Memory consolidation occurs as a result of repeated neural activity. This repeated firing increases the amount of neurotransmitters in the synapses, which leads to the formation of more efficient and numerous synaptic connections.

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Several key neurotransmitters, including epinephrine, dopamine, serotonin, glutamate, and acetylcholine, are understood to be involved in memory processes. While the precise function of each neurotransmitter is still a subject of ongoing research and debate, it is established that the communication between neurons facilitated by these chemicals is fundamental for the formation of new memories.

Role of Neurotransmitters in Memory

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

According to arousal theory, the intensity of an emotional experience dictates the strength of the corresponding memory. Powerful emotional events prompt the brain to release hormones and neurotransmitters that enhance memory consolidation, resulting in more durable and vivid recollections than those of neutral experiences. Conversely, events that elicit weak emotional responses tend to produce less robust memories.

Arousal Theory in Memory

Considering the role of chemical messengers in creating memories, what is the most probable impact of the medication described below on the participant's ability to learn and remember new information presented *after* taking the drug? Explain your reasoning.

Neurotransmitter Function and Memory Formation

An experimental medication is designed to treat a specific neurological condition. A major side effect observed during clinical trials is that it significantly impairs the brain's ability to form new long-term memories, while leaving old memories intact. The medication does not damage the physical structure of brain cells. Given this information, which of the following is the most likely mechanism of action for this drug's side effect?

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