• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Notes on brain scanning - PET and FMRI (Fictional Magnetic Resonance Imaging)

Extracts from this document...

Introduction

´╗┐PET What is it and how does it work? A PET (Position emission topography) scan monitors glucose metabolism in the brain. The patient is injected with a harmless dose of radioactive glucose, and the radioactive particles emitted by the glucose are detected by the PET scanner. The scans produce colored maps of brain activity. Strengths and advantages The PET scan has been used to diagnose abnormalities like tumors, or changes as in Alzheimer?s; to compare brain differences in normal individuals and in those with psychological disorders (neural activity is different in people with schizophrenia); and to compare sex differences. The greatest advantage of PET (compared to MRI) is that it can record ongoing activity in the brain, such as thinking. It helped neuroscientists to develop methods to detect the signs of Alzheimer?s disease. ...read more.

Middle

Nevertheless, you should inform the nuclear medicine personnel of any allergies you may have or other problems that may have occurred during a previous nuclear medicine exam. Injection of the radiotracer may cause slight pain and redness, which should rapidly resolve. Women should always inform their physician or radiology technologist if there is any possibility that they are pregnant or if they are breastfeeding. Research studies that illustrate the use of this technology Gur et al. (1995) found more active metabolism in primitive brain centers controlling violence in men than in women. New York University School of Medicine -Using PET and brain-scan-based computer program researchers showed that in the early stages of Alzheimer?s disease, there is a reduction in brain metabolism in the hippocampus. FMRI (Fictional Magnetic Resonance Imaging) What is it and how does it work? ...read more.

Conclusion

Monks also showed less activity in non-concentration parts of the brain Differences due to neuroplasticity-meditating actually physically affected monk?s brain -Fisher (2005) Romantic love Addiction MRI (Magnetic Resonance Imaging) What is it and how does it work? -It provides 3D brain structures -It detects changes in use of oxygen in blood (The area brain activity is --more active has more oxygen) -Show how brain activity reacts to the environment Strengths and advantages -Does not involve effects to radio activity -Can record activity in all brain regions -It use for cell tissue structure -Easily create images from various views -Shows differences between different tissues (quite precise) Disadvantages, limitations or concerns -Expensive cost -Loud noises can intimidate the participants -Movements can affect the quality of picture -Not quite detail as fMRI picture Research studies that illustrate the use of this technology (Don?t use Maguire) -H.M case study by Corkin (2002) -Fisher fMRI (2005) Romantic love Addiction ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Psychology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Psychology essays

  1. Clive Wearing and HM - Two Evaluations of Brain Function and memory loss.

    participants in studies such as these that their accounts can become subjective HM Clive Wearing Milner saw HM every day for an extremely long period of time and thus her relationship with HM grew on her part, which could affect her opinions and the way in which she conducts her experiments.

  2. Revision notes on the Development of Moral Behaviour

    Method Piaget investigated the way that children saw the rules about right and wrong by asking them about the rules of marbles. He asked the children: - What the rules were - Where the rules came from - Whether or not they can be changed - Whether or not they

  1. Effects of Drugs and Alcohol on the Brain

    Animal studies have shown that high doses of stimulants can have permanent neurotoxic effects by damaging neuron cell endings (How Stimulants Affect the Brain and Behavior). Researchers believe that each time a neurotransmitter floods across a synapse, circuits that trigger thoughts and memories become hardwired in the brain.

  2. Psychology IB Abnormal Notes and Essay Plans

    Sociocultural viewpoints Sociocultural viewpoints. Is the difference in the incidence of certain mental illnesses between men and women or people from different cultures due to differences in the status and treatment of women or men or specific cultural groups in certain parts of the world?

  1. Psychology IB Abnormality Notes

    If it works for many, this suggests that by changing the way we think we can ?feel? better, so cognitive distortions can be a contributory cause. However this therapy does not work for everyone, which suggests the causes of a condition for some is more complex.

  2. Where does Schizophrenia Lie in the Spectrum of Nature vs Nurture?

    Only he could understand what was written. This shows that although he?s taking medication, he still has a schizophrenic mind. It was undeniable that the shots that he took kept him calm and away from relapses. Additionally, they kept him from letting his thoughts jumble.

  1. A Long Way Gone: Memoirs of a Boy Soldier by Ishmael Beah--A Psychological Analysis ...

    Gardiner & Kosmitzki (2005) claimed that each stage in Erikson?s theory is ?accompanied by a psychosocial crisis requiring resolution if one is to move successfully from one stage to the next? (p.35). Ishmael had not successfully negotiated his place in the world at this point; therefore the stage of intimacy vs.

  2. PET and MRI Scans of the brain

    Magnetic Resonance Imaging (MRI) 1. MRI scans use magnetic and radio waves, instead of X-rays, to provide very clear and detailed static three dimensional images of brain structure. 2. MRI scans are mainly used to rule out other possible causes for cognitive impairment, such as a brain tumour or blood clot.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work