Once you feel it, you see it

Insula and sensory-motor contribution to visual awareness for fearful bodies in parietal extinction

M. Tamietto, F. Cauda, A. Celeghin, M. Diano, T. Costa, F.M. Cossa, K Sacco, S. Duca, G. Germiniani, B. de Gelder

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The interplay between the neural mechanisms of visual awareness and those involved in emotion processing and the mapping of related somatic changes remains unclear. To address this issue we studied one patient with visual extinction following right parietal damage, in a combined behavioral, psychophysiological and neuroimaging experiment. Patient M.P. was presented with neutral and fearful bodily expressions, either unilaterally in the left (LVF) or right visual field (RVF), or in both visual fields simultaneously. Fearful expressions presented in the left visual field simultaneously with neutral bodies in the RVF were detected more often than left-side neutral bodies. Signal detection analysis showed that the preferential access of fearful bodies to visual awareness is related to higher perceptual sensitivity for these stimuli during attentional competition. Pupil dilation, which indexes autonomic arousal, increased for fearful more than for neutral bodies. Moreover, dilation for extinguished fearful bodies was bigger than for consciously perceived fearful bodies. This decoupling between (increased) arousal and (lack of) conscious visual experience argues against a direct relationship between visual awareness of emotional signals and peripheral changes. Neuroimaging results showed that fearful bodies activated the left amygdala and extrastriate cortex when consciously perceived as well as when extinguished. Critically, however, conscious perception of fearful bodies was uniquely associated with activity in the anterior insula, somatosensory, motor and premotor cortex (PMC), and the cerebellum. This suggests that the integration between peripheral arousal and the moment-to-moment mapping at the central neural level of these bodily changes is critical for the conscious visual experience of emotional signals.
Keywords: Visual awareness; Emotion perception; Attention; Visual extinction; Interoception
Original languageEnglish
Pages (from-to)56-72
JournalCortex
Volume62
DOIs
Publication statusPublished - 2014

Fingerprint

Visual Fields
Motor Cortex
Neuroimaging
Dilatation
Visual Cortex
Psychological Extinction

Cite this

Tamietto, M. ; Cauda, F. ; Celeghin, A. ; Diano, M. ; Costa, T. ; Cossa, F.M. ; Sacco, K ; Duca, S. ; Germiniani, G. ; de Gelder, B. / Once you feel it, you see it : Insula and sensory-motor contribution to visual awareness for fearful bodies in parietal extinction. In: Cortex. 2014 ; Vol. 62. pp. 56-72.
@article{f335ae67bfe24c8580999063d6715947,
title = "Once you feel it, you see it: Insula and sensory-motor contribution to visual awareness for fearful bodies in parietal extinction",
abstract = "The interplay between the neural mechanisms of visual awareness and those involved in emotion processing and the mapping of related somatic changes remains unclear. To address this issue we studied one patient with visual extinction following right parietal damage, in a combined behavioral, psychophysiological and neuroimaging experiment. Patient M.P. was presented with neutral and fearful bodily expressions, either unilaterally in the left (LVF) or right visual field (RVF), or in both visual fields simultaneously. Fearful expressions presented in the left visual field simultaneously with neutral bodies in the RVF were detected more often than left-side neutral bodies. Signal detection analysis showed that the preferential access of fearful bodies to visual awareness is related to higher perceptual sensitivity for these stimuli during attentional competition. Pupil dilation, which indexes autonomic arousal, increased for fearful more than for neutral bodies. Moreover, dilation for extinguished fearful bodies was bigger than for consciously perceived fearful bodies. This decoupling between (increased) arousal and (lack of) conscious visual experience argues against a direct relationship between visual awareness of emotional signals and peripheral changes. Neuroimaging results showed that fearful bodies activated the left amygdala and extrastriate cortex when consciously perceived as well as when extinguished. Critically, however, conscious perception of fearful bodies was uniquely associated with activity in the anterior insula, somatosensory, motor and premotor cortex (PMC), and the cerebellum. This suggests that the integration between peripheral arousal and the moment-to-moment mapping at the central neural level of these bodily changes is critical for the conscious visual experience of emotional signals.Keywords: Visual awareness; Emotion perception; Attention; Visual extinction; Interoception",
author = "M. Tamietto and F. Cauda and A. Celeghin and M. Diano and T. Costa and F.M. Cossa and K Sacco and S. Duca and G. Germiniani and {de Gelder}, B.",
year = "2014",
doi = "10.1016/j.cortex.2014.10.009",
language = "English",
volume = "62",
pages = "56--72",
journal = "Cortex",
issn = "0010-9452",
publisher = "ELSEVIER MASSON, CORPORATION OFFICE",

}

Once you feel it, you see it : Insula and sensory-motor contribution to visual awareness for fearful bodies in parietal extinction. / Tamietto, M.; Cauda, F.; Celeghin, A.; Diano, M.; Costa, T.; Cossa, F.M.; Sacco, K; Duca, S.; Germiniani, G.; de Gelder, B.

