spatial summation
noun Date: 1968 sensory summation that involves stimulation of several spatially separated neurons at the same time

New Collegiate Dictionary. 2001.

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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 — n sensory summation that involves stimulation of several spatially separated neurons at the same time …   Medical 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

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