Psychophysiology - Measuring bodily activity - acoustic startle reflex

3 important questions on Psychophysiology - Measuring bodily activity - acoustic startle reflex

What is acoustic startle reflex used for? And how is it measured?

  • To index anxiety or stress
  • measured by two electrodes on the eye

Why is the response after hearing a hard sound so fast?

  • Because route of synapses for hearing unexpected sounds is very short
cochlear root neurons --> nucleus reticularis pontis --> motor neurons (causes startle reflex)

What does Prepulse inhibit stand for?

  • If you warn participants about hearing a sound, by lower tone
  • body shows smaller startle repsonse

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