Memory and the hippocampus

The hippocampus is a small, seahorse-shaped structure located deep within the brain’s temporal lobe. It serves as a vital control centre for how we process the world around us, primarily driving two critical functions:

Memory Consolidation: The hippocampus acts like a temporary saving station for new data. While it doesn’t actually store your long-term memories, it is essential for transforming short-term memories into permanent ones, which are then transferred and stored throughout the cerebral cortex. Without it, you would be unable to retain new facts, names, or daily experiences.

Spatial Navigation: It creates a ‘cognitive map’ of your physical environment. This internal GPS helps you remember layouts, navigate through familiar neighbourhoods, and dynamically figure out how to get from point A to point B.

Did you know? The hippocampus is one of the very few regions in the adult brain capable of generating entirely new neurons, a process called neurogenesis, which is vital for learning, memory retention, and emotional regulation.

Because of its heavy workload, the hippocampus is highly sensitive. Damage to this area whether from Alzheimer’s disease, stroke, or severe stress typically results in anterograde amnesia, which is the inability to form new long-term memories, even though older memories from childhood usually remain completely intact.

While the brain was once thought to be static, scientists now agree that the hippocampus continually produces new granule cells throughout life in most mammals, including humans. These newly formed neurons play a vital role in memory formation, spatial navigation, and cognitive flexibility.

Memory is an important part of learning, assimilation and knowledge retention and we will look at this, as well as Cognitive Information Processing Theory (‘CIP’) in respect of learning (and teaching), as this site grows.

While memory aids in our learning, how to use our memory is also something that needs to be learned. We learn organically (sub-consciously), but also on purpose which is what makes this part (as well as others parts) of the brain so interesting.

We organically create memories based on what is attractive to remember. Memorable situations whether they be negative or positive can be stored for many years, and in some instances all of our lives. Negative memories may stop us from doing something and make us tentative, whereas positive memories are more likely to motivate us to do something again or progress further. This aligns with the brain’s reward system (something else we will look into as this site progresses). 

One topic that encourages fear of failure is forgetting something, particularly if certain learning topics are concluded with a test. Many of us will fear failing a test, even if we are affluent in the knowledge of the subject, but on a more day to day topic, we often have a fear of forgetting to do something.

Unless there is damage to the brain, for most of us creating memories is a standard process. Memory aligns with ‘practice’ as this builds retention, but there is also a difference between learning and memory and that is what this site will look into more as it develops.