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spatial summation - 3 dictionary results

spatial summation

–noun
See under summation (def. 5).

Origin:
1965–70

sum⋅ma⋅tion

[suh-mey-shuhn]
–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; < ML summātiōn- (s. of summātiō), equiv. to summāt(us) (ptp. of summāre to sum; see -ate 1 ) + -iōn- -ion


sum⋅ma⋅tion⋅al, adjective

Main Entry: spatial summation
Function: noun
: sensory summation that involves stimulation of several spatially separated neurons at the same time
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