Subjective constancy


Subjective constancy

Subjective constancy or perceptual constancy is the perception of an object or quality as constant under changing conditions.

Vision

In vision this means perceiving a color as "constant under changing conditions of illumination" harv|Erickson|1975|pp=11-12 and "is the achievement of a very complicated 'calculation' by an unconsciously working apparatus within our central nervous system" harv|Lorenz|1961|p=171.

There are several types of perceptual constancies:-
* Shape constancy
* Size constancy
* Color constancy
* Lightness constancy
* Distance constancy
* Location constancy

Music

In music, subjective constancy is the identification of a musical instrument as constant under changing timbre or "conditions of changing pitch and loudness, in different environments and with different players." harv|Erickson|1975

peech

In speech perception this means that vowels or consonants are perceived as constant categories even if acoustically, they vary greatly due to phonetic environment (coarticulation), speech tempo, speaker's age and sex, speaker's dialect, etc.

References

*citation|last=Erickson|first=Robert|year=1975|title=Sound Structure in Music|publisher=University of California Press|isbn=0-520-02376-5.
*citation|last=Lorenz|first=Konrad|authorlink=Konrad Lorenz|year=1961|chapter=The Role of Gestalt Perception in Animal and Human Behaviour|title=Aspects of Form|pages=157-178|editor=Lancelot Law Whyte|publisher=Indiana University Press
*citation|last=Sayre|first=K.M.|year=1968|chapter=Toward a Quantitative Model of Pattern Formation|title=Philosophy and Cybernetics|pages=149-152|editor=Frederick J. Crosson and Kenneth M. Sayre|publisher=Simon and Schuster.


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Color constancy — Color constancy: The colors of a hot air balloon are recognized as being the same in sun and shade …   Wikipedia

  • Perception — For other uses, see Perception (disambiguation). Perceptual redirects here. For the Brian Blade album, see Perceptual (album). Robert Fludd s depiction of perception (1619) …   Wikipedia

  • Timbre — Not to be confused with Timber. For the Sophie B. Hawkins album, see Timbre (album). Spectrogram of the first second of an E9 chord played on a Fender Stratocaster guitar with noiseless pickups. Below is the E9 chord audio: In music, timbre ( …   Wikipedia

  • perception — perceptional, adj. /peuhr sep sheuhn/, n. 1. the act or faculty of apprehending by means of the senses or of the mind; cognition; understanding. 2. immediate or intuitive recognition or appreciation, as of moral, psychological, or aesthetic… …   Universalium

  • Evolution —     Evolution (History and Scientific Foundation)     † Catholic Encyclopedia ► Evolution (History and Scientific Foundation)     The world of organisms comprises a great system of individual forms generally classified according to structural… …   Catholic encyclopedia

  • The Law of Conservation of Energy —     The Law of Conservation of Energy     † Catholic Encyclopedia ► The Law of Conservation of Energy     Amongst the gravest objections raised by the progress of modern science against Theism, the possibility of Miracles, free will, the… …   Catholic encyclopedia

  • Truth — For other uses, see Truth (disambiguation). Time Saving Truth from Falsehood and Envy, François Lemoyne, 1737 Truth has a variety of meanings, such as the state of being in accord with fact or reality …   Wikipedia

  • Spiritual transformation — is the act of transforming the deepest aspects of the human spirit via a self induced or divine act.ee also*Integral transformative practice *Transpersonal psychology *Sivananda *MeditationThe Way of Spiritual Transformationby Hieromonk… …   Wikipedia

  • human behaviour — Introduction       the potential and expressed capacity for physical, mental, and social activity during the phases of human life.       Human beings, like other animal species, have a typical life course that consists of successive phases of… …   Universalium

  • Color — This article is about the perceptual property. For other uses, see Color (disambiguation). For usage of color on Wikipedia, see Wikipedia:Colors. Colored pencils Color or colour (see spelling differences) is the visual perceptual property… …   Wikipedia