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| Property | Organism | Value | Units | ID | Details |
|---|---|---|---|---|---|
| Number of synapses in cortex | Human Homo sapiens | 3.6e+14 (29,800 synapses/neuron) | Unitless | 106138 | Roth G, Dicke U. Evolution... |
| The sum of energy expended per vesicle of glutamate released | Eukaryotes | 164000 | ATP/vesicle released | 108667 | Attwell D, Laughlin SB.... |
| Number of granule cells that are associated with one Purkinje cell in cerebellum (in humans this number is ten times greater) | Rat Rattus norvegicus | ~300 | granules cells | 115026 | Morgado E et al., Th... |
| Overall non-neuronal/neuronal ratio in adult brain | Human Homo sapiens | 1 | Unitless | 106399 | Azevedo FA, Carvalho LR... |
| Fraction of neurons that are added to DG (dentate gyrus, in the hippocampus) after birth | macaque | ~40 | % | 117227 | Josselyn SA, Frankland... |
| Estimated cost of mammalian cerebral cortex and cerebellum | Mammals | Table - link | N/A | 110881 | Herculano-Houzel S. Scaling... |
| Axon diameter in the optic nerve | North American opossum Didelphis virginiana | myelinated 0.3-6.7µm (mean 1.6µm): unmyelinated 0.2-1.6µm (mean 0.6µm) | µm | 112118 | Kirby MA, Clift-Forsberg L... |
| Cell size parameters in AVP (arginine vasopressin) neurons in different age groups in the PVN (paraventricular nucleus) | Human Homo sapiens | Table - link | N/A | 106589 | Ishunina TA, Swaab DF.... |
| concentration of Pi in rat myocyte | Rat Rattus norvegicus | 8.05 | mM | 100864 | Leheninger - principles... |
| Length of giant neurons | Human Homo sapiens | >1 | meter | 109548 | Marguerat S, Bähler J.... |
| Total number of pyramidal neurons in the left hippocampus | Rat Rattus norvegicus | Table - link | N/A | 107842 | Akdogan I, Adiguzel E... |
| Number of presynaptic nerve terminals that most neurons form | Unspecified | >500 | nerve terminals/neuron | 111276 | Sudhof TC. The synaptic... |
| Number of neurons in the central nervous system of small free-living metazoans such as rotifers and nematodes | Eukaryotes | <300 | neurons | 109130 | Williams RW, Herrup K.... |
| Number of neurons in the central nervous system of the common octopus and small mammals such as shrews | Eukaryotes | ~30,000,000 | neurons | 109131 | Williams RW, Herrup K.... |
| Number of neurons in the central nervous system of whales and elephants | Mammals | >200,000,000,000 | neurons | 109132 | Williams RW, Herrup K.... |
| Ratio between granule and purkinje cells in brain | Mammals | 200 to 1 in mouse: 3,000 to 1 in human | Unitless | 106408 | Williams RW, Herrup K.... |
| Fluctuation in number of neurons in brain area involved in producing and recognizing song | Canary bird Serinus canaria | 40,000 in spring to 25,000 in fall and winter | Neurons | 106409 | Williams RW, Herrup K.... |
| Life cycle time of neuroblast | Eukaryotes | 8.5 | Hours | 106410 | Williams RW, Herrup K.... |
| Fraction of neurons in brain that are granule cells | Human Homo sapiens | 87.5 | % | 106407 | Williams RW, Herrup K.... |
| Specific energy usage in neocortex | Mammals | 30 | μmol ATPs/g/min | 108672 | Attwell D, Laughlin SB.... |