scanning techniques to identify brain functioning

• What is the term for a low mood that can affect daily life?

  Depression
• What are scanning techniques used for in medical imaging?

  • CT scans provide detailed images
  • PET scans show brain activity
  • MRI measures blood oxygen levels
• What do CT scans combine to give detailed pictures?

  X-rays of the brain
• How do PET scans visualize brain activity?

  By injecting radioactive glucose
• What do fMRI scans measure?

  Changes in blood oxygen levels
• What type of image does fMRI display?

  3-D computer image
• What is a potential effect of neurological damage on behavior?

  It can produce speech problems
• What is Broca's aphasia associated with?

  Problems producing speech
• What does Wernicke's aphasia affect?

  Understanding speech
• What are the strengths and weaknesses of traditional X-ray imaging?

  Strengths:

  • Quick and widely available
  • Good for viewing bone structures

  
  

  Weaknesses:

  • Lower quality than advanced imaging
  • Limited detail for soft tissues
• How does high radiation affect imaging quality?

  It produces still images
• What do strengths in imaging show about brain function?

  They indicate brain action and function localization
• What is a disadvantage of high-cost imaging techniques?

  They may be unethical due to expense
• What is a benefit of superior imaging techniques?

  They produce clearer images
• What is a drawback of expensive imaging methods?

  They require patients to remain still