Kellie Brouillette EDCI 2700 EPILEPSY Epilepsy is a neurological condition, which affects the nervous system. Epilepsy is also known as a seizure disorder. It is usually diagnosed after a person has had at least two seizures that were not caused by some known medical condition like alcohol withdrawal or extremely low blood sugar. Sometimes, according to the International League Against Epilepsy, epilepsy can be diagnosed after one seizure, if a person has a condition that places them at high risk for having another. A seizure is a sudden surge of electrical activity in the brain that usually affects how a person feels or acts for a short time.
Epilepsy Problems/Symptoms! Epilepsy is a neurological disorder characterized by unprovoked, recurring seizures that disrupt the nervous system and can cause mental and physical dysfunction. All types of Epilepsy share things like uncontrolled electrical discharge from nerve cells in the cerebral cortex. This part of the brain controls higher mental functions, general movement, and the functions of the internal organs in the abdominal cavity, perception, and behavioral reactions. They put Epilepsy into two different categories, which are usually based on a specific mechanism involved in the seizure and where the seizure is located in the brain.
Epilepsy Epilepsy is a neurological condition that produces seizures affecting a variety of mental and physical functions. Seizures are the most prominent characteristic of epilepsy. Seizures are caused by sudden burst of electrical activity in the brain. Although there are forty different types of this disorder each one represents itself with a unique treatment, prognosis and combination of seizure type. There is a variety of seizures a person with epilepsy may experience depending on which part of the brain is affected by the electrical burst of activity in the brain.
When alcohol acts on the CNS, intoxication occurs, affecting emotional and sensory function, judgment, memory and learning ability. Smell and taste are dulled. The ability to withstand pain increases as the BAL rises. Different parts of the brain seem to be affected by alcohol at different rates, creating alternate periods of restlessness and stupor. Long-term effects of alcohol on the central nervous system include tolerance, dependency, and irreversible damage.
Hydrocephalus is a condition in which there is an abnormal accumulation of Cerebrospinal fluid (CSF) in the ventricles and cavities of the brain. This usually results in increased intracranial pressure. Increased intracranial pressure might result in the progressive enlargement of the head (a characteristic feature of this disease), seizures, mental disability, tunnel vision and even death. Ventricular system CSF is produced by the choroid plexus, which is located within the ventricular system at a rate of about 0.25 mL/min. CSF capacity of the lateral and third ventricles in a healthy person is 20 mL.
The use of methamphetamine is associated with long-term biochemical and structural effects on the brain and significantly changes how the brain functions. The excessive production of dopamine causes neuropathological changes in the brain and has a neurotoxic effect on the brain cells that store dopamine and serotonin. These changes include decreases in the levels of dopamine transporters as well as decreases in the density of serotonin transporters in various parts of the brain. Studies have demonstrated that daily use of methamphetamine results in increased cell death in the brain, which would have a negative effect on prefrontal cortex functioning. Changes in the activity of the dopamine system are associated with reduced motor skills and impaired verbal learning.
Outline and evaluate one or more biological explanations for schizophrenia The biochemical explanation is one explanation for the cause of schizophrenia in terms of the release of neurotransmitters. This suggests that schizophrenia could be caused by an excess amount of dopamine in the brain. This is due to receptor cells requiring dopamine to fire so with a large amount of dopamine present it is activated too much and too many messages are sent. This is what could account for the confused and the erratic behaviour which is seen in schizophrenic patients. Support for this theory is the effect of amphetamines.
They are created by an abnormal and uncontrolled cell division, usually in the brain itself, but also in lymphatic tissue, in blood vessels, in the cranial nerves, in the brain envelopes (meninges), skull, pituitary gland, or pineal gland. Within the brain itself, the involved cells may be neurons or glial cells (which include astrocytes, oligodendrocytes, ependymal cells, and myelin-producingSchwann cells). Brain tumors may also spread from cancers primarily located in other organs (metastatic tumors). Any brain tumor is inherently serious and life-threatening because of its invasive and infiltrative character in the limited space of the intracranial cavity. However, brain tumors (even malignant ones) are not invariably fatal, especially lipomas which are inherently benign.
Schizophrenia (SZ) is a complex disorder, for which biological explanations have been put forward, with varying degrees of success. One biological explanation which has been proposed for SZ is the Dopamine Hypothesis. This theory suggests that SZ results from over-activity in the brain dopamine (DA) systems. The excess in the brain’s DA systems is both an excess of DA being released from neurons into the synapse, and an excess of DA receptors, meaning that the excess DA released is absorbed into the nervous system. Schizophrenic patients also tend to have increased DA sensitivity, meaning that even if their brain’s DA systems were working at a ‘normal’ level their symptoms might still be present.