Theta synchronization over occipito-temporal cortices during visual perception of body parts

Quentin Moreau, Enea F Pavone, Salvatore M Aglioti, Matteo Candidi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Categorical clustering in the visual system is thought to have evolved as a function of intrinsic (intra-areal) and extrinsic (interareal) connectivity and experience. In the visual system, the extrastriate body area (EBA), an occipito-temporal region, responds to full body and body part images under the organizational principle of their functional/semantic meaning. Although frequency-specific modulations of neural activity associated with perceptive and cognitive functions are increasingly attracting the interest of neurophysiologists and cognitive neuroscientists, perceiving single body parts with different functional meaning and full body images induces time-frequency modulations over occipito-temporal electrodes are yet to be described. Here, we studied this issue by measuring EEG in participants who passively observed fingers, hands, arms and faceless full body images with four control plant stimuli, each bearing hierarchical analogy with the body stimuli. We confirmed that occipito-temporal electrodes (compatible with the location of EBA) show a larger event-related potential (ERP, N190) for body-related images. Furthermore, we identified a body part-specific (i.e. selective for hands and arms) theta event-related synchronization increase under the same electrodes. This frequency modulation associated with the perception of body effectors over occipito-temporal cortices is in line with recent findings of categorical organization of neural responses to human effectors in the visual system.

Original languageEnglish
JournalEuropean Journal of Neuroscience
DOIs
Publication statusE-pub ahead of print - Nov 27 2017

Fingerprint

Visual Perception
Body Image
Temporal Lobe
Human Body
Electrodes
Arm
Hand
Evoked Potentials
Semantics
Cognition
Fingers
Cluster Analysis
Electroencