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Related Concept Videos

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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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Related Experiment Video

Updated: May 14, 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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Correlation between prime duration and semantic priming effect: evidence from N400 effect.

B Liu1, G Wu, X Meng

  • 1School of Computer Science and Technology, Tianjin University, Tianjin 300072, PR China. liubaolin.china@gmail.com

Neuroscience
|February 19, 2013
PubMed
Summary

Even when unseen, visual primes speed up sound processing. This study shows that visual information primes sound categorization, demonstrating automatic semantic processing without conscious awareness.

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Published on: November 19, 2014

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Auditory Perception

Background:

  • The masked priming effect demonstrates that subliminal stimuli can influence cognitive processing.
  • The N400 component is a well-established electrophysiological marker of semantic processing and semantic incongruity detection.

Purpose of the Study:

  • To investigate if visual primes (pictures) can elicit the N400 semantic priming effect with auditory targets (sounds).
  • To examine the relationship between prime duration and the magnitude of the N400 effect.
  • To explore the role of automatic semantic processing in cross-modal priming.

Main Methods:

  • Utilized a masked priming paradigm with grayscale object pictures as primes and environmental sounds as targets.
  • Participants performed a sound classification task.
  • Varied prime-mask withdrawal intervals (16ms to 83ms) to assess priming effects.
  • Measured event-related potentials (ERPs), specifically focusing on the N400 component.

Main Results:

  • Congruent prime-target pairs showed facilitated sound processing compared to incongruent pairs.
  • Incongruent target sounds elicited a significant N400 effect across all tested prime durations.
  • The amplitude of the N400 effect increased with prime duration, approaching saturation.

Conclusions:

  • The N400 effect in this cross-modal paradigm suggests automatic semantic processing of visual information.
  • Conscious perception of the prime stimulus is not necessary for semantic priming to occur.
  • Early visual information exerts an accumulative priming effect on subsequent auditory target processing.