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spatial summation

noun
1.
See under summation (def 5).
Origin of spatial summation
1965-1970
1965-70

summation

[suh-mey-shuh n] /səˈmeɪ ʃən/
noun
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 from them.
4.
Law. the final arguments of opposing attorneys before a case goes to the jury.
5.
Physiology. the arousal of impulses by a rapid succession of stimuli, carried either by separate sensory neurons (spatial summation) or by the same sensory neuron (temporal summation)
Origin
1750-60; < Medieval Latin summātiōn- (stem of summātiō), equivalent to summāt(us) (past participle of summāre to sum; see -ate1) + -iōn- -ion
Related forms
summational, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for spatial summation

summation

/sʌˈmeɪʃən/
noun
1.
the act or process of determining a sum; addition
2.
the result of such an act or process
3.
a summary
4.
(US, law) the concluding statements made by opposing counsel in a case before a court
Derived Forms
summational, adjective
summative, adjective
Word Origin
C18: from Medieval Latin summātiō, from summāre to total, from Latin summasum1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for spatial summation

summation

n.

1760, from Modern Latin summationem (nominative summatio) "an adding up," from Late Latin summatus, past participle of summare "to sum up," from Latin summa (see sum).

Online Etymology Dictionary, © 2010 Douglas Harper
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spatial summation in Medicine

summation sum·ma·tion (sə-mā'shən)
n.
The process by which multiple or repeated stimuli can produce a response in a nerve, muscle, or other part that one stimulus alone cannot produce.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Word Value for spatial

9
11
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