What Are The 4 Lobes Of The Brain
1. What Is the Frontal Lobe and Its Function?
1.1. What Is the Structure of the Frontal Lobe?
The frontal lobe is situated at the front of the brain and is the largest lobe .
It is delimited from the parietal lobe by the central sulcus and from the temporal lobe by the lateral sulcus .
The frontal lobe is divided into lateral, medial , and orbital surfaces or parts.
Each part or surface is further divided into other parts known as gyri that are also separated by sulci .
Each gyrus has a specific function associated with the function of the frontal lobe.
1.2. What Is the Function of the Frontal Lobe?
The frontal lobe has many functions:
- Executive Function , planning, selection, sequential organization, and self-monitoring of action.
- Memory (working memory, learning, and long-term memory
- Voluntary Motor Movements
- Affect and Mood .
- Emotional and Social Response
1.3. What Happens If the Frontal Lobe Is Damaged?
Damages of the frontal lobe have been associated with the following disorders and conditions:
- Attention deficits
2. What Is the Parietal Lobe and Its Function?
2.1. What Is the Structure of the Parietal Lobe?
The parietal lobe is situated between the frontal lobe and the occipital lobe .
2.2. What Is the Function of the Parietal Lobe?
Cerebral Cortex Lobes Function
Most of the actual information processing in the brain takes place in the cerebral cortex. The cerebral cortex is located in the division of the brain known as the forebrain. It is divided into four lobes that each have a specific function. For example, there are specific areas involved in movement and sensory processes , and olfaction). Other areas are critical for thinking and reasoning. Although many functions, such as touch perception, are found in both the right and left cerebral hemispheres, some functions are found in only one cerebral hemisphere. For example, in most people, language processing abilities are found in the left hemisphere.
How The Lobes Of The Brain Interact
The lobes of the brain are not separated from one another by bones or other barriers, and must constantly interact with one another to process and synthesize information. All of the lobes are either physically connected to one another, or connect via nerve signals, and researchers sometimes debate the precise point at which one lobe begins and another ends.
The brain is divided into left and right hemispheres, and each lobe crosses both hemispheres. Thus doctors and researchers sometimes refer to two distinct lobesthe left frontal lobe and right frontal lobe, for example.
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What Are Brain Lobes And How Are They Important
The human brain is divided by lobes into four separate regions known as the frontal, parietal, occipital, and temporal lobes.
The human brain is what makes us who we are they are the center of our memories, experiences, and everything that makes us who we are. The brain has such a large effect on every second and instant in our lives. While the brains functions and structure may change over time, the fact that all vertebrates have a cerebrum will always remain the same. This is a new evolutionary development that has been identified, and there are scientific theories that surround it.
Many scientists that have studied this part of the brain believe that any conscious experience we go through as mammals happens in the cerebrum. This means that even animals with cerebrums can go through conscious experiences including having a sense of self. The size of the lobes and the developmental stage of the bran also affects the consciousness of an animal.
The lobes of the brain are split into four regions as discussed above. It is common now for the limbic lobe to even be identified as a possible fifth lobe.
The Interaction Between Brain Lobes
Aside from the separate lobes, the brain is also divvied into left and right hemisphere. Each lobe located in the brain crosses through both right and left hemisphere.
The Functions of Each Lobe
Some primary functions of the frontal lobe include:
Some primary functions of the parietal lobe include:
Becoming Mindful Of The Brain And Its Functions
The human brain is the epicenter of the central nervous system, which controls the bodys most vital tasks. Everything from movement of limbs and facial features to regulating bodily functions like breathing is sent as a message from some part of the brain.
Comprised of billions of nerve cells that communicate with the body through the spinal cord, the brain is a complicated organ separated into several sections and subsections. Below is a breakdown of the parts of the brain, and how they contribute to the bodys functions and abilities.
Also called the cortex, the cerebrum makes up the largest part of the brain. It is associated with higher functions, such as cognitive thoughts and actions. There are four sections of the cerebrum , each of which contributes to the body differently. The four lobes and their functions are as follows:
The cerebellum resembles a smaller version of the cortex, because of its densely wrinkled appearance and its halved parts. It is responsible for several physical tasks, like movement, balance, posture and coordination. Although smaller in size, the cerebellum contains more neurons than the entire brain. It is critical for accomplishing day-to-day tasks as simple as walking or sitting down.
The Limbic System
The Brain Stem
There are three parts of the brain stem: the midbrain, the pons and the medulla. Below is an explanation of what each part does in relation to the brain system:
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What Are The Eight Lobes Of The Brain
- Frontal lobe. Boundaries and landmarks. Precentral gyrus.
- Insular lobe. Boundaries and landmarks.
- Parietal lobe. Boundaries and landmarks. Inferior parietal lobule.
- Temporal lobe. Boundaries and landmarks.
- Occipital lobe. Boundaries and landmarks.
- Limbic lobe. Subcallosal gyrus.
