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Related Concept Videos

Perception01:28

Perception

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...
Factors Affecting Perception01:25

Factors Affecting Perception

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...
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

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...
Introducing Social Perception01:29

Introducing Social Perception

Perceiving others accurately is fundamental to effective communication and relationship-building. Social perception, a key concept in social psychology, refers to the cognitive processes through which individuals gather and interpret information about others to understand their actions, intentions, and motivations. This process extends beyond spoken words and overt behaviors, incorporating subtle nonverbal cues and contextual factors.Nonverbal Cues and Their SignificanceNonverbal cues play a...
The Looking Glass Self01:28

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The concept of the looking-glass self describes how an individual's self-concept is shaped by their perception of how others see them. This psychological theory, first introduced by sociologist Charles Horton Cooley in 1902, posits that self-identity emerges in a social context and is influenced by the judgments—real or imagined—of others.Research suggests that individuals frequently overestimate how positively others perceive them. This is particularly evident in physical self-perception,...
Gestalt Psychology01:14

Gestalt Psychology

Gestalt psychology, founded by Max Wertheimer, Kurt Koffka, and Wolfgang Kohler, emphasizes the importance of understanding perception as an organized whole. Developed as a counter to Wilhelm Wundt's structuralism, this approach posits that our perceptions are more than just the sum of sensory parts; they are comprehensive wholes where the relationships between parts define the perception. The principle "The whole is greater than the sum of its parts" encapsulates this view, illustrating how...

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Related Experiment Video

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Creating Objects and Object Categories for Studying Perception and Perceptual Learning
14:38

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Published on: November 2, 2012

Seeing what we know and understand: how knowledge shapes perception.

Rasha Abdel Rahman1, Werner Sommer

  • 1Humboldt University, Berlin, Germany. rasha.abdel.rahman@cms.hu-berlin.de

Psychonomic Bulletin & Review
|November 13, 2008
PubMed
Summary

Deep knowledge influences how we see and identify objects, even affecting early visual processing. This semantic knowledge shapes perception, impacting recognition speed and accuracy.

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Object Recognition

Background:

  • Expertise in object recognition relies on perceptual experience and semantic knowledge.
  • While perceptual experience's impact is known, semantic knowledge's influence on object perception is less understood.

Purpose of the Study:

  • To investigate how in-depth semantic knowledge influences object perception and identification.
  • To determine if knowledge affects early visual processing and meaning access.

Main Methods:

  • Recording event-related brain potentials (ERPs) to measure brain activity.
  • Presenting initially unfamiliar objects with varying levels of acquired knowledge.
  • Using blurred object pictures to increase perceptual difficulty.

Main Results:

  • Acquired knowledge modulated visual ERP components as early as 120 msec after object presentation.
  • Knowledge influenced brain activity in systems associated with meaning access.
  • Knowledge enhanced perceptual analysis and recognition, especially with blurred images.

Conclusions:

  • In-depth semantic knowledge shapes early visual processes, contrary to previous assumptions.
  • Knowledge influences both involuntary semantic memory access and perceptual analysis.
  • This demonstrates a profound interaction between knowledge and visual perception.