Nor is another method, PET scans of the brain, as people run.
PET scans may be used to find nasopharyngeal cancers that have spread to the bone.
PET scans indicate that multiple tumors where no longer present after 3 months.
The PET scans also answer questions about which specific areas of the brain associate themselves with manipulating numbers.
Researchers recently have used PET scans to study brain activity in certain disorders, like dyslexia.
And PET scans can, at best, produce one image every 5 or 10 minutes.
Shulgin has on occasion run PET scans to see where in the brain some of his drugs go.
Another, using PET scans, found unusual activity in the part of the brain that controls short-term recall.
PET scans may help determine the degree of pancreatic cancer spread.
PET scans reveal which parts of the brain are active during cognitive tasks.