@article{ref1,
title="Local Signature and Sensational Extensity",
journal="Journal of experimental psychology",
year="1921",
author="Ruediger, W. C.",
volume="4",
number="6",
pages="469-474",
abstract="Of the various theories aiming to account for local signs, two seem especially worthy of consideration: the sensory-complex theory, according to which sensations from spatial modalities are all respectively alike, but combine to give differences in local signs; and the sensory-element theory, which postulates a slight difference in every sensation by means of which associations of specific location are formed. In the present article reports are made of experiments in which 1 gr. and 10 gr. pressures were applied in one series to a conspicuous vein, and in another to a portion of the skin where no vein was in evidence. Localization of pressure was more accurate on a vein where the subcutaneous tissue is uniform than on other parts of the skin; and the weak stimuli were localized slightly more accurately than the strong. Both of these results would seem to argue against the complex theory and for the sensation-element theory: differences inhere in the elementary qualities of sensation and give rise to awarenesses of location; these minute differences, when combined in perceptual patterns, form the basis for awareness of size and extent. From Psych Bulletin 19:07:00452. (PsycINFO Database Record (c) 2012 APA, all rights reserved)<p />",
language="",
issn="0022-1015",
doi="10.1037/h0073271",
url="http://dx.doi.org/10.1037/h0073271"
}