THE INTEGRATION OF SPACED SIGNALS

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Abstract
An attempt is made to investigate the relationship between characteristics of temporally spaced visual input signals and the accuracy with which these signals can be integrated. Experiments are described in which subjects were required to estimate the mean position of a pointer which appeared successively in a number of positions upon an ungraduated scale Two types of display were used; the first was a horizontal linear one and the second was semicircular. In each case the subject was required to make his response on a scale identical in shape and size to the corresponding display. The two major independent variables were the number of signals to be integrated, and the pattern of presentation of these signals. The results show that both these variables have an important effect upon the accuracy of judgment of the mean. The concept ‘ amount of information ’ as used in communication theory is used to compare the performances on the two types of display used. Further comparisons are drawn between the experiments described here and those of other investigators dealing with signals presented simultaneously.

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