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Property Organism Value Units ID Details
Number of compacted lamellae in mature central nervous system (CNS) myelin sheath vertebrates ≤160 compacted lamellae 114492 Hildebrand C, Remahl S...
Fraction of cells in the CNS (central nervous system) that are microglia Unspecified 10 % 114500 Aguzzi A, Barres BA,...
Fraction of excitatory axo-dendritic synapses in the CNS that occur on dendritic spines Unspecified >90 % 112037 Ziv NE, Smith SJ. Evidence...
Fraction of white matter of central nervous system (CNS) that is myelin on a dry weight basis Mammals 50 - 60 % 114484 Hildebrand C, Remahl S...
Fraction of body energy consumed by the central nervous system (cns) Human Homo sapiens ~20 % 111083 Rangaraju V, Calloway N...
Diameter of myelinated and unmyelinated axons in central nervous system (CNS) (but size spectra of myelinated and unmyelinated axons overlap considerably) Metazoa animals myelinated 0.2: unmyelinated ≤0.8 µm 114487 Hildebrand C, Remahl S...
Representative examples for glutamic acid and serine concentrations measured in identified isolated neurons from the A. californica CNS California sea hare Aplysia californica Table - link N/A 106604 Nemes P, Knolhoff AM...
By the end of the first postnatal month corticospinal conduction velocities reach Cat 12 - 20 m/sec 114495 Hildebrand C, Remahl S...
Fraction of brain that is constituted by white matter Human Homo sapiens >40 % 114485 Hildebrand C, Remahl S...
Composition of myelin Metazoa animals lipids 70 - 80: protein 20 - 30 % 114494 Hildebrand C, Remahl S...
Number of myelin sheaths each oligodendrocyte is connected to Mammals ≤30 - 60 myelin sheaths 114490 Hildebrand C, Remahl S...
Average number of neurons in the mouse brain Mouse Mus musculus 7.5e+7 unitless 100731 http://www.nervenet....
Percent of total serotonin produced in enterochromaffin cells Various 90 Percent 102687 Indiana University school...
Number of cells in larval nervous system Tunicate Ciona intestinalis 335 (±4) Unitless 105864 Nicol D, Meinertzhagen...
Number of presynaptic calcium channels open for each vesicle that is released Rat Rattus norvegicus 60 Unitless 103550 Borst, J.G.G. & Sakmann...
Influx of Ca2+ triggerred by presynaptic action potential Rat Rattus norvegicus 12000 Ca2+/vesicle released 108626 Attwell D, Laughlin SB....
Expansion in the size of the brain relative to the body in humans compared to lower primates Human Homo sapiens 3 fold expansion 111648 Harris JJ, Jolivet R...
Comparison of white matter to gray matter in brain Unspecified energy use: white matter is 3-fold lower than gray matter: density of synapses: 80 fold lower N/A 111650 Harris JJ, Jolivet R...
Diameter of axon above which the great majority of axons are myelinated Metazoa animals >0.3 µm 110609 Harvey A. Swadlow and...
Conduction velocities of impulse between corticospinal tract and brainstem Monkey ≤110 m/sec 110612 Harvey A. Swadlow and...