In: Cortex, Vol. 62, 2014, p. 56-72.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Once you feel it, you see it

T2 - Insula and sensory-motor contribution to visual awareness for fearful bodies in parietal extinction

AU - Tamietto, M.

AU - Cauda, F.

AU - Celeghin, A.

AU - Diano, M.

AU - Costa, T.

AU - Cossa, F.M.

AU - Sacco, K

AU - Duca, S.

AU - Germiniani, G.

AU - de Gelder, B.

PY - 2014

Y1 - 2014

N2 - The interplay between the neural mechanisms of visual awareness and those involved in emotion processing and the mapping of related somatic changes remains unclear. To address this issue we studied one patient with visual extinction following right parietal damage, in a combined behavioral, psychophysiological and neuroimaging experiment. Patient M.P. was presented with neutral and fearful bodily expressions, either unilaterally in the left (LVF) or right visual field (RVF), or in both visual fields simultaneously. Fearful expressions presented in the left visual field simultaneously with neutral bodies in the RVF were detected more often than left-side neutral bodies. Signal detection analysis showed that the preferential access of fearful bodies to visual awareness is related to higher perceptual sensitivity for these stimuli during attentional competition. Pupil dilation, which indexes autonomic arousal, increased for fearful more than for neutral bodies. Moreover, dilation for extinguished fearful bodies was bigger than for consciously perceived fearful bodies. This decoupling between (increased) arousal and (lack of) conscious visual experience argues against a direct relationship between visual awareness of emotional signals and peripheral changes. Neuroimaging results showed that fearful bodies activated the left amygdala and extrastriate cortex when consciously perceived as well as when extinguished. Critically, however, conscious perception of fearful bodies was uniquely associated with activity in the anterior insula, somatosensory, motor and premotor cortex (PMC), and the cerebellum. This suggests that the integration between peripheral arousal and the moment-to-moment mapping at the central neural level of these bodily changes is critical for the conscious visual experience of emotional signals.Keywords: Visual awareness; Emotion perception; Attention; Visual extinction; Interoception

AB - The interplay between the neural mechanisms of visual awareness and those involved in emotion processing and the mapping of related somatic changes remains unclear. To address this issue we studied one patient with visual extinction following right parietal damage, in a combined behavioral, psychophysiological and neuroimaging experiment. Patient M.P. was presented with neutral and fearful bodily expressions, either unilaterally in the left (LVF) or right visual field (RVF), or in both visual fields simultaneously. Fearful expressions presented in the left visual field simultaneously with neutral bodies in the RVF were detected more often than left-side neutral bodies. Signal detection analysis showed that the preferential access of fearful bodies to visual awareness is related to higher perceptual sensitivity for these stimuli during attentional competition. Pupil dilation, which indexes autonomic arousal, increased for fearful more than for neutral bodies. Moreover, dilation for extinguished fearful bodies was bigger than for consciously perceived fearful bodies. This decoupling between (increased) arousal and (lack of) conscious visual experience argues against a direct relationship between visual awareness of emotional signals and peripheral changes. Neuroimaging results showed that fearful bodies activated the left amygdala and extrastriate cortex when consciously perceived as well as when extinguished. Critically, however, conscious perception of fearful bodies was uniquely associated with activity in the anterior insula, somatosensory, motor and premotor cortex (PMC), and the cerebellum. This suggests that the integration between peripheral arousal and the moment-to-moment mapping at the central neural level of these bodily changes is critical for the conscious visual experience of emotional signals.Keywords: Visual awareness; Emotion perception; Attention; Visual extinction; Interoception

U2 - 10.1016/j.cortex.2014.10.009

DO - 10.1016/j.cortex.2014.10.009

M3 - Article

VL - 62

SP - 56

EP - 72

JO - Cortex

JF - Cortex

SN - 0010-9452

ER -