Encyclopedia of Color Science and Technology

Living Edition
| Editors: Ronnier Luo

Ganzfeld

  • Sunčica Zdravković
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27851-8_347-1

Definition

A ganzfeld (“whole field” in German) is an absolutely homogeneous region of space that covers an observer’s entire visual field. It can be of any single uniform wavelength and intensity.

History

The ganzfeld was first introduced in 1930 [1], by German Gestalt psychologist Wolfgang Metzger (1899–1979). Metzger was interested in elementary visual phenomena produced by impoverished visual conditions. The ganzfeld contains no luminance border, luminance ramp, or texture. The light reaching the eye is absolutely equal from all possible directions. Such conditions, called whiteout, can occur naturally during a snowstorm or in an airplane flying through clouds.

Perceptual Experience in the Ganzfeld

The typical visual phenomenology, for a person of normal sight, includes the emergence of “Eigengrau” [2], a uniform gray fog of indeterminate depth. This percept occurs regardless of the physical intensity and wavelength of the ganzfeld. Any color in a ganzfeld will eventually fade to...

Keywords

Alpha Activity Total Darkness Sensory Deprivation Monocular Viewing Introspective Report 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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References

  1. 1.
    Metzger, W.: Optische Untersuchungen am Ganzfeld. Psychol. Forsch. 13, 6–29 (1930)CrossRefGoogle Scholar
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    Schubert, J., Gilchrist, A.L.: Relative luminance is not derived from absolute luminance. Invest. Ophthalmol. Vis. Sci. 33(Suppl.), 1258 (1992)Google Scholar
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    Gur, M.: Color and brightness fade-out in the ganzfeld is wavelength dependent. Vision Res. 29(10), 1335–1341 (1989)CrossRefGoogle Scholar
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    Bolanowski, S.J., Doty, R.W.: Perceptual blankout of monocular homogeneous fields (Ganzfelder) is prevented with binocular viewing. Vision Res. 27, 967–982 (1987)CrossRefGoogle Scholar
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    Gur, M.: Perceptual fade-out occurs in the binocularly viewed Ganzfeld. Perception 20(5), 645–654 (1991)CrossRefGoogle Scholar
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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Faculty of Philosophy, Department of PsychologyUniversity of Novi SadNovi SadSerbia
  2. 2.Laboratory for Experimental PsychologyUniversity of BelgradeBelgradeSerbia