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• W3183104211 endingPage "26" @default.
• W3183104211 startingPage "21" @default.
• W3183104211 abstract "Statistical learning allows comprehension of structured information, such as that in language and music. The brain computes a sequence's transition probability and predicts future states to minimise sensory reaction and derive entropy (uncertainty) from sequential information. Neurophysiological studies have revealed that early event-related neural responses (P1 and N1) reflect statistical learning − when the brain encodes transition probability in stimulus sequences, it predicts an upcoming stimulus with a high transition probability and suppresses the early event-related responses to a stimulus with a high transition probability. This amplitude difference between high and low transition probabilities reflects statistical learning effects. However, how a sequence's transition probability ratio affects neural responses contributing to statistical learning effects remains unknown. This study investigated how transition-probability ratios or conditional entropy (uncertainty) in auditory sequences modulate the early event-related neuromagnetic responses of P1m and N1m. Sequence uncertainties were manipulated using three different transition-probability ratios: 90:10%, 80:20%, and 67:33% (conditional entropy: 0.47, 0.72, and 0.92 bits, respectively). Neuromagnetic responses were recorded when participants listened to sequential sounds with these three transition probabilities. Amplitude differences between lower and higher probabilities were larger in sequences with transition-probability ratios of 90:10% and smaller in sequences with those of 67:33%, compared to sequences with those of 80:20%. This suggests that the transition-probability ratio finely tunes P1m and N1m. Our study also showed larger amplitude differences between frequent- and rare-transition stimuli in P1m than in N1m. This indicates that information about transition-probability differences may be calculated in earlier cognitive processes." @default.
• W3183104211 created "2021-07-19" @default.
• W3183104211 creator A5026786065 @default.
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• W3183104211 date "2021-10-01" @default.
• W3183104211 modified "2023-10-14" @default.
• W3183104211 title "Biomarkers of mental disorders: Psychophysiological measures as indicators of mechanisms, risk, and outcome prediction" @default.
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• W3183104211 doi "https://doi.org/10.1016/j.ijpsycho.2021.06.014" @default.
• W3183104211 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34364039" @default.
• W3183104211 hasPublicationYear "2021" @default.
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