# spatial summation

**spatial summation***n*sensory summation that involves stimulation of several spatially separated neurons at the same time

*Medical dictionary.
2011.*

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**Spatial summation**— is a way of achieving action potential in a neuron which involves input from multiple cells. Spatial summation is the algebraic summation of potentials from different areas of input, usually on the dendrites. Summation of excitatory postsynaptic… … Wikipedia**spatial summation**— noun Date: 1968 sensory summation that involves stimulation of several spatially separated neurons at the same time … New Collegiate Dictionary**spatial summation.**— See under summation (def. 5). [1965 70] * * * … Universalium**spatial summation**— noun : sensory summation that involves stimulation of several spatially separated neurons at the same time … Useful english dictionary**spatial summation.**— See under summation (def. 5). [1965 70] … Useful english dictionary**summation**— summational, adj. /seuh may sheuhn/, n. 1. the act or process of summing. 2. the result of this; an aggregate or total. 3. a review or recapitulation of previously stated facts or statements, often with a final conclusion or conclusions drawn… … Universalium**summation**— The aggregation of a number of similar neural impulses or stimuli. [Mediev. L. summatio, fr. summo, pp. atus, to sum up, fr. L. summa, sum] s. of stimuli cumulative muscular or neural effects produced by the frequent repetition of stimuli. * * *… … Medical dictionary**Temporal summation**— is an effect generated by a single neuron as a way of achieving action potential. Summation occurs when the time constant is sufficiently long and the frequency of rises in potential are high enough that a rise in potential begins before a… … Wikipedia**Ewald summation**— is a method for computing the interaction energies of periodic systems (e.g. crystals), particularly electrostatic energies. Ewald summation is a special case of the Poisson summation formula, replacing the summation of interaction energies in… … Wikipedia**Indicators of spatial association**— are statistics that evaluate the existence of clusters in the spatial arrangement of a given variable. For instance if we are studying cancer rates among census tracts in a given city local clusters in the rates mean that there are areas that… … Wikipedia