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Projecting two words with one machine: Presenting two different visual stimuli using just one projector without viewers’ noticing the duality

Behavior Research Methods volume 39, pages 811–815 (2007)Cite this article

Abstract

A new method, named the fMORI technique, for presenting two different visual stimuli using just one video projector without the viewers’ noticing the duality is introduced along with several sample applications of this presentation method. The LCD projectors available now have three color LCD panels aligned differently in terms of their polarization, polarizing differently the green and magenta (red plus blue) components of its emitting image. Therefore, two visual stimuli either in green or in magenta projected on the same screen can be observed separately by subjects wearing an appropriate polarizing filter. This is a variation of the MORI technique (Mori, 2003, 2007b) but it requires only one video projector rather than two. Full-color movies cannot be presented with the fMORI technique, but it may be utilized in various research areas in which only static monochrome visual stimuli, such as words or numbers, are used.

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Author notes

  1. Kazuo Mori

    Present address: Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan

Affiliations

  1. Shinshu University, Tokyo, Japan

    Kazuo Mori

Authors
  1. Kazuo Mori
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Correspondence to Kazuo Mori.

Additional information

This research was supported by Grant-in-Aid 16653054 from the Japanese Ministry of Education, Culture, Sports, Science, and Technology.

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Mori, K. Projecting two words with one machine: Presenting two different visual stimuli using just one projector without viewers’ noticing the duality. Behavior Research Methods 39, 811–815 (2007). https://doi.org/10.3758/BF03192973

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  • DOI: https://doi.org/10.3758/BF03192973

Keywords

  • Visual Stimulus
  • Social Comparison
  • Polarize Filter
  • Video Projector
  • Minority Participant