The Left Frontal Lobe: Understanding its Function, Symptoms, and Damage

If you or someone you know has experienced an injury or damage to the left frontal lobe, it’s important to understand what this area of the brain does and how it affects cognitive and behavioral functions. The frontal lobe plays a critical role in decision-making, attention, memory, and planning, among other mental processes.

In this article, we will explore various aspects of the left frontal lobe, ranging from its location and function to the symptoms of damage and the causes of injury. We’ll also discuss how the right frontal lobe is involved in some of these processes and how parietal lobe function can overlap with frontal lobe function.

Where is the Left Frontal Lobe Located?

The frontal lobe is located at the front of the brain, just above the eyes, and it runs from one ear to the other. It is divided into two hemispheres, the left and the right. The left frontal lobe controls the right side of the body, while the right frontal lobe controls the left side.

What is the Function of the Frontal Lobe?

The frontal lobe is responsible for many functions, including motor skills, language, memory, attention, and planning. It also helps to regulate emotions and make decisions. The left frontal lobe is particularly important for language skills, logical thinking, and planning. If the left frontal lobe is damaged, it can result in loss of language, difficulty solving problems, and changes in behavior.

Does the Left Frontal Lobe Control Memory?

While the frontal lobe is not primarily responsible for memory retention, it does play a role in the retrieval of memories. Specifically, the prefrontal cortex, which is a part of the frontal lobe, is involved in short-term memory and decision making. If the left frontal lobe is damaged, it can result in a person having difficulty retrieving memories from long-term storage.

What are the Symptoms of Left Frontal Lobe Damage?

The symptoms of left frontal lobe damage can vary depending on the extent of the damage and the specific area affected. Some of the common symptoms include:

  • Difficulty speaking and understanding language
  • Changes in mood and behavior
  • Difficulty with planning and organization
  • Loss of inhibition
  • Memory problems
  • Disorientation

Living with someone who has suffered left frontal lobe damage can be challenging, as their behavior and communication may be impacted. However, with patience and understanding, it is possible to manage these changes and help the person to regain some of their cognitive and behavioral functions.

What Happens if You Damage Your Upper Left Frontal Lobe?

The upper left frontal lobe is responsible for language production and comprehension. Damage to this area can result in aphasia, which is a language disorder that affects a person’s ability to communicate effectively. They may struggle to find the right words, speak in incomplete sentences, or have difficulty understanding what others are saying.

Right Frontal Lobe Function

While the left frontal lobe is associated with logical thinking and language production, the right frontal lobe has other functions. It is primarily responsible for spatial awareness, emotional recognition, and creativity. Damage to the right frontal lobe can result in difficulty recognizing emotions, lack of motivation, and changes in choice-making ability.

What Causes Left Frontal Lobe Damage?

There are several potential causes of left frontal lobe damage. Some of the common causes include:

  • Traumatic brain injury due to falls, accidents, or sports-related injuries
  • Tumors in the brain
  • Infections or inflammation of the brain
  • Stroke or other cardiovascular events

Parietal Lobe Function and Overlap with Frontal Lobe Function

The parietal lobe, which is located just behind the frontal lobe, is also involved in many of the same cognitive processes as the frontal lobe. Both areas work together to help us process information, make decisions, and control our movements. Specifically, parietal lobe function includes sensory perception, spatial awareness, and object recognition.

Right Frontal Lobe Damage Symptoms

As we mentioned earlier, damage to the right frontal lobe can result in several symptoms. Here are a few common ones:

  • Difficulty recognizing emotions in others
  • Lack of motivation
  • Changes in grooming and hygiene habits
  • Impulsivity

Frontal Lobe Function Psychology

The study of the frontal lobe’s function in psychology is a well-established area of research. Scientists have used brain imaging techniques to examine the neural networks involved in decision-making, attention, and memory retrieval. One of the significant findings is that the frontal lobe is involved in executive functioning, which refers to our ability to plan, organize, and self-regulate our behavior.

Frontal Lobe Function Examples

To help you better understand the frontal lobe’s function, here are a few examples of how it works in our daily lives:

  • When you’re trying to find a solution to a problem, the frontal lobe helps you plan and organize your thoughts to arrive at a solution.
  • When you’re driving, the frontal lobe helps you pay attention to the road and make quick decisions to avoid obstacles.
  • When you’re having a conversation with someone, the frontal lobe helps you to comprehend their language, process information, and respond appropriately.


The left frontal lobe is a critical area of the brain responsible for language, logical thinking, and planning. If this area is damaged, it can result in significant changes in behavior, communication, and cognitive function. However, with patience, understanding, and specialized therapy, people with left frontal lobe damage can regain many of their skills and lead productive lives. As we have seen, the interaction between the frontal lobe and other brain regions such as the parietal lobe and the right frontal lobe is complex, and researchers continue to explore the neural pathways involved. By staying informed and understanding the brain’s functions, we can better appreciate the wonders of the human mind.