neurotransmitters

• what do excitatory neurotransmitters do?

  make it more likely to create action potentials in the postsynaptic neurons
• why do excitatory neurotransmitters make action potentials more likely?

  they increase the postsynaptic neurons positive charge
• what do inhibitory neurotransmitters do?

  make it less likely that a new action potential will be created in the postsynaptic neuron
• why do inhibitory neurotransmitters make new action potentials less likely?

  they increase the postsynaptic neurons negative charge