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fair_game_sheet[1] - Neuroscience Cerebrovascular...

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Neuroscience Cerebrovascular accident (CVA) A stroke is the rapidly developing loss of brain functions due to a disturbance in the blood vessels supplying blood to the brain. As a result, the affected area of the brain is unable to function, leading to inability to move one or more limbs on one side of the body, inability to understand or formulate speech or inability to see one side of the visual field. [1] In the past, stroke was referred to as cerebrovascular accident or CVA , but the term "stroke" is now preferred. Electroencephalography (EEG) -Device that measures and amplifies slight electrical changes on the scalp that reflect brain activity. -EEg uses electrodes on the scalp to record rapid chnages in brain electrical activity. -It can measures the brains reaction to lights, sounds, and other events. It provides little precision about the location of the brain. This is also used by sleep researchers to distinguish between sleep stages by recording brain waves with electrode attached to the scalp. Hindbrain w/functions -Pons and Medulla their functions are protective reflexes, infant reflexes, orienting reflex, cardiovascular, digestive, and respiratory reflex. -Medulla there is the inner cerebellum which deals with balance alcohol destroys this. There is the outer which is rapid automatic movements, timing of movement and thoughts. Midbrain w/functions Midbrain reticular formation is responsible for general arousal, sleep wake cycles, pain and perception. - Superior colliculi is responsible for visual targeting, pursuit eye movements. -Inferior colliculi is responsible for auditory targeting. Forebrain w/functions The forebrain consists of two hemispheres left and right. Each hemisphere is responsible for sensation and motor control on the opposite side of the body. The outer covering know as the cerebral cortex is especially prominent in humans. There are four lobes the occipital lobe, temporal lobe, parietal lobe, and frontal lobe. -Occipital lobe is at the rear of the head and is specialized for vision. People with damage to this are have cortical blindness. They have no conscious vision, no object recognition, and no visual imagery. -Temporal lobe of each hemisphere, located toward the left and right sides of the head, is the main area for hearing and some of the complex aspects of vision. People with damage to this area can no longer recognize faces. People with
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damage to another part become motion blind. Although thy can see the size and shape of an object they cannot track its speed or direction of movement. People with damage to the auditory parts of the temporal lobe are impaired at recognizing sequences of sounds. The part of the temporal lobe of the left hemisphere is important for language comprehension. People with damage to this are have trouble understanding speech and remembering the names and objects.
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