Brain & Nervous System: Tests & Diagnosis

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  • Angiogram of the Head and Neck

    01/19/07, Healthwise

    Angiogram of the head and neck is an X-ray test that uses a special dye and camera (fluoroscopy) to take pictures of the blood flow in the blood vessels of the head and neck. An angiogram of the neck (carotid angiogram) can be used to

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  • Computed Tomography (CT) Scan of the Head and Face

    07/19/07, Healthwise

    A computed tomography (CT) scan uses X-rays to make pictures of the head and face.

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  • Magnetic Resonance Imaging (MRI)

    06/22/07, Healthwise

    Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to make pictures of organs and structures inside the body. In many cases, MRI gives different information about structures in the bod

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  • Magnetic Resonance Imaging (MRI) of the Head

    01/19/07, Healthwise

    Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to take pictures of the head. In many cases MRI gives information that cannot be seen on an X-ray, ultrasound, or computed

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  • The Lie of Lie Detectors

    02/17/06, Harvard Health Publications

    It is a myth that current lie detectors (polygraph tests) detect lies; in fact, the term “lie detector” promises more than can be delivered. What they detect is the body’s response to lying, such as sweating of the palms or an increase in heart rate.

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  • Do humans really only use 10 to 20 percent of their brains?

    10/02/06, Why Do Men Fall Asleep After Sex?

    There are many different nonscientific answers to this question. A wife might argue that her husband uses less than 10 percent of his brain at times, a coach often tells his players that they aren't using their heads enough, and we often think that our politicians don't use their brains at all. The truth is that there is no way to quantify how much of our brains we use at any given time. Humans definitely use more than 10 to 20 percent of their brains, so this myth is definitely false.

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  • Why don't men listen?

    10/02/06, Why Do Men Fall Asleep After Sex?

    In the September 2005 issue of the journal Neuroimage, psychiatric researchers at the University of Sheffield reported that male and female voices activate distinct regions of the male brain. The scientists monitored the brain activity of twelve men as they listened to male and female voices. They found that in men, women's voices stimulate an area of the brain used for processing complex sounds, like music. Male voices, on the other hand, activate a region of the brain used for producing imagery. This may suggest that, at least for men, the female voice is more complex and more difficult to hear and understand.

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  • Invisible Light, Night Goggles and Brain Tumors

    04/01/04, M. D. Anderson

    Invisible Light, Night Goggles and Brain Tumors

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  • Encephalitis - Exams and Tests

    08/17/06, Healthwise

    Your doctor will ask questions about your medical history and your symptoms. It is important to tell your doctor if you have taken any recent trips or have been sick lately. Your doctor may also ask about your sexual history to see if

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  • Neurological examination for multiple sclerosis

    03/23/06, Healthwise

    Before conducting a neurological examination for multiple sclerosis (MS), the doctor will collect information about your symptoms. The kinds of symptoms, as well as how and when they occur, are important in evaluating whether you might

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