1/f noise in human cognition

Science  24 Mar 1995:
Vol. 267, Issue 5205, pp. 1837-1839
DOI: 10.1126/science.7892611


When a person attempts to produce from memory a given spatial or temporal interval, there is inevitably some error associated with the estimate. The time course of this error was measured in a series of experiments where subjects repeatedly attempted to replicate given target intervals. Sequences of the errors in both spatial and temporal replications were found to fluctuate as 1/f noises. 1/f noise is encountered in a wide variety of physical systems and is theorized to be a characteristic signature of complexity.

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