcome by conducting many repetitions of trials in EEG and ERP recordings?

    <p>Signal-to-noise problem</p> Signup and view all the answers

    What is the primary goal of using event-related potentials (ERPs) in EEG recordings?

    <p>Capture brief changes in EEG signals in response to experiences</p> Signup and view all the answers

    What is a key advantage of EEG/ERP despite its limited spatial resolution?

    <p>Excellent time resolution</p> Signup and view all the answers

    What does Magnetoencephalography (MEG) offer as a benefit over EEG?

    <p>Better spatial resolution</p> Signup and view all the answers

    What is the primary purpose of Functional Magnetic Resonance Imaging (fMRI) as mentioned in the text?

    <p>Measures brain activity by detecting changes in blood flow</p> Signup and view all the answers

    What key function does Single Neuron Recordings serve among the discussed brain measurement techniques?

    <p>Directly measure action potential</p> Signup and view all the answers

    What is the technique used to measure the summation of synchronous activity from thousands or millions of neurons with similar spatial orientation?

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

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