research. So there they did these really advanced kind of volumetric studies of his hippocampus and found that it had shrunk by about 10%. It doesn't sound like a lot, but that's as much as a 60-year-old would lose in a decade. And it also sort of shrunk in a, not in a uniform way, which would lead you more to think that it's not something like hypoxia, which many doctors sort of initially, when I described the syndrome, would say, oh, well, they're deprived of oxygen and that's what it is. But that tends to be a more diffuse injury. It wouldn't have that specificity to it. It almost certainly does contribute to the injury. So they learned that about the imaging, and then they also did really advanced neuropsychological testing and found that his episodic memory, so his memory for new events and new information, was on par with someone with advanced Alzheimer's. But the rest of his cognitive function was pretty much intact. I mean, he is very intelligent, as I said, and one day that I (22/37)
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