Time for transduction of olfactory stimulus to nervous system
|
Tiger salamander Ambystoma tigrinum |
~150 |
msec |
112580 |
Olofsson JK. Time to... |
Number of neurons and microglia in each body ganglia of the nervous system
|
European medicinal leech Hirudo medicinalis |
neurons ~400: microglia ~10,000 |
N/A |
114496 |
Biber K, Owens T, Boddeke... |
Duration of reconsolidation (during which memory trace becomes labile and subject to long term revision by psychological processes)
|
Human Homo sapiens |
5 minutes to 1 hour |
N/A |
113185 |
Post RM, Kegan R. Prevention... |
Ratio between peak synaptic density in early childhood compared to adult density
|
Human Homo sapiens |
1.5 - 2 |
times higher in childhood peak |
113751 |
Chechik G, Meilijson I... |
Ratio between energy demands per unit weight of brain and that of muscle
|
Human Homo sapiens |
~16 |
times higher in brain |
113753 |
Leonard WR, Robertson ML... |
Fraction of daily energy budget allocated to brain
|
Mammals |
adult human ~20-25: other primates 8-10: other (non-primate) mammals 3-5 |
% |
113754 |
Leonard WR, Robertson ML... |
Concentration of glutamate in forebrain and cerebellum (about 50% less in various parts of brain stem)
|
Unspecified |
10 |
µmol/g |
115056 |
Krnjević, K. "Chemical... |
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... |
Brain weight of Eurasian pygmy shrew (Sorex minutus) and sperm whale (Physeter macrocephalus)
|
Mammals |
Sorex minutus 0.25: Physeter macrocephalus 9,000 |
grams |
115167 |
Haug H. Brain sizes, surfaces... |
Comparison of the dimensions of hippocampal CA1 dendritic spines with cerebellar dendritic spines
|
Rat Rattus norvegicus |
Table - link |
N/A |
111664 |
KM Harris and JK Stevens... |
Fraction of ATP produced in central nervous system
|
Unspecified |
mitochondria (using the citric acid cycle followed by oxidative phosphorylation) ~93: glycolysis ~7 |
% |
111657 |
Harris JJ, Jolivet R... |
Axonal action potential properties from recent studies of cell types in three major brain regions
|
Mammals |
Table - link |
N/A |
111176 |
Kress GJ, Mennerick S.... |
Once internalized (in endocytosis), synaptic vesicles become reavailable for exocytosis in
|
Rat Rattus norvegicus |
~30 |
sec |
112763 |
Ryan TA et al., The kinetics... |
Stability of dendritic spines in visual cortex
|
Mouse Mus musculus |
94% of spines were stable >three days: 81% stable >2 weeks: 73% stable >one month |
% |
112030 |
Meyer, M.P., Niell, C.M... |
Fraction of the time that the late-spiking (LS) inhibitory interneuron made electrical synapses to other LS cells in layer I of the neocortex
|
Rat Rattus norvegicus |
83 |
% of the time |
117161 |
Connors BW, Long MA.... |
Age (of cell) in which newly generated granule cells begin to make functional afferent and efferent connections (after having migrated into the granule cell layer of the DG (dentate gyrus, in hippocampus)) in adult animals
|
Mouse Mus musculus |
~2 |
weeks of age of granule cell |
117233 |
Josselyn SA, Frankland... |
Fraction of all dentate gyrus granule cells that are new (defined as <8 weeks of age) neurons
|
Rat Rattus norvegicus |
at 3 months old >25%: at 12 months old 5% |
% of all dentate gyrus granule cells |
117231 |
Josselyn SA, Frankland... |
Rough number of CA3 (Cornu Ammonis region 3 (in hippocampus)) pyramidal neurons each dentate gyrus granule cell contacts with
|
Rat Rattus norvegicus |
10-15 |
CA3 pyramidal neurons |
117232 |
Josselyn SA, Frankland... |
"Horizon of simultaneity" - distance from the observer that will result in the approximate synchronous arrival of auditory and visual information at the primary sensory cortices
|
Human Homo sapiens |
10 - 15 |
meters |
112389 |
The neural bases of ... |
Density of presynaptic terminals along the parallel fibers or ascending segments in brain
|
Mouse Mus musculus |
1 |
presynaptic terminal/4µm |
112026 |
Li L et al., Visualizing... |