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Exploring the neural correlates of dream phenomenology and altered states of consciousness during sleep

Mutz, Julian, Javadi, Amir-Homayoun (2017) Exploring the neural correlates of dream phenomenology and altered states of consciousness during sleep. Neuroscience of Consciousness, 3 (1). ISSN 2057-2107. (doi:10.1093/nc/nix009) (KAR id:61937)

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Do people routinely pre-activate the meaning and even the phonological form of upcoming words? The most acclaimed evidence for phonological prediction comes from a 2005 Nature Neuroscience publication by DeLong, Urbach and Kutas, who observed a graded modulation of electrical brain potentials (N400) to nouns and preceding articles by the probability that people use a word to continue the sentence fragment (‘cloze’). In our direct replication study spanning 9 laboratories (N=334), pre-registered replication-analyses and exploratory Bayes factor analyses successfully replicated the noun-results but, crucially, not the article-results. Pre-registered single-trial analyses also yielded a statistically significant effect for the nouns but not the articles. Exploratory Bayesian single-trial analyses showed that the article-effect may be non-zero but is likely far smaller than originally reported and too small to observe without very large sample sizes. Our results do not support the view that readers routinely pre-activate the phonological form of predictable words.

Item Type: Article
DOI/Identification number: 10.1093/nc/nix009
Uncontrolled keywords: sleep and dreaming; consciousness; phenomenology; neuroscience; psychosis
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Divisions > Division of Human and Social Sciences > School of Psychology
Depositing User: Amir-Homayoun Javadi
Date Deposited: 05 Jun 2017 08:28 UTC
Last Modified: 16 Feb 2021 13:46 UTC
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