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Related Concept Videos

Perception01:28

Perception

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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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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:
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Perception of Sound Waves01:01

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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.
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Sensory Modalities01:15

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Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
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Introduction to Special Senses01:26

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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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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.
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Peripheral material perception.

Shaiyan Keshvari1,2, Maarten W A Wijntjes3,4

  • 1Department of Psychology, York University, Toronto, ON, Canada.

Journal of Vision
|April 16, 2024
PubMed
Summary
This summary is machine-generated.

Humans identify materials using visual cues, but simple textures aren't enough for detailed perception. Peripheral vision, however, relies more on these statistical texture cues for material classification.

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Area of Science:

  • Vision science
  • Computational neuroscience
  • Material perception

Background:

  • Humans can readily identify materials despite appearance variations.
  • Prior research points to image texture features for material identification.
  • Biologically motivated texture models are less explored in material perception studies.

Purpose of the Study:

  • To investigate visual cues used for material identity.
  • To compare material classification using simple textures versus complex models.
  • To understand the role of texture in foveal and peripheral vision.

Main Methods:

  • Assessed material classification performance using baseline, synthetic textures (Portilla-Simoncelli model), and image degradations.
  • Compared performance in foveal (central) and peripheral (off-center) vision.
  • Evaluated if textures and degradations predict peripheral material classification.

Main Results:

  • Classification performance with synthetic textures and most degradations was significantly below baseline for foveal vision.
  • Peripheral vision performance was better predicted by texture and image degradation models.
  • This suggests peripheral vision may utilize statistical, texture-like representations for material perception.

Conclusions:

  • Simple statistical textures are insufficient for detailed foveal material identification.
  • Peripheral vision appears to rely more heavily on texture-based cues for classifying materials.
  • Findings highlight differences in visual processing between central and peripheral vision for material perception.