P&C TB10 Lecture 2

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  • Created by: May2714
  • Created on: 24-05-16 12:59

1. What is the shape theory of odor receptors?

  • Whether a odorant smells the same or different to another is based on its IR vibrational spectrum
  • Lock and key theory - whether an odorant molecule smells the same or different to another is based on whether it has a complementary shape to the receptor binding site of the OSN
  • Molecules might have to be the right shape to ‘dock’ with receptor sites but then bond energies determine the final activation level
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2. What did Gelstein et al. find?

  • Men could not consciously tell tears from salt water, and showed no difference in ratings of attractiveness, sexual arousal, level of testosterone, and activity in substrates of sexual arousal
  • Men could not consciously tell tears from salt water, but rated women as less attractive, lower levels of sexual arousal, lower levels of testosterone, and reduced brain activity in substrates of sexual arousal
  • Men could consciously tell tears from salt water and rated women as less attractive, lower levels of sexual arousal, lower levels of testosterone, and reduced brain activity in substrates of sexual arousal

3. What is the role of turbinates?

  • To stop the flow of air to allow time for olfactory receptors to detect oderants
  • To break up the flow of air and force it against the olfactory epithelium
  • To force air into the lungs
  • To move mucus

4. What 2 things CAN'T you smell?

  • Carbon monoxide and menthol
  • Methane and isobutylmethoxypyrazine
  • Methane and carbon monoxdie
  • Carbon monoxide and isobutylmethoxypyrazine

5. Female are more aroused around a male experimenter if a subthreshold concentration of what is presented?

  • Water
  • Oestrogen
  • Androstadienone
  • Pheromones

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