Intelligence in the Brain: Lecture 8B
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Questions and Answers

What did brain imaging studies help shift intelligence research away from?

  • Psychometric approaches (correct)
  • Controversies about brain characteristics
  • PET scans of the brain
  • Neuroscientific perspectives

What technology was used in the early 1970s to investigate brain function indirectly?

  • Positron emission tomography (PET)
  • EEG recordings from scalp electrodes (correct)
  • MRI scans of the brain
  • Blood and urine analysis

What accumulates in brain areas working the hardest in PET scans?

  • Neurotransmitters
  • Electrical activity
  • PET scanning dye
  • Radioactive glucose (correct)

What did PET scans show in the living brain?

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

What is one of the even more amazing imaging technologies mentioned in the lecture?

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

What did brain researchers use to measure the electrical activity of the brain in the early 1970s?

<p>EEG recordings from scalp electrodes (A)</p> Signup and view all the answers

What does a computerized axial tomography (CAT) scan show?

<p>Brain structure as X-rays pass through the head (C)</p> Signup and view all the answers

What is the main limitation of a PET scan compared to a CAT scan?

<p>It cannot show brain structure (D)</p> Signup and view all the answers

When did the first PET scanners become available?

<p>About 1980 (D)</p> Signup and view all the answers

What hypothesis of intelligence was proposed based on the PET study in 1988?

<p>Brain efficiency hypothesis of intelligence (C)</p> Signup and view all the answers

What did the PET study of learning in the early 1990s involve?

<p>Tetris, a popular computer game (C)</p> Signup and view all the answers

What was one of the main findings of the PET study of intelligence in 1988?

<p>More brain activity was associated with worse performance (D)</p> Signup and view all the answers

What did researchers propose about higher intelligence based on the PET study in 1988?

<p>It requires less brainwork (B)</p> Signup and view all the answers

What did researchers attempt to understand after the surprising finding in 1988?

<p>How exactly brain efficiency might relate to intelligence (A)</p> Signup and view all the answers

What is one of the main limitations of a CAT scan compared to a PET scan?

<p>It cannot show brain function (A)</p> Signup and view all the answers

What can a PET scan show depending on what the brain is doing?

<p>Different patterns based on reasoning or problem solving (A)</p> Signup and view all the answers

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