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Related Concept Videos

State Space Representation01:27

State Space Representation

The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
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High-Level and Low-Level Awareness01:19

High-Level and Low-Level Awareness

Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
Framing Effects03:26

Framing Effects

Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in different ways based on the...
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Vectors in Space: Problem Solving

A chandelier suspended by multiple cables can be analyzed using principles of three-dimensional static equilibrium. In this setup, a chandelier weighing 1000 N is positioned at the origin of a three-dimensional coordinate system, while three ceiling anchor points are fixed at known locations above it. Each cable connects the chandelier to one anchor point and transmits a tensile force along its length.To find out the forces in the cables, the spatial direction of each cable must first be...
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Perceptual Constancy

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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
13:00

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

Minding time in an amodal representational space.

Virginie van Wassenhove1

  • 1Cognitive Neuroimaging Unit, Commissariat à l'Energie Atomique, NeuroSpin Center, Bât 145, Point Courier 156, Gif-sur-Yvette, France. virginie.van-wassenhove@cea.fr

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|June 3, 2009
PubMed
Summary
This summary is machine-generated.

Understanding time perception involves complex temporal processing and multisensory integration. This study proposes a two-step model where temporal properties are automatically encoded and then refined through attention for conscious perception.

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Published on: October 24, 2012

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Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Sensory Perception

Background:

  • Time perception is subjective and influenced by various factors like attention and sensory input.
  • Existing research faces theoretical challenges in representing time and temporal processing.
  • Multisensory interactions play a significant role in temporal judgment tasks.

Purpose of the Study:

  • To explore theoretical difficulties in time perception research.
  • To review the influence of multisensory perception on temporal judgments.
  • To propose a novel two-step model for temporal property analysis.

Main Methods:

  • Review of theoretical frameworks in time perception.
  • Analysis of empirical findings on multisensory temporal effects.
  • Development of a conceptual two-step model for temporal processing.

Main Results:

  • Sensory modalities integrate temporal properties for unified time perception.
  • Representational formats across senses are compatible for temporal integration.
  • A two-step model suggests automatic encoding followed by attentional gating and re-encoding.

Conclusions:

  • Temporal properties are initially encoded automatically during sensory analysis.
  • Attentional mechanisms and abstract re-encoding are crucial for conscious temporal perception.
  • This model provides a framework for understanding the complexities of subjective time.