Frontal Lobe Syndrome :: Brain Medical Neurology Essays

Frontal Lobe Syndrome Although volumetrically the frontal lobes are the largest portion of the brain their function remains somewhat elusive (Jacobs, 2005). Even neuropsychologists have a difficult time creating test that accurately test frontal lobe functioning. We do know however, that the frontal lobes are involved in the storage of memories, concentration, abstract thought, judgment, and self control. The frontal lobe lies directly behind our forehead (NINDS, 2005) It contains the primary motor cortex and the prefrontal cortex, which extend from the central sulcus to the anterior of the brain. The posterior part of the frontal lobe is the precentral gyrus which is specialized in the control of fine movements. The very most anterior portion of the frontal lobe is the prefrontal cortex. The neurons in this area have up to sixteen times as many dendritic spines as neurons in the occipital lobe or primary visual cortex. As a result, the prefrontal cortex is able to integrate a great deal of information (Kalat, 2004). For most people the left frontal lobe controls language and the right non-verbal abilities (UNL, 2005).On the left frontal lobe is an area called Broca’s area which allows thoughts to be transformed into words. In addition, there are many connections from the frontal lobe to other parts of the brain that control vision, respiration, blood pressure and gastrointestinal activity (NBTF, 2005). Damage to the frontal lobe results a range of behaviors referred to collectively as ‘frontal lobe syndrome.’ There are numerous ways of damaging the frontal cortex including lesions, tumors, and strokes. Lesions damage the frontal cortex when a blow to the head or a sudden change of motion causes the boney structure underneath the frontal lobes to tear the axons (as is the case with prefrontal lobotomy or leucotomy). A stroke can result in ventral and medial frontal lobe damage. Tumors can damage the frontal lobe by being located on one of the lobes, or by causing pressure on the frontal lobe, as is the case with meningioma, subdural hematoma or similarly meningitis (UNL, 2005). Frontal lobe syndrome results in the impairment of language, motor functions, social behavior, abstract reasoning, and cognition. Furthermore, there is often a change in personality (UNL, 2005). Although language remains fluent and in proper syntax, the overall amount of talking decreases. Patients have difficulty maintaining conversations and some even become mute. Motor functions are often uncoordinated and patients often have difficulty constructing three