Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/207317
Title: Auditory predictions shape the neural responses to stimulus repetition and sensory change
Author: Cacciaglia, Raffaele
Costa Faidella, Jordi
Zarnowiec, Katarzyna
Grimm, Sabine
Escera i Micó, Carles
Keywords: Percepció auditiva
Psicoacústica
Imatges per ressonància magnètica
Neurologia
Estimulació del cervell
Auditory perception
Psychoacoustic
Magnetic resonance imaging
Neurology
Brain stimulation
Issue Date: 1-Feb-2019
Publisher: Elsevier B.V.
Abstract: Perception is a highly active process relying on the continuous formulation of predictive inferences using short-term sensory memory templates, which are recursively adjusted based on new input. According to this idea, earlier studies have shown that novel stimuli preceded by a higher number of repetitions yield greater novelty responses, indexed by larger mismatch negativity (MMN). However, it is not clear whether this MMN memory trace effect is driven by more adapted responses to prior stimulation or rather by a heightened processing of the unexpected deviant, and only few studies have so far attempted to characterize the functional neuroanatomy of these effects. Here we implemented a modified version of the auditory frequency oddball paradigm that enables modeling the responses to both repeated standard and deviant stimuli. Fifteen subjects underwent functional magnetic resonance imaging (fMRI) while their attention was diverted from auditory stimulation. We found that deviants with longer stimulus history of standard repetitions yielded a more robust and widespread activation in the bilateral auditory cortex. Standard tones repetition yielded a pattern of response entangling both suppression and enhancement effects depending on the predictability of upcoming stimuli. We also observed that regularity encoding and deviance detection mapped onto spatially segregated cortical subfields. Our data provide a better understanding of the neural representations underlying auditory repetition and deviance detection effects, and further support that perception operates through the principles of Bayesian predictive coding.
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.neuroimage.2018.11.007
It is part of: Neuroimage, 2019, vol. 186, p. 200-210
URI: http://hdl.handle.net/2445/207317
Related resource: https://doi.org/10.1016/j.neuroimage.2018.11.007
ISSN: 1053-8119
Appears in Collections:Articles publicats en revistes (Psicologia Clínica i Psicobiologia)

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