summation


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.

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sum·ma·tion (.)sə-'mā-shən n cumulative action or effect esp the process by which a sequence of stimuli that are individually inadequate to produce a response are cumulatively able to induce a nerve impulse see SPATIAL SUMMATION, TEMPORAL SUMMATION

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sum·ma·tion (sə-maґshən) [L. summa total] the cumulative effects of a number of stimuli applied to a muscle, nerve, or reflex arc.

Medical dictionary. 2011.

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  • summation — sum·ma·tion /sə mā shən/ n: closing argument Merriam Webster’s Dictionary of Law. Merriam Webster. 1996. summation …   Law dictionary

  • Summation — steht für: Addition, eine der vier Grundrechenarten in der Arithmetik Summation (Neurophysiologie), die Verrechnung von in der Nervenzelle eintreffenden Nervenimpulsen …   Deutsch Wikipedia

  • Summation — Sum*ma tion, n. [Cf. F. sommation. See {Sum}, v. t.] The act of summing, or forming a sum, or total amount; also, an aggregate. [1913 Webster] Of this series no summation is possible to a finite intellect. De Quincey. [1913 Webster] …   The Collaborative International Dictionary of English

  • Summation — (lat.), Summierung, Ziehung der Summe, s. Addition …   Meyers Großes Konversations-Lexikon

  • Summation — Summation, das Zusammenzählen; summieren, zusammenzählen …   Kleines Konversations-Lexikon

  • Summation — Summation, Zusammenwirken mehrerer präsynaptischer Potentiale auf ein postsynaptisches Neuron. Bei zeitlicher S. erreichen mehrere präsynaptische Potentiale kurz hintereinander eine Synapse. Bei räumlicher S. laufen an mehreren Synapsen… …   Deutsch wörterbuch der biologie

  • Summation — Summation,die:⇨Zusammenzählung …   Das Wörterbuch der Synonyme

  • summation — 1760, from Mod.L. summationem (nom. summatio) an adding up, from L.L. summatus, pp. of summare to sum up, from L. summa (see SUM (Cf. sum)) …   Etymology dictionary

  • summation — ► NOUN 1) the process of adding things together. 2) the action of summing up. 3) a summary. DERIVATIVES summative adjective …   English terms dictionary

  • summation — [sə mā′shən] n. [ModL summatio] 1. the act or process of summing up, or of finding a total 2. a total or aggregate 3. the final summing up of arguments, as in a court trial or debate, before the decision is given …   English World dictionary

  • Summation — For evaluation of sums in closed form see evaluating sums. : Summation is also a term used to describe a process in synapse biology. Summation is the addition of a set of numbers; the result is their sum or total . The numbers to be summed may be …   Wikipedia


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