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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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Subliminal Perception01:15

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Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
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Cognitive Learning01:21

Cognitive Learning

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Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
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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:
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Parallel Processing01:20

Parallel Processing

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The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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Perceptual Constancy01:12

Perceptual Constancy

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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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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

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Perceptual learning: top to bottom.

Sygal Amitay1, Yu-Xuan Zhang1, Pete R Jones1

  • 1Medical Research Council Institute of Hearing Research, University Park, Nottingham NG7 2RD, United Kingdom.

Vision Research
|December 4, 2013
PubMed
Summary
This summary is machine-generated.

Perceptual learning involves more than just sensory changes; it also enhances cognitive skills like attention and memory. This process improves signal-to-noise ratio, benefiting diverse populations beyond typical study participants.

Keywords:
AuditoryDecision inefficiencyDecision makingInternal noisePerceptual learningTransfer of learning

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Auditory Perception

Background:

  • Perceptual learning traditionally viewed as bottom-up sensory improvement.
  • Cognitive skills (attention, memory) modulate but aren't typically seen as changed by training.
  • Threshold shifts often attributed solely to perceptual sensitivity, ignoring decision-making factors.

Purpose of the Study:

  • To investigate perceptual learning as a multifaceted process.
  • To explore changes across processing levels, from sensory encoding to cognitive functions.
  • To examine the role of non-sensory factors in perceptual tasks.

Main Methods:

  • Analysis of training-induced changes in auditory frequency discrimination.
  • Examination of effects across multiple levels of information processing.
  • Consideration of both sensory and non-sensory contributions to performance.

Main Results:

  • Perceptual learning encompasses changes from low-level sensory processing (e.g., auditory signal phase locking) to high-level cognitive functions (e.g., working memory capacity).
  • Non-sensory factors, including response bias, significantly influence decision-making in perceptual tasks.
  • Training enhances the signal-to-noise ratio by addressing bottlenecks at various processing stages.

Conclusions:

  • Perceptual learning is a complex integration of sensory and cognitive adaptations.
  • Understanding these broader effects has implications for designing effective training programs for varied populations.
  • Future research should consider the interplay of sensory and non-sensory factors in perceptual skill acquisition.