Figure 13 – Autoradiograph,
blood flow in the brain
Figure 14 – Hemorrhagic
damage from thiamine
(vitamin B1) deficiency
Figure 14: Damage to the inferior
colliculi in a human patient maintained
on prolonged parenteral feeding
lacking vitamin B1. Hemorrhage
occurs with vasodilation, a protective
mechanism. Compare with ischemic
damage in figure 3.
(from Vortmeyer et al. 1992).
Figure 13: Experiments on cerebral
circulation in cats showed greatest perfusion
of a radioactive tracer after 60 seconds, thus
greatest blood flow, in nuclei of the brainstem
auditory pathway. These auditory nuclei are
therefore vulnerable during a brief period of
circulatory arrest or asphyxia, and also to
metabolic disturbances caused by all other
etiologic conditions associated with autism.
(from Kety, 1962, with permission from
Columbia University Press)
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