Let’s unlock memory; see how brain chemistry shapes learning

Understanding the neuroscience of learning and memory is one of the most important skill sets that a student can work to obtain to optimise their study habits. How we take in new information and retain what we’ve learnt is connected with the intricate dance of neurotransmitters and neural pathways. Tapping into these mechanisms, learners can tap the power of their brain chemistry for better memory retention.

Formation and retrieval of memory is a function that is largely served by the region known as the hippocampus in the brain; however, there are several major neurotransmitters involved in the process. Dopamine, sometimes referred to as the ‘reward molecule’, plays an important role in encoding memories. If something someone learns or even if something happens is rewarding, then a burst of dopamine signals is released, heightening neural activity and helping to drive the memory in. This is why incorporating fun into your study material maximises learning.

Acetylcholine is another key neurotransmitter; it plays a fundamental role in attention and neuroplasticity — basically, the brain’s ability to adapt and create new neural connections. Higher acetylcholine levels enhance the ability to focus or pay attention and provide more depth of thought; you will be able to acquire dense, complex material more easily. Using study strategies that require active participation, like answering a discussion question or teaching someone else, will help keep your acetylcholine levels high, therefore helping you retain this learned material.

The neurotransmitter serotonin is also implicated, especially in the consolidation of mood and self-esteem, which indirectly affects memory consolidation. Stress and anxiety are known to initiate the production of cortisol, which may harm the hippocampus and prevent the brain from doing its best work in forming new memories. Thus, reducing negative affective states through mindfulness, proper sleep, and a conducive study environment is very important to effective learning.

The role of sleep cannot be overemphasised in the consolidation of memory. This stage has brought about reorganisation and strengthening of what was learned in the day, especially the deep REM stage. Thus, students will need to prioritize quality hours of sleep to facilitate neurochemical processes that imprint new neural pathways.

Exposure to information over a spaced period, known as spaced repetition, is an effective study technique. This process takes into account that each time the memory circuit is activated, the neurons strengthen connections. Flashcards and even review sessions can take advantage of this process so information can be transferred more effectively from short-term memory into long-term memory.

In a nutshell, it can be said that the chemistry of our brain plays an important role in learning and memory. Understanding and applying the principles of neuroscience can help students optimise their study habits to retain as much material as possible. Enjoyment in learning, active engagement with the material, emotional stability, adequate sleep, and spaced repetition are all strategies based on the science of how our brains work.