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Predictive encoding of pure tones and FM-sweeps in the human auditory cortex
Expectations substantially influence perception, but the neural mechanisms underlying this influence are not fully understood. A prominent view is that sensory neurons encode prediction error with respect to expectations on upcoming sensory input. Although the encoding of prediction error has been p...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9764222/ https://www.ncbi.nlm.nih.gov/pubmed/36545253 http://dx.doi.org/10.1093/texcom/tgac047 |
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author | Stein, Jasmin von Kriegstein, Katharina Tabas, Alejandro |
author_facet | Stein, Jasmin von Kriegstein, Katharina Tabas, Alejandro |
author_sort | Stein, Jasmin |
collection | PubMed |
description | Expectations substantially influence perception, but the neural mechanisms underlying this influence are not fully understood. A prominent view is that sensory neurons encode prediction error with respect to expectations on upcoming sensory input. Although the encoding of prediction error has been previously demonstrated in the human auditory cortex (AC), previous studies often induced expectations using stimulus repetition, potentially confounding prediction error with neural habituation. These studies also measured AC as a single population, failing to consider possible predictive specializations of different AC fields. Moreover, the few studies that considered prediction error to stimuli other than pure tones yielded conflicting results. Here, we used functional magnetic resonance imaging (fMRI) to systematically investigate prediction error to subjective expectations in auditory cortical fields Te1.0, Te1.1, Te1.2, and Te3, and two types of stimuli: pure tones and frequency modulated (FM) sweeps. Our results show that prediction error is elicited with respect to the participants’ expectations independently of stimulus repetition and similarly expressed across auditory fields. Moreover, despite the radically different strategies underlying the decoding of pure tones and FM-sweeps, both stimulus modalities were encoded as prediction error in most fields of AC. Altogether, our results provide unequivocal evidence that predictive coding is the general encoding mechanism in AC. |
format | Online Article Text |
id | pubmed-9764222 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-97642222022-12-20 Predictive encoding of pure tones and FM-sweeps in the human auditory cortex Stein, Jasmin von Kriegstein, Katharina Tabas, Alejandro Cereb Cortex Commun Original Article Expectations substantially influence perception, but the neural mechanisms underlying this influence are not fully understood. A prominent view is that sensory neurons encode prediction error with respect to expectations on upcoming sensory input. Although the encoding of prediction error has been previously demonstrated in the human auditory cortex (AC), previous studies often induced expectations using stimulus repetition, potentially confounding prediction error with neural habituation. These studies also measured AC as a single population, failing to consider possible predictive specializations of different AC fields. Moreover, the few studies that considered prediction error to stimuli other than pure tones yielded conflicting results. Here, we used functional magnetic resonance imaging (fMRI) to systematically investigate prediction error to subjective expectations in auditory cortical fields Te1.0, Te1.1, Te1.2, and Te3, and two types of stimuli: pure tones and frequency modulated (FM) sweeps. Our results show that prediction error is elicited with respect to the participants’ expectations independently of stimulus repetition and similarly expressed across auditory fields. Moreover, despite the radically different strategies underlying the decoding of pure tones and FM-sweeps, both stimulus modalities were encoded as prediction error in most fields of AC. Altogether, our results provide unequivocal evidence that predictive coding is the general encoding mechanism in AC. Oxford University Press 2022-11-16 /pmc/articles/PMC9764222/ /pubmed/36545253 http://dx.doi.org/10.1093/texcom/tgac047 Text en © The Author(s) 2022. Published by Oxford University Press. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Stein, Jasmin von Kriegstein, Katharina Tabas, Alejandro Predictive encoding of pure tones and FM-sweeps in the human auditory cortex |
title | Predictive encoding of pure tones and FM-sweeps in the human auditory cortex |
title_full | Predictive encoding of pure tones and FM-sweeps in the human auditory cortex |
title_fullStr | Predictive encoding of pure tones and FM-sweeps in the human auditory cortex |
title_full_unstemmed | Predictive encoding of pure tones and FM-sweeps in the human auditory cortex |
title_short | Predictive encoding of pure tones and FM-sweeps in the human auditory cortex |
title_sort | predictive encoding of pure tones and fm-sweeps in the human auditory cortex |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9764222/ https://www.ncbi.nlm.nih.gov/pubmed/36545253 http://dx.doi.org/10.1093/texcom/tgac047 |
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