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MRI Scans

Beschreibung

A mindmap describing and assessing MRI scans. Part of the Biological Approach in Psychology from the Edexcel AS-Psychology syllabus.
Heloise Tudor
Mindmap von Heloise Tudor, aktualisiert more than 1 year ago
Heloise Tudor
Erstellt von Heloise Tudor vor mehr als 10 Jahre
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Zusammenfassung der Ressource

MRI Scans
  1. Strong magnetic field passes over body allowing brain to be seen inside skull.
    1. Patient placed in large scanner
      1. Noisy, but painless
        1. Detailed image of brain generated as the nuclei of atoms in molecules arranged in a specific way
          1. Electromagnetic waves pass through body causing nuclei to emit their own radiowave
            1. Before scan, dye (contrast medium) injected to show organs.
              1. Strengths
                1. High validity
                  1. Accurate for checking abnormalities
                    1. Ethical
                      1. Non-invasive (compared to surgery)
                        1. Replicable
                          1. Checked by numerous people
                          2. Weaknesses
                            1. Noisy, enclosed, could be harmful
                              1. Stressful for patient
                                1. Limited information generated. Clear images but no brain activity measured.
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