neurotransmitters and neuromodulators

• neurotransmitter

  chemical messenger
• glutamate

  neurotransmitter, excitatory

  • increases likelihood of neuron firing
  • roles; learning, memory
• GABA

  neurotransmitter, inhibitory

  • decreases likelihood of neurons firing
  • maintains neurotransmission
• neuromodulator

  influences effects of neurotransmitters
• dopamine

  neuromodulator, excitatory

  • voluntary movement, pleasure, motivation, reward based learning
• serotonin

  neuromodulator, inhibitory

  • mood, sleep