Silent synapses are "silent" because they:

Silent synapses are "silent" because they:

Silent synapses are "silent" because they:



  1. have no presynaptic terminal.
  2. have AMPA receptors but no NMDA receptors.
  3. have NMDA receptors but no AMPA receptors.
  4. lack voltage-gated sodium channels.
  5. are continuously inhibited and so cannot be activated.

Answer: 3