Andrew Huberman· PhD
The first group was studying mood neuroanatomy on functional imaging. That was kind of the first generation of functional imaging back then, so PET scans, which are kind of metabolic scans, and then SPECT scans. And the idea there was looking at activity and metabolism and prefrontal cortex. And what they found in these kind of more crude scans is that just general hypoactivity, hypometabolism.