Neurotransmitters

• acetylcholine


  enables muscle action, learning, and memory
• dopamine


  influences movement, learning, attention, and emotion
• serotonin


  affects mood, hunger, sleep, & arousal
• norepinephrine


  alertness/arousal
• GABA


  inhibitory, blocks messages between neurons
• glutamate


  excitatory, speeds along messages between neurons
• endorphins


  influence perception of pain and pleasure, released when one experiences pain
• substance p


  involved in pain perception/immune responses
• provide an example of an acetylcholine malfunction

  alzeihmer's disease which destroys these neurotransmitters
• provide an example of a dopamine malfunction

  oversupply -> schizophrenia
• provide an example of a serotonin malfunction

  undersupply -> depression
• provide an example of a norepinephrine malfunction


  undersupply -> depressed mood
• provide an example of a gaba malfunction

  undersupply -> seizures, tremors, insomnia
• provide an example of a glutamate malfunction

  oversupply -> brain overstimulation
• provide an example of an endorphin malfunction

  oversupply + opiate drugs = lowering of natural endorphin levels
• provide an example of a substane p malfunction

  oversupply -> chronic pain