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Related Concept Videos

Lateralization01:28

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
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...

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Related Experiment Video

Updated: May 25, 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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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

Selective alignment of brain responses by task demands during semantic processing.

Giosuè Baggio1

  • 1SISSA International School for Advanced Studies, via Bonomea 265, 34136 Trieste, Italy. gbaggio@sissa.it

Neuropsychologia
|January 17, 2012
PubMed
Summary
This summary is machine-generated.

The brain

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Area of Science:

  • Cognitive Neuroscience
  • Psycholinguistics
  • Neuroscience

Background:

  • The N400 effect in event-related potentials (ERPs) reflects semantic processing.
  • Its amplitude is linked to how well a word fits the preceding context.
  • Task demands may influence neural processes underlying language comprehension.

Purpose of the Study:

  • To investigate how task demands modulate the temporal characteristics of the N400 effect.
  • To explore the relationship between N400 latency, semantic fit, and behavioral output.
  • To understand the interaction between semantic processing and cognitive control systems.

Main Methods:

  • Event-related potentials (ERPs) were recorded from participants.
  • Participants engaged in two tasks: silent reading and a button-press response task.
  • N400 onset and peak latencies were analyzed for temporal alignment under different task conditions.

Main Results:

  • A double dissociation was observed in N400 latency characteristics based on task demands.
  • Silent reading showed greater N400 onset than peak alignment.
  • A behavioral response task revealed the opposite pattern, with stronger N400 peak alignment.
  • N400 peak amplitude correlated with less temporal dispersion in latency.

Conclusions:

  • Meaning construction is dynamically influenced by behavioral goals and task requirements.
  • Semantic processing and cognitive control systems exhibit complex functional integration.
  • The neural representation of sentence meaning is sensitive to how it will be used behaviorally.