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Updated: May 13, 2026

Investigating the Effects of Antipsychotics and Schizotypy on the N400 Using Event-Related Potentials and Semantic Categorization
Published on: November 19, 2014
N400 ERPs for actions: building meaning in context.
Lucía Amoruso1, Carlos Gelormini, Francisco Aboitiz
1Laboratory of Experimental Psychology and Neuroscience, Institute of Cognitive Neurology, Favaloro University Buenos Aires, Argentina ; Institute of Neuroscience, Favaloro University Buenos Aires, Argentina ; National Scientific and Technical Research Council Buenos Aires, Argentina.
The N400 brainwave, typically linked to language, also responds to understanding actions. This suggests a shared neural mechanism for meaning construction across language and sensorimotor cognition.
Area of Science:
- Neuroscience
- Cognitive Science
- Psycholinguistics
Background:
- Neuroscientific evidence indicates strong connections between language processing and sensorimotor cognition.
- The N400 component, a well-established electrophysiological marker for semantic processing in language, has also been observed in response to action-related stimuli.
Purpose of the Study:
- To review recent N400 studies investigating the comprehension of action events.
- To explore the role of N400 in everyday action understanding, co-speech gesture integration, and motor planning/execution semantics.
Main Methods:
- Electrophysiological N400 studies.
- Review of research on action event comprehension, gesture integration, and motor semantics.
Main Results:
- The N400 component can be elicited by action-related material, similar to linguistic material.
- Findings suggest a common neurocognitive mechanism underlying the N400 and action-N400, related to meaning construction via expectancies.
Conclusions:
- Both N400 and action-N400 reflect a shared mechanism for building meaning based on context and experience.
- A contextual fronto-temporo-parietal model is proposed to explain the neural instantiation of this process.
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