How a Stroke Damages the Four Lobes
Other People Are Reading
-
-
A stroke occurs when blood vessels carrying oxygen to the brain become blocked or burst open. Either of these events causes a lack of oxygen to the brain, which results in damage to one or more of the lobes of the brain--the frontal lobe, the parietal lobe, the occipital lobe or and the temporal lobe. The symptoms suffered by a patient are dependent on what part of the brain is affected by the stroke.
-
The two main types of stroke are ischemic and hemorrhagic. In an ischemic stroke, blood supply to the brain is affected by a blocked vessel. In a hemorrhagic stroke, a blood vessel bursts and causes blood to go into or around the brain. During a stroke not all areas of the brain are damaged. The part of the brain in which a blood vessel bursts, or which artery has a clot or blockage, combined with the amount of time the brain is without oxygen, determines which lobe is damaged, and what the resulting damage will be.
-
-
According to the Merk Manual Home Edition, damage to each lobe results in different symptoms. If the frontal lobe is damaged, the ability to solve problems, think critically and perform complex movements can be impaired. In addition, frontal lobe damage can cause speech problems, delayed response, apathy, and the inability to control undesirable behaviors.
Parietal lobe damage causes a lack of sensation, numbness, confusion about direction, the inability to perform simple tasks and problems with numerical computations.
Temporal lobe damage can result in memory loss, lack of language comprehension and personality changes.
Damage to the occipital lobe can cause full vision loss or partial vision loss. The occipital lobe is the main center for vision processing. Depending on where the lobe is damaged, full vision loss can occur.
-
