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Related Concept Videos

Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at the...
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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.
Storage01:23

Storage

A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...
Propagation of Action Potentials01:23

Propagation of Action Potentials

The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
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Automatic Processing and Automatic Social Behavior

Automatic processing refers to the cognitive operations that occur without conscious intent or awareness, playing a fundamental role in shaping social cognition and behavior. These processes enable individuals to navigate complex social environments efficiently by relying on mental shortcuts and pre-existing knowledge structures known as schemas. One of the most influential mechanisms underlying automatic processing is priming, which subtly activates mental representations through exposure to...
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Action Potential

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Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...

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Related Experiment Video

Updated: Jun 27, 2026

A Semantic Priming Event-related Potential (ERP) Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder
08:17

A Semantic Priming Event-related Potential (ERP) Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder

Published on: April 12, 2018

Semantic priming in a cortical network model.

Nicolas Brunel1, Frédéric Lavigne

  • 1Université René Descartes, Paris, France.

Journal of Cognitive Neuroscience
|November 20, 2008
PubMed
Summary
This summary is machine-generated.

This study models semantic priming effects using neural network simulations. The model explains priming phenomena and hemispheric differences based on association strength, offering insights into memory recall.

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Last Updated: Jun 27, 2026

A Semantic Priming Event-related Potential (ERP) Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder
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Area of Science:

  • Cognitive Neuroscience
  • Computational Neuroscience

Background:

  • Human contextual recall depends on semantic memory relationships, studied via priming experiments.
  • Priming experiments reveal reaction time variations based on association strength and timing.
  • Similarities exist between human priming and monkey pair association tasks, with observed retrospective and prospective neural activities.

Purpose of the Study:

  • To demonstrate how mathematical models of cortical networks can explain diverse priming effects.
  • To link single neuron and synapse physiology to network behaviors like retrospective and prospective activity.
  • To interpret hemispheric semantic priming differences using a single association strength parameter.

Main Methods:

  • Utilizing mathematical models of cortical networks.
  • Simulating network behavior to replicate retrospective and prospective neural activity.
  • Analyzing model outputs to account for various priming phenomena.

Main Results:

  • The network model successfully accounts for a wide range of priming effects.
  • The model demonstrates how retrospective and prospective activities arise from network dynamics.
  • Hemispheric differences in semantic priming are explained by variations in a single association strength parameter.

Conclusions:

  • Cortical network models provide a powerful framework for understanding semantic priming.
  • The model elucidates the neural basis of memory recall and association.
  • Association strength is a key factor influencing semantic priming and hemispheric asymmetries.