Phosphor persistence of oscilloscopic displays: a comparison of four phosphors

Authors: Di Lollo, Vincent¹; Seiffert, Adriane E.²; Burchett, Gary³; Rabeeh, Richard³; Ruman, Tanya A.³

Source: Spatial Vision, Volume 10, Number 4, 1997 , pp. 353-360(8)

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Abstract:

The period for which phosphor decay remains visible after stimulus offset was assessed for four phosphors commonly used in psychophysical experiments: P4, P15, P31, and P46. Stimuli were displayed behind closed shutters which opened at various intervals after stimulus offset. Thus, the observers' responses were based solely on the visibility of phosphor persistence. We varied viewing conditions (dark-adapted vs. veiling light), type of task (detection vs. identification), and intensity of the stimuli. No detectable persistence was ever produced by the P15 phosphor. In contrast, the P31 phosphor remained visible for several hundred ms, even with a veiling light. The P4 and P46 phosphors produced persistence of intermediate durations. It is concluded that P15 is the phosphor of choice for visual experiments.

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156856897X00276

Affiliations: 1: Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver, BC V6T IZ4, Canada 2: Department of Psychology, William James Hall, Harvard University, 33 Kirkland Street, Cambridge, MA 02138, USA 3: Department of Psychology, University of Alberta, Edmonton, Alberta T6G 2E9, Canada

Publication date: 1997-01-01

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