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Modelling the N400 brain potential as change in a probabilistic representation of meaning

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Listed:
  • Milena Rabovsky

    (Stanford University)

  • Steven S. Hansen

    (Stanford University)

  • James L. McClelland

    (Stanford University)

Abstract

The N400 component of the event-related brain potential has aroused much interest because it is thought to provide an online measure of meaning processing in the brain. However, the underlying process remains incompletely understood and actively debated. Here we present a computationally explicit account of this process and the emerging representation of sentence meaning. We simulate N400 amplitudes as the change induced by an incoming stimulus in an implicit and probabilistic representation of meaning captured by the hidden unit activation pattern in a neural network model of sentence comprehension, and we propose that the process underlying the N400 also drives implicit learning in the network. The model provides a unified account of 16 distinct findings from the N400 literature and connects human language comprehension with recent deep learning approaches to language processing.

Suggested Citation

  • Milena Rabovsky & Steven S. Hansen & James L. McClelland, 2018. "Modelling the N400 brain potential as change in a probabilistic representation of meaning," Nature Human Behaviour, Nature, vol. 2(9), pages 693-705, September.
  • Handle: RePEc:nat:nathum:v:2:y:2018:i:9:d:10.1038_s41562-018-0406-4
    DOI: 10.1038/s41562-018-0406-4
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    Cited by:

    1. Thomas P. Reber & Sina Mackay & Marcel Bausch & Marcel S. Kehl & Valeri Borger & Rainer Surges & Florian Mormann, 2023. "Single-neuron mechanisms of neural adaptation in the human temporal lobe," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Daniel S Kluger & Nico Broers & Marlen A Roehe & Moritz F Wurm & Niko A Busch & Ricarda I Schubotz, 2020. "Exploitation of local and global information in predictive processing," PLOS ONE, Public Library of Science, vol. 15(4), pages 1-17, April.

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