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Related Concept Videos

Perception01:28

Perception

1.5K
Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
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Factors Affecting Perception01:25

Factors Affecting Perception

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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
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Perception of Sound Waves01:01

Perception of Sound Waves

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The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

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The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
11.5K
Perceptual Constancy01:12

Perceptual Constancy

1.6K
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
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Gestalt Principles of Perception01:21

Gestalt Principles of Perception

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Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
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Related Experiment Video

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Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

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Material Perception.

Roland W Fleming1

  • 1Department of Experimental Psychology, University of Giessen, 35394 Giessen, Germany;

Annual Review of Vision Science
|July 13, 2017
PubMed
Summary
This summary is machine-generated.

Human vision effortlessly recognizes material properties like texture and deformability, despite complex visual cues. Understanding how we perceive materials challenges fundamental assumptions in vision science.

Keywords:
deep learningmid-level visionreflectancesurfacestexturetransparency

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Area of Science:

  • Vision science
  • Perceptual psychology
  • Material science

Background:

  • Humans visually infer material properties (e.g., texture, hardness, wetness) without touch.
  • Visual perception of materials involves complex interactions of light, shape, and material properties.
  • Material appearance is diverse, mutable, and complex, posing significant challenges to scientific understanding.

Purpose of the Study:

  • To explore the challenges materials pose to vision science.
  • To investigate how material appearance is defined, measured, estimated, and represented.
  • To re-examine foundational assumptions in mid-level vision research.

Main Methods:

  • Conceptual analysis of material perception.
  • Review of existing literature in vision science and related fields.
  • Argumentation based on the complexity of visual information processing.

Main Results:

  • Material appearance is a complex phenomenon resulting from intricate optical interactions.
  • Current understanding of mid-level vision may be insufficient to fully explain material perception.
  • Significant challenges exist in defining and measuring material appearance.

Conclusions:

  • Perceiving material properties is a remarkable feat of human vision.
  • Addressing the complexities of material appearance requires scrutinizing basic assumptions in vision science.
  • Further research is needed to understand the representation and estimation of material properties.