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Related Concept Videos

Parallel Processing01:20

Parallel Processing

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...
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...
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
Subconsciousness and No Awareness01:15

Subconsciousness and No Awareness

The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
Visual System01:26

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
Vision01:24

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.

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Related Experiment Video

Updated: Jun 30, 2026

Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
07:34

Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues

Published on: June 3, 2013

Brain mechanisms involved in processing unreal perceptions.

Jeonghun Ku1, Jae-Jin Kim, Young Chul Jung

  • 1Department of Biomedical Engineering, Hanyang University, Seoul, Korea. kujh@bme.hanyang.ac.kr

Neuroimage
|September 20, 2008
PubMed
Summary
This summary is machine-generated.

Researchers explored brain mechanisms for recognizing unreal perceptions. Brain activity in the amygdala, frontal cortex, and thalamus correlated with how well individuals could gain insight into unreality.

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Last Updated: Jun 30, 2026

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Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • Illusory and hallucinatory perceptions are often transient.
  • Recognizing the unreality of a perception is key to its resolution.

Purpose of the Study:

  • To investigate the neural mechanisms underlying the process of gaining insight into unreal perceptions.
  • To understand how the brain differentiates between real and illusory sensory experiences.

Main Methods:

  • Utilized a novel paradigm combining functional magnetic resonance imaging (fMRI) and augmented reality (AR).
  • Simulated visual illusory stimuli mimicking hallucinations within a brain scanning environment.
  • Assessed individual proneness to hallucinating.

Main Results:

  • Identified distinct patterns of brain activation across different phases of insight.
  • Early phase: Amygdala activation correlated with emotional response.
  • Middle phase: Medial frontal cortex and occipitotemporal junction activation linked to monitoring and recalibration.
  • Late phase: Thalamus activation associated with resolving the perception.

Conclusions:

  • Brain activation patterns suggest distinct stages in processing and resolving unreal perceptions: responding, monitoring, and resolving.
  • The findings provide insights into the neural basis of reality discrimination.
  • The developed paradigm and results may aid in understanding and managing hallucinatory experiences.