TB10 B&B Lecture 2; How can multiple neurons represent information?

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  • Created by: mint75
  • Created on: 23-05-16 12:57

1. What is sparsity?

  • The proportion of neurons that fire in a given time window
  • Mixtures that produce the same activity as a spectral colour
  • A subset of the grandmother cell hypothesis
  • How many neurons are found in a space which codes for a particular stimulus (influences gross firing rate)
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Other questions in this quiz

2. How can the ambiguity in single neuron bell curves be resolved?

  • Decreasing the amount of presented stimulus
  • Considering the population vectors and neurons in surrounding areas, different patterns seen at each stimulus value
  • Adding another neuron, different patterns seen at each stimulus value
  • Increasing the amount of presented stimulus

3. What is the name for a pattern that cant be distinguished aka a indistinguishable percept?

  • Metamers, mixtures that produce the same activity. Cant be distinguished from spectral colours
  • Spectral colours, mixtures that produce the same activity. Cant be distinguished from metamers.

4. Which is more likely to exist in the brain?

  • Sparse/dense population codes
  • Grandmother cells

5. What is breadth of tuning in relation to sparsity?

  • The proportion of stimuli to which a given neuron responds
  • A subset of the grandmother cell hypothesis
  • How many neurons are found in a space which codes for a particular stimulus (influences gross firing rate)
  • The proportion of neurons that fire in a given time window

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