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FRONTAL LOBE FACTS
Transcript of FRONTAL LOBE FACTS
Facts on the Frontal Lobe
The frontal lobe contains most of the chemical compound of dopamine sensitive neurons in the cerebral cortex. Due to this, it’s in charge of how it makes you feel when you’ve been rewarded, determines your attention span, and is responsible for short term memory. This process of releasing dopamine tends to limit and select sensory information arriving from the thalamus to the forebrain. Dopamine also assists with movement in different areas throughout the body.
Damage to the Frontal Lobe
Damage to the frontal lobe can cause many different issues, however, all pertaining to memory loss and sometimes loss of control in muscle movement. Transient ischemic attacks, mini seizures can be the result due to the blockage of blood flow to the brain or as a result as a rupturing of an aneurysm in a cerebral artery. These usually affect adults over the age of 65. Other issues that can arise due to complications in the frontal lobe include Alzheimer’s disease which can cause dementia, and will initially deteriorate their ability to self-care. Also Parkinson’s disease which can cause frontal lobe epilepsy seizes and uncontrollable muscle movements.
The frontal lobe is located in front of each cerebral hemispheres, being positioned in front of the parietal lobe and above and in front of the temporal lobe. It’s one of the four major lobes in the brain. The frontal lobe can be separated into four parts: polar, lateral, orbital, and medial. On the lateral surface of the human brain, the central sulcus separates the frontal lobe from the parietal lobe. The lateral sulcus separates the frontal lobe from the temporal lobe.
There’s four different theories of the frontal lobe. The Single-Process theory: damage to a single process or system would then be responsible for many different dysexecutive symptoms. Multi-Process theory: the frontal lobe executive system contains functions such as working memory or inhibition. Construct-Led theory: if not all, but most of the frontal functions can be explained by one construct function such as working memory or inhibition. Single-System: Specific dysexecutive symptoms related to the processes and construct of the underlying structures.
The frontal cortex is responsible for cognitive thought and planning. It also helps control behaviors, helps you pay attention, helps you plan on action, and assists with making decisions. It also helps with the brains reasoning skills. The primary cortex is responsible for controlling movements in each part of the body. A section of the frontal cortex called the Broca’s Area, if damaged can cause problems forming worlds. It also affects the ability to control muscle movements that enable production of speech.
The frontal lobe controls the body’s movements through the cerebellum, the center for the body’s equilibrium and movement. The frontal lobe is also responsible for controlling voluntary muscles of the body that are most responsible for running, walking, picking things up, and throwing objects. Your body’s sense of direction and spatial coordination are also influenced by the frontal lobe. Because of your frontal lobe’s sense of making decisions, it’s extremely quick to decide and conduct what your body does and how it moves properly.
The frontal lobe is also responsible for influencing your social interaction with people. It’s what has responsible control over how you would act and react in public. It also allows you to relate to others experiences and is responsible for the feelings of empathy and joy towards others. In most situations you will most likely always respond correctly to the stimuli being presented due to your internal knowing between right and wrong. Some damage to the frontal lobe could also include influence of issues of sexual desires and activities.
Emotions and Behavior
The frontal lobe also promotes high cognitive function and is in control over your emotions and behaviors, all of which is completely under the control of the frontal lobe. Damage to different parts of the lobe will result in different complications to emotional and behavioral responses. Damage to the left side of the frontal lobe, more often than less, will lead to lack of expression and blunt responses without much thought. Damage to the right side of the brain will result in uncontrolled, uninhibited, and even inflated behavior responses, often very sporadic and intense.
Symptoms of complications throughout the frontal lobe include:
Short attention span, trouble reasoning, having a hard time planning, poor memory, short term memory loss, environmental dependence, addiction, alterations in personality, increased irritability, aggression, changes in sexual behavior, inappropriate responses to certain stimuli, lack of concern, blunted expression of emotion, depression, decreased tolerance to frustration, easily angered, can include problems in movements of the body, having a hard time balancing, feeling of dizziness and lack of spatial direction.
Motor cortex is the region of the cerebral cortex involved in the planning, control, and execution of voluntary movements. Classically the motor cortex is an area of the frontal lobe located in the dorsal precentral gyrus immediately anterior to the central sulcus. The motor cortex can be divided into three areas. The primary motor cortex is the main contributor in generating neural impulses that pass down the spinal cord and control the execution of movement. The premotor cortex is responsible for some aspects of motor control, including the preparation for the movement. The supplementary motor area proposes many functions including internally generated plan of the sequence of the movement.