Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Perception

  • John E. MendozaEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_770

Definition

A cortical process that results in a subjective sensory experience that is potentially meaningful or recognizable.

Current Knowledge

Although commonly used in a multimodal context (“My perceptionof the children was unfavorable”), in a strict physiological sense, basic percepts involve a single sensory modality and must be distinguished from sensations. Sensations are elementary sensory inputs that are picked up by peripheral receptor cells and registered in the brain. While capable of being recognized as events, in and of itself an elementary sensation is thought to be essentially indistinguishable from similar events in the same modality. In contrast, a perception is a higher-order process that takes place exclusively within the brain and involves the integration of elementary sensory input into an orderly form or “whole” capable of differentiation. Thus, a sensation requires some type of sensory input or stimulus (usually external), whereas it is possible to mentally...

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References and Readings

  1. Bauer, R. M., & Demery, J. A. (2003). Agnosia. In K. M. Heilman & E. Valenstein (Eds.), Clinical neuropsychology (4th ed., pp. 236–295). New York: Oxford University Press.Google Scholar
  2. Gazzaniga, M. S., Ivry, R. B., & Mangun, G. R. (2002). Cognitive neuroscience: The biology of the mind (2nd ed.). New York: W.W. Norton.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Psychiatry and NeuroscienceTulane Medical School and SE Louisiana Veterans Healthcare SystemNew OrleansUSA