Perception
From The Art and Popular Culture Encyclopedia
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Perception (from the Latin perceptio, percipio) is the organization, identification, and interpretation of sensory information in order to represent and understand the environment. All perception involves signals in the nervous system, which in turn result from physical or chemical stimulation of the sense organs. For example, vision involves light striking the retina of the eye, smell is mediated by odor molecules, and hearing involves pressure waves.
Since the rise of experimental psychology in the 19th Century, psychology's understanding of perception has progressed by combining a variety of techniques. Psychophysics quantitatively describes the relationships between the physical qualities of the sensory input and perception. Sensory neuroscience studies the brain mechanisms underlying perception.
Although the senses were traditionally viewed as passive receptors, the study of illusions and ambiguous images has demonstrated that the brain's perceptual systems actively and pre-consciously attempt to make sense of their input. There is still active debate about the extent to which perception is an active process of hypothesis testing, analogous to science, or whether realistic sensory information is rich enough to make this process unnecessary.
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Etymology
From Middle English perceiven, from Old French percevoir, perceveir, from Latin percipere, past participle perceptus (“take hold of, obtain, receive, observe”), from per (“by, through”) + capere (“to take”); see capable. Compare conceive, deceive, receive.
By medium
seeing - tasting - hearing - feeling - smelling
Related
attention - experience - sense - sensation - synaesthesia
See also
- Action-specific perception
- Alice in Wonderland syndrome
- Apophenia
- Change blindness
- Introspection
- Model-dependent realism
- Near sets
- Neural correlates of consciousness
- Pareidolia
- Perceptual paradox
- Qualia
- Samjñā, the Buddhist concept of perception
- Simulated reality
- Simulation
- Visual routine
- Transsaccadic memory