" After Lola began using a street drug to enhance her moods, she discovered that she needed larger and larger doses of the drug in order to feel the drug's effect. Use your understanding of the neurotransmitter process to explain Lola's experience."
What is happening to Lola is called drug tolerance. It is a situation that occurs when the effect obtained from a drug is reduced due to continuous administration and this effect can only be achieved when the dose of the drug is increased.