3. Habituation

• Define habituation

  (Mr Chandel making fire go near Abdul's face, he wont ever get used to it)

  A change in response as a result of repeated unimportant stimulation
• What would habituation lead to?

  Decrease in strength

  Decrease in occurrence

  (Of behaviour)
• What are the advantages of habituation?

  ✔️:

  . Prevents waste of energy

  . So we can spend more time and energy on other things

  e.g. reproduction
• What are the disadvantages of habituation?

  ❌:

  . It could be deadly for an animal to become habituated to something that has the potential to be dangerous
• Tell me the steps that occur at the synapse using this image

  1. A.P arrives at the axon terminal
  2. Voltage-gated Ca2+ channels open
  3. Ca2+ enters the presynaptic neuron
  4. Ca2+ signals to neurotransmitter vesicles
  5. Vesicles move to membrane and bind
  6. Neurotransmitters released via exocytosis
  7. Neurotransmitters bind to receptors on the post-synaptic membrane
  8. AP generated in postsynaptic cell
• In habituation, what step of this synapse stuff would be affected?

  2. Voltage-gated Ca2+ channels open

  These Ca+ channels are inhibited by habituation