How are your emotions and memory controlled? Let's talk about the limbic system of the brain!

Sometimes you suddenly remember an incident from your childhood and laugh. When you smell certain smells, old memories come back to you. Or you suddenly feel a great fear, anger, or great joy, right? Have you ever wondered who is behind all this? It is a collection of very special parts inside our brains that work together. In neuroscience, we call this the Limbic System . Today we are talking about this amazing system.

Simply put, what is the Limbic System?

The limbic system is a collection of interconnected structures in our brain. It performs many important functions in our daily lives. Simply put, it is the control center of our emotions and memories . The main members of this system are the hippocampus and the amygdala.

As technology has advanced, neuroscientists have discovered a lot about this system. But we still know very little about its full workings. It is such a complex, amazing system.

Where is this in the brain?

The limbic system is located inside the cerebrum, the largest part of our brain. To be precise, it is located just below the temporal lobes, directly above our earlobes .

What are the main functions of the limbic system?

This system does a lot of work inside our bodies, like a director controlling everything from behind a curtain.

• Emotions and Memory: The main function of this is to process and regulate our emotions and memory. All emotions like happiness, sadness, fear, and anger are controlled here.
• Learning and sexuality : This system is directly related to things like our learning something new and sexual stimulation.
• Behavior and Motivation: This is related to our desire to do something, our behavioral patterns, long-term memory, and even our sense of smell.
• Stress response: Because the limbic system works in conjunction with our endocrine system and autonomic nervous system, it also helps control our body's responses when we are stressed.
• Survival Instincts: This system controls some behaviors that are essential for our survival. For example:
• Feeding
• Reproduction
• Caring for children
• The fight-or-flight response in the event of danger.

Main parts of the limbic system and their functions

There are three main and most studied parts of the limbic system. Let's understand them simply with a table.

The relationship between smell and memory

Although the hippocampus was originally thought to be related to smell, that view has now largely changed. However, some smells bring back old memories. For example, the smell of bitter gourd reminds us of the old days , and some smells are strongly linked to memories in our hippocampus. This suggests that there is a connection between the two.

Other parts related to the limbic system

In addition to the three main parts, there are several other parts that work closely with the limbic system.

• Cingulate Gyrus: This helps with things like emotion regulation, pain, and fear responses. If it is damaged, it can lead to inappropriate emotional expression, learning disabilities, and a lack of fear.
• Ventral Tegmental Area (VTA) and Prefrontal Cortex: Both of these areas are involved in pleasure and addiction.These work with dopamine, the "happy hormone." When these parts are damaged, a person may have difficulty experiencing pleasure. Therefore, they may be tempted to seek pleasure through things like alcohol, drugs, and gambling.
• Basal Ganglia: This helps with our voluntary movements, eye movement, and maintaining body balance. When it is damaged, it can cause conditions like Parkinson's disease and Huntington's disease , tremors, and abnormal body postures.