- Clinical notes. Anterior cerebral artery syndrome.
Get To Know The Lobes Of The Brain An Easy Guide
Containing an average of 86 billion neurons, the brain is one of the most complex and inexplicable organs in the human body. In this article, youll be learning about the major lobes of the brain and their respective functions.
Fun fact: Its not true that we use 10% of our brain. No study has ever claimed that. We actually lack the full knowledge of the brains capabilities and it keeps us from understanding its true potential.
Weve yet to uncover a deeper understanding of the brain, and in the future, we might be able to access some hidden brain functions.
So, lets uncover a bit of what we know today and learn about the lobes of the brain and their functions.
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Four Cerebral Cortex Lobes
- Parietal Lobes: These lobes are positioned posteriorly to the frontal lobes and above the occipital lobes. They are involved in receiving and processing of sensory information. The somatosensory cortex is found within the parietal lobes and is essential for processing touch sensations.
- Frontal Lobes: These lobes are positioned at the front-most region of the cerebral cortex. They are involved with movement, decision-making, problem-solving, and planning. The right frontal lobe controls activity on the left side of the body and the left frontal lobe controls activity on the right side.
- Occipital Lobes: Located just below the parietal lobes, the occipital lobes are the main center for visual processing. The visual information is sent to the parietal lobes and temporal lobes for further processing.
- Temporal Lobes: These lobes are located directly below the frontal and parietal lobes. They are involved with memory, emotion, hearing, and language. Structures of the limbic system, including the olfactory cortex, amygdala, and the hippocampus are located within the temporal lobes.
In summary, the cerebral cortex is divided into four lobes that are responsible for processing and interpreting input from various sources and maintaining cognitive function. Sensory functions interpreted by the cerebral cortex include hearing, touch, and vision. Cognitive functions include thinking, perceiving, and understanding language.
The 4 Major Lobes Of The Brain And Their Functions
The cerebral cortex is the outermost layer of the brain. It is divided lengthways into two cerebral hemispheres and is connected by a band of nerve fibers that allow both sides to communicate with one another.
Each of the hemispheres is divided into four parts: frontal lobe, parietal lobe, temporal lobe, and occipital lobe.
Although most of our brain functions rely on multiple regions communicating in conjunction with one another, each lobe of the brain is thought to carry out the bulk of a certain set of functions.
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What Are The Functions Of Four Lobes Of The Brain
The functions of four lobes of the human brain are:
Frontal lobe It is involved in voluntary movements, intelligence, parts of speech, planning, problem-solving and emotions.
Parietal lobe It is involved in perception of stimuli, visual and auditory activities.
Occipital lobe It is primarily responsible for vision or visual processing.
Temporal lobe plays a vital role in processing emotions, certain aspects of visual perception, speech, memory, language, stimuli and auditory recognition.
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Ventricles And Cerebrospinal Fluid
The brain has hollow fluid-filled cavities called ventricles . Inside the ventricles is a ribbon-like structure called the choroid plexus that makes clear colorless cerebrospinal fluid . CSF flows within and around the brain and spinal cord to help cushion it from injury. This circulating fluid is constantly being absorbed and replenished.
There are two ventricles deep within the cerebral hemispheres called the lateral ventricles. They both connect with the third ventricle through a separate opening called the foramen of Monro. The third ventricle connects with the fourth ventricle through a long narrow tube called the aqueduct of Sylvius. From the fourth ventricle, CSF flows into the subarachnoid space where it bathes and cushions the brain. CSF is recycled by special structures in the superior sagittal sinus called arachnoid villi.
A balance is maintained between the amount of CSF that is absorbed and the amount that is produced. A disruption or blockage in the system can cause a build up of CSF, which can cause enlargement of the ventricles or cause a collection of fluid in the spinal cord .
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The Case Of Phineas Gages Brain Injury
In 1848, a man named Phineas Gage was working on the railroad, tamping gunpowder into a blasting hole with an iron rod and accidentally ignited the gunpowder.
The explosion caused the rod to shoot through his left side of his face and through his head, destroying much of his brains left frontal lobe.
Amazingly after the accident, he stood up, walked over, and described what had happened all while being conscious.
The doctor that examined him at the time refused to believe that a rod had shot through his head until Gage coughed out what was described to be a teacupful amount of brain.
Surprisingly after a few months, he was healed up and moving around just fine. However, his friends reported that he was no longer like himself.
The old Gage was mild-mannered and pleasant. After the accident though, he became mean-spirited and vulgar, or as his friends and coworkers described him no longer Gage.
Your brain essentially encompasses everything about what makes you a person, from personality to your thinking. Phineas Gages story is an example of how much we are yet to understand our brains functions and capabilities.
What Are The Lobes Of The Brain
What we know as lobes of the brain consists of a classification by plots of the cerebral cortex that allows mapping the main areas of nerve activity. These are not radically separate areas from each other, but they are relatively easy to distinguish one from the other if we look at the folds and different fissures of the brain.
