References in periodicals archive ?
Spatial summation describes the way in which the visual system 'adds up' the amount of light energy across the area of a stimulus.
A new method for measuring pain threshold: observations on spatial summation of pain.
Spatial summation of nociceptive inputs from multiple active TrPs may contribute to clinical manifestations of CTTH.
Temporal and Spatial Summation in Human Vision at Different Background Intensities.

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