title: A Refresher of the Original Bloch's Law Paper (Bloch, July 1885).
abstract: In 1885, Adolphe-Moïse Bloch asked the following simple question "Is there a law describing the relationship between the duration of a light and its perceived intensity?" Based on a series of experiments using a Foucault regulator and a candle, Bloch concluded that "when the lighting duration varies from 0.00173 to 0.0518 seconds (…) the [visible] light is markedly in inverse proportion to its duration"-his famous law. As this law pertains to the more general and hotly debated question of accumulation of sensory information over time, it is timely to offer the public a full translation of Bloch's original paper (from French) and to present it within the context of contemporary research.
authors.affiliation: Laboratoire Psychologie de la Perception, Université Paris Descartes and CNRS, Paris, France.
authors.forename: Andrei
authors.initials: A
authors.lastname: Gorea
keywords: detection; drift-diffusion; information accumulation; linear systems; temporal integration; transfer function