These plots are the lobes of the brain, and below you can read their most basic aspects, taking into account that each cerebral hemisphere has the same number, types and distribution of lobes.
When we think about the lobes of the brain, we can make the mistake of imagining a series of separate or differentiated structures. Well, it is important to note that there are no intermediate barriers and that the four large areas that make up the brain lobes always work in harmony, constantly connected and sharing information.
On the other hand, the fact that each brain lobe has a series of its own characteristics does not mean that each structure almost exclusively controls a certain task. Many activities and processes overlap across different brain regions.
Thus, the functioning of one region could not take place effectively without the presence of another. Hence, sometimes, the brain damage caused in a specific area, can be compensated with what other regions can carry out with greater or lesser effectiveness.
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Superior Parietal Lobule Damage And Gerstmann Syndrome
Damage within the superiorlobule of the parietal lobe can result in disturbances including apraxia and sensory neglect.
Damage to the angulargyrus region of the parietal lobe of the dominant cerebral hemisphere, either as a result of ischemia or trauma, can result in Gerstmann syndrome. This syndrome is characterized by:
- agraphia/dysgraphia, the inability to write
- acalculia, the inability to perform arithmetic functions
- finger agnosia, the inability to recognize ones own fingers
- the inability to distinguish between the right and left sides of the body
Where You Reside A Break Down Of The Lobes Of The Brain
Ever wonder what makes you, wellyou! Your brain is where your mind and consciousness is thought to be located. Everything you are from your thoughts, memories, feelings, and behaviors are sitting in that magnificent brain of yours.
Before we jump on the topic of the lobes of the brain, well need to first get a grasp on just how much your mind has physical roots in your brain.
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Bumps And Grooves Of The Brain
In humans, the lobes of the brain are divided by a number of bumps and grooves. These are known as gyri and sulci . The folding of the brain, and the resulting gyri and sulci, increases its surface area and enables more cerebral cortex matter to fit inside the skull.
Brain Lobes And Their Functions
The brain is divided into four sections, known as lobes . The frontal lobe, occipital lobe, parietal lobe, and temporal lobe have different locations and functions that support the responses and actions of the human body. Let’s start by identifying where each lobe is positioned in the brain.
Position of the Lobes
The frontal lobe is the emotional control center of the brain responsible for forming our personality and influencing out decisions. The frontal lobe is located at the front of the central sulcus where it receives information signals from other lobes of the brain.
The parietal lobe processes sensory information for cognitive purposes and helps coordinate spatial relations so we can make sense of the world around us. The parietal lobe resides in the middle section of the brain behind the central sulcus, above the occipital lobe.
The temporal lobe is located on the bottom of the brain below the lateral fissure. This lobe is also the location of the primary auditory cortex, which is important for interpreting the sounds and the language we hear.
The occipital lobe is located at the back portion of the brain behind the parietal and temporal lobes. The occipital lobe is primarily responsible for processing auditory information.
Functions of the Lobes
The frontal lobe has many functions most of which center on regulating social behavior. Here are some of the important functions of the frontal lobe:
- Visual-spatial processing
- Movement and color recognition
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Blood Supply To The Brain
Two sets of blood vessels supply blood and oxygen to the brain: the vertebral arteries and the carotid arteries.
The external carotid arteries extend up the sides of your neck, and are where you can feel your pulse when you touch the area with your fingertips. The internal carotid arteries branch into the skull and circulate blood to the front part of the brain.
The vertebral arteries follow the spinal column into the skull, where they join together at the brainstem and form the basilar artery, which supplies blood to the rear portions of the brain.
The circle of Willis, a loop of blood vessels near the bottom of the brain that connects major arteries, circulates blood from the front of the brain to the back and helps the arterial systems communicate with one another.
Brain Structure And Function
The brain has two halves or hemispheres: right and left. The right hemisphere controls the left side of the body, and the left hemisphere controls the right side. In most people, the left hemisphere regulates language and speech, and the right hemisphere controls nonverbal, spatial skills. If the right side of the brain is damaged, movement of the left arm and leg, vision on the left, and/or hearing in the left ear may be affected. Injury to the left side of the brain affects speech and movement on the right side of the body. Each half of the brain is divided into main functional sections, called lobes. There are four lobes in each half of the brain: the Frontal Lobe, Temporal Lobe, Parietal Lobe, and Occipital Lobe. Other important sections of the brain are the Cerebellum and the Brain Stem. Although not usually divided into lobes, the cerebellum and brain stem both have different parts. Each of the brain hemispheres and lobes, cerebellum, and brain stem has specific functions, and they all work together:
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Frontal Lobe: most anterior, right under the forehead the frontal lobe controls intellectual activities, such as the ability to organize, as well as personality, behavior, and emotional control.
Parietal Lobe: near the back and top of the head above the ears the parietal lobe controls the ability to read, write, and understand spatial relationships.
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