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spatial vs. temporal summation

[spey-shuhl] / ˈspeɪ ʃəl /
Rarely spacial

adjective

  1. of or relating to space, the three-dimensional realm or expanse in which all material objects are located and all events occur.

  2. existing or occurring in space; having extension in space.

[tem-per-uhl suh-mey-shuhn, tem-pruhl] / ˈtɛm pər əl səˈmeɪ ʃən, ˈtɛm prəl /

noun

  1. Physiology. summation5