Download e-book for iPad: Brain Disorders by Bryan C. Hains

By Bryan C. Hains

ISBN-10: 0791085139

ISBN-13: 9780791085134

ISBN-10: 1438119534

ISBN-13: 9781438119533

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Extra info for Brain Disorders

Example text

PATHOLOGICAL CHANGES The most essential changes associated with ALS involve the degeneration and loss of motor neurons of the brain and spinal cord. In thinly sliced sections of the brain and spinal cord observed under a microscope, it is easy to see a reduced density of motor neurons. Some degree of scarring is also seen where neurons have been lost. In addition, the spinal cord itself becomes atrophied and shrunken, particularly in regions where motornerve roots emerge from the spinal cord. TREATMENT AND OUTLOOK No treatments are currently available to prevent or completely stop the progression of ALS.

Subsequent analysis of ALS spinal cords has shown that they have improperly functioning glutamate transporters, the molecules used by neurons to reuptake glutamate after release. PATHOLOGICAL CHANGES The most essential changes associated with ALS involve the degeneration and loss of motor neurons of the brain and spinal cord. In thinly sliced sections of the brain and spinal cord observed under a microscope, it is easy to see a reduced density of motor neurons. Some degree of scarring is also seen where neurons have been lost.

For some reason, certain regions are more susceptible to seizure activity, perhaps because these areas have a higher sensitivity to input, greater Reflex Epilepsy Reflex epilepsy is a rare form of epileptic seizure triggered by external stimulation or sometimes even by specific types of thoughts or mental activity. The most common form is photosensitive epilepsy, where a seizure is induced by visual stimuli, such as bright flashes of light like those produced by a strobe light, leaves moving in sunlight, or video games like this one.

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Brain Disorders by Bryan C. Hains


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