Techniques to study the brain

Question 1

fMRI

Answer 1

• Functional magentic resonance
• measure brain activity by detecting blood flow changes
• magnetic fields and radiowaves to detect blood oxygen dependent levels from different areas of the brain
• the signal indicates the blood flow levels and thus the activity
• fMRI scans to pinpoint areas of high activity

Question 2

MRI

Answer 2

• radio waves and magnets
• protons in body align with magnets
• when hit with radiowaves they hit out of alignment so when the waves are switched off they go back in alignment
• emitt radiowaves an you get a picture