Summary
The silicon content of various parts of the human brains (white matter, subcortical ganglia, stem, choroid plexus, meninges) was determined by means of emission spectrum analysis. The highest values (0.020–0.1946% of ash) were found in the meninges and choroid plexuses. The silicon content of white matter varied from 0.0022 to 0.0058% of ash, higher values being found for material from the parietal and occipital lobes than from the frontal and temporal lobes. In subcortical formations, relatively low values were found for the ganglia (0.0024–0.0044% of ash), while the neostriate system and the medulla oblongata had a somewhat higher silicon content.
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Literature Cited
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Del'va, V.A. Silicon content of various formations of the human brain. Bull Exp Biol Med 54, 1355–1357 (1964). https://doi.org/10.1007/BF00832801
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DOI: https://doi.org/10.1007/BF00832801