Question: Read the following impacts on different neurotransmitters: When Tyler uses this substance, his dopamine levels increase. When taking this drug, Rodan experiences an increase in his available levels of GABA. Stephanie experiences an increase in serotonin when using this drug. Brigitte uses this medication to increase her available levels of internal opioids. Which change in neurotransmitter is likely to result from caffeine? Select the best answer. Answer