A1 Journal article (refereed)
Prior Precision Modulates the Minimization of Auditory Prediction Error (2019)

Hsu, Y.-F., Waszak, F., & Hämäläinen, J. (2019). Prior Precision Modulates the Minimization of Auditory Prediction Error. Frontiers in Human Neuroscience, 13, Article 30. https://doi.org/10.3389/fnhum.2019.00030

JYU authors or editors

Publication details

All authors or editors: Hsu, Yi-Fang; Waszak, Florian; Hämäläinen, Jarmo

Journal or series: Frontiers in Human Neuroscience

ISSN: 1662-5161

eISSN: 1662-5161

Publication year: 2019

Volume: 13

Issue number: 0

Article number: 30

Publisher: Frontiers Research Foundation

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.3389/fnhum.2019.00030

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/63194


The predictive coding model of perception proposes that successful representation of the perceptual world depends upon canceling out the discrepancy between prediction and sensory input (i.e., prediction error). Recent studies further suggest a distinction to be made between prediction error triggered by non-predicted stimuli of different prior precision (i.e., inverse variance). However, it is not fully understood how prediction error with different precision levels is minimized in the predictive process. Here, we conducted a magnetoencephalography (MEG) experiment which orthogonally manipulated prime-probe relation (for contextual precision) and stimulus repetition (for perceptual learning which decreases prediction error). We presented participants with cycles of tone quartets which consisted of three prime tones and one probe tone of randomly selected frequencies. Within each cycle, the three prime tones remained identical while the probe tones changed once at some point (e.g., from repetition of 123X to repetition of 123Y). Therefore, the repetition of probe tones can reveal the development of perceptual inferences in low and high precision contexts depending on their position within the cycle. We found that the two conditions resemble each other in terms of N1m modulation (as both were associated with N1m suppression) but differ in terms of N2m modulation. While repeated probe tones in low precision context did not exhibit any modulatory effect, repeated probe tones in high precision context elicited a suppression and rebound of the N2m source power. The differentiation suggested that the minimization of prediction error in low and high precision contexts likely involves distinct mechanisms.

Keywords: observation and perception; brain research; MEG; sense of hearing; stimuli (role related to effect); anticipation; repetition

Free keywords: predictive coding; prediction error; auditory perception; magnetoencephalagraphy (MEG); Cognitive Penetration; Coding Theory; Visual Cortex

Contributing organizations

Related projects

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 1

Last updated on 2023-03-10 at 13:42