Chemical Basis of Neuronal Action Potentials Quiz
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Questions and Answers

Which theory proposes that our experiences are represented by the pattern of firing across a large number of neurons?

  • Distributed representation
  • Connectionism
  • Population coding (correct)
  • Modularity

What is structural connectivity in the context of brain function?

  • The functional specialization of specific brain areas
  • The neural activity flowing through the structural network
  • The patterns distributed across the cortex
  • The road map of fibers connecting different areas of the brain (correct)

What is the main focus of the distributed representation approach to information processing in the brain?

  • The neural activity flowing through the brain's structural network
  • Patterns distributed across the cortex, involving multiple brain areas (correct)
  • Structural connections between brain areas
  • Functional connectivity in specific brain areas

Which concept is associated with the idea that specific brain areas are specialized to respond to specific types of stimuli or functions?

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

What does research suggest is just as important for perception as the activity in each individual brain area alone?

<p>Connections between brain areas (C)</p> Signup and view all the answers

What is the role of excitatory transmitters in the postsynaptic neuron?

<p>Cause depolarization and increase the likelihood of an action potential (D)</p> Signup and view all the answers

What occurs when inhibitory transmitters are released in the postsynaptic neuron?

<p>Cause hyperpolarization and decrease the likelihood of an action potential (A)</p> Signup and view all the answers

What is the function of neurotransmitters in synaptic transmission?

<p>Received by the postsynaptic neuron on receptor sites (D)</p> Signup and view all the answers

What is sparse coding in the context of neuronal activity?

<p>Occurs when a particular stimulus is represented by a pattern of firing of only a small group of neurons (C)</p> Signup and view all the answers

What happens when sodium ions cross the membranes of neurons?

<p>Cause depolarization and increase the likelihood of an action potential (A)</p> Signup and view all the answers

What did Hartline discover about the receptive fields of ganglion cells?

<p>They responded only when a small area of the retina was illuminated (D)</p> Signup and view all the answers

In what way do ganglion cell receptive fields differ from single photoreceptors?

<p>Receptive fields cover a much greater area than a single photoreceptor (B)</p> Signup and view all the answers

What did Stephen Kuffler observe about ganglion cell receptive fields in cats that Hartline did not observe in frogs?

<p>Center-surround receptive fields arranged like concentric circles (C)</p> Signup and view all the answers

How are ganglion cell receptive fields arranged, according to Stephen Kuffler's observations?

<p>In a center-surround organization (A)</p> Signup and view all the answers

What occurs when stimulating a particular point on the retina in relation to ganglion cells' receptive fields?

<p>It generally activates a number of fibers in the optic nerve (A)</p> Signup and view all the answers

How does the monitoring of the retina by ganglion cells compare to spectators at an event?

<p>Many ganglion cells monitor the retina, just as there are many spectators at an event (C)</p> Signup and view all the answers

What property did ganglion cell receptive fields have, according to Stephen Kuffler's research?

<p>'Center-surround' receptive fields (A)</p> Signup and view all the answers

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