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Research of the Brain and Brain Damage

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Claire James

on 7 November 2012

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Transcript of Research of the Brain and Brain Damage

Research of the Brain
and Brain Damage By Maddie Pinney, Abby McFeaters,
Aj Manello, and Claire James Research of the Brain and Brain Damage Deep lesioning is a process used to destroy brain tissue by using electric currents
Changes in behavior can show scientists what that part of the brain is used for If a weaker current is used this method is called electrical stimulation of the brain and can provide similar results On a micro scale this procedure is called a micro-electrode. This is done to see the activity of a single neuron. On a macro scale scientists can record what the brain is doing as a whole using electroencephalography by placing small plates on the skull to record activity using an electroencephalograph (EEG). Extra Vocab Hypoxia- when the brain is lacking oxygen Brain tumor- an abnormal growth of tissue in the brain can be malignant or benign Questions What are a few ways to test the brains functions based on location? Since the brain runs on glucose,
a PET scan shows which areas are
using energy. PET scans reveal specific areas
of the brain are active when doing different functions. Biopsychology: study of how biological processes, the brain, and the nervous system relate to behavior. Clinical studies: examines how brain diseases and injury affect behavior, personality, and sensory capabilities. By placing positrons on the head
and sending data to a computer, it is
possible to create moving, color images of
changes in brain activity. Ablation: experimental technique by surgical removal of parts of the brain, after which we can see changes in behavior and find purpose and insight in the missing part. Electrical stimulation: "turns on" brain structures by activating the brain's surface by touching it with an electrode (small electrified wire) stroke-or cerebrovascular accident (CVA), is the rapid loss of brain function(s) due to disturbance in the blood supply to the brain. aneurysm- localized, blood-filled balloon-like bulge in the wall of a blood vessel, most commonly occurring in arteries at the base of the brain Aphasia - loss of ability to understand or express speech Concussion- a minor traumatic brain injury (TBI) that may occur when the head hits an object, or a moving object strikes the head. Seizure disorder - a brain disorder in which a person has repeated seizures (convulsions) over time.
Seizures are episodes of disturbed brain activity that cause changes in attention or behavior. What does a PET scan do? MRI Scan (Magnetic resonance imaging): Uses a very strong magnetic field instead of x-rays to produce images of the body's interior. Computer processing creates a three-dimensional model of the brain or body. Any two dimensional plane or slice can then be selected and displayed on a computer screen, allowing us to peer into the brain almost as if it were transparent. fMRI: a more in depth MRI; makes
brain activity visible. Motor areas on the
surface of the brain would be highlighted. PET scan: (positron emission tomography) most remarkable of all types of scans. detects subatomic particles (positrons) emitted by weakly radio active glucose as it is consumed by the brain. shows which areas are using energy. can create moving color pictures of brain activity. CT Scan- Specialized X-Ray Apraxia- a disorder of the nervous system characterized by an inability to perform purposeful movements but not paralysis r loss of sensory function Agnosia- partial or total inability to recognize objects by the use of the senses Amnesia-loss of a large block of interrelated memories due to shock injury etc. True or False: There is no difference between an MRI and a fMri? If you were being strangled your brain would suffer from...? What kind of energy does the brain run on? The study of how biological processes relate to behavior is known as what? What is the alternative to ablation?
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