Quotes About PET scans

We have a habit of turning to scientists when we want factual answers and artists when we want entertainment, but where are the facts about the nature of the self? Neurologists peering at PET scans and fMRIs know they aren't seeing the soul in there.

Excess cholesterol in the blood can lead to excess cholesterol in the brain, which may then help trigger the clumping of amyloid seen in Alzheimer's brains. Under an electron microscope, we can see the clustering of amyloid fibers on and around tiny crystals of cholesterol.85 And indeed, advanced brain imaging techniques, such as PET scans, have shown a direct correlation between the amount of LDL ("bad") cholesterol in the blood and amyloid buildup in the brain.