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Evidence for embodied predictive coding: the anterior insula coordinates cortical processing of tactile deviancy

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Evidence for embodied predictive coding: the anterior insula coordinates cortical processing of tactile deviancy. / Allen, Micah; Fardo, Francesca; Dietz, Martin; Hillebrandt, Hauke; Rees, Geraint; Roepstorff, Andreas.

In: PeerJ, 01.07.2015.

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@article{43608cfd888d402ea034705da8d13e7e,
title = "Evidence for embodied predictive coding: the anterior insula coordinates cortical processing of tactile deviancy",
abstract = "Embodied awareness is the pervasive, multimodal self-awareness that is thought to form the foundation of emotion. This awareness was recently proposed to rely on the anterior insular cortex (AIC) comparing expected and actual bodily signals arising in prefrontal and sensory cortices. To investigate this possibility in the somatosensory domain, we measured brain activity using functional magnetic resonance imaging while healthy participants discriminated tactile stimuli in a roving oddball design. Dynamic Causal Modelling revealed that unexpected stimuli increased the strength of forward connections in a caudal to rostral ascending hierarchy from thalamic and somatosensory regions towards insula, cingulate and prefrontal cortices, consistent with hierarchical predictive coding. Within this feed-forward flow of neural coupling, the AIC increased both forwards and backwards connections with prefrontal and somatosensory cortex, supporting a comparator role. Further, we found that greater prefrontal to AIC connectivity predicted subjective ratings of stimulus discrimination difficulty. These results are interpreted in light of embodied predictive coding, suggesting that the AIC coordinates global cortical processing of tactile changes to support body awareness.",
author = "Micah Allen and Francesca Fardo and Martin Dietz and Hauke Hillebrandt and Geraint Rees and Andreas Roepstorff",
year = "2015",
month = jul,
day = "1",
doi = "10.7287/peerj.preprints.1203v1",
language = "English",
journal = "PeerJ",
issn = "2167-8359",
publisher = "PeerJ",

}

RIS

TY - JOUR

T1 - Evidence for embodied predictive coding: the anterior insula coordinates cortical processing of tactile deviancy

AU - Allen, Micah

AU - Fardo, Francesca

AU - Dietz, Martin

AU - Hillebrandt, Hauke

AU - Rees, Geraint

AU - Roepstorff, Andreas

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Embodied awareness is the pervasive, multimodal self-awareness that is thought to form the foundation of emotion. This awareness was recently proposed to rely on the anterior insular cortex (AIC) comparing expected and actual bodily signals arising in prefrontal and sensory cortices. To investigate this possibility in the somatosensory domain, we measured brain activity using functional magnetic resonance imaging while healthy participants discriminated tactile stimuli in a roving oddball design. Dynamic Causal Modelling revealed that unexpected stimuli increased the strength of forward connections in a caudal to rostral ascending hierarchy from thalamic and somatosensory regions towards insula, cingulate and prefrontal cortices, consistent with hierarchical predictive coding. Within this feed-forward flow of neural coupling, the AIC increased both forwards and backwards connections with prefrontal and somatosensory cortex, supporting a comparator role. Further, we found that greater prefrontal to AIC connectivity predicted subjective ratings of stimulus discrimination difficulty. These results are interpreted in light of embodied predictive coding, suggesting that the AIC coordinates global cortical processing of tactile changes to support body awareness.

AB - Embodied awareness is the pervasive, multimodal self-awareness that is thought to form the foundation of emotion. This awareness was recently proposed to rely on the anterior insular cortex (AIC) comparing expected and actual bodily signals arising in prefrontal and sensory cortices. To investigate this possibility in the somatosensory domain, we measured brain activity using functional magnetic resonance imaging while healthy participants discriminated tactile stimuli in a roving oddball design. Dynamic Causal Modelling revealed that unexpected stimuli increased the strength of forward connections in a caudal to rostral ascending hierarchy from thalamic and somatosensory regions towards insula, cingulate and prefrontal cortices, consistent with hierarchical predictive coding. Within this feed-forward flow of neural coupling, the AIC increased both forwards and backwards connections with prefrontal and somatosensory cortex, supporting a comparator role. Further, we found that greater prefrontal to AIC connectivity predicted subjective ratings of stimulus discrimination difficulty. These results are interpreted in light of embodied predictive coding, suggesting that the AIC coordinates global cortical processing of tactile changes to support body awareness.

U2 - 10.7287/peerj.preprints.1203v1

DO - 10.7287/peerj.preprints.1203v1

M3 - Journal article

JO - PeerJ

JF - PeerJ

SN - 2167-8359

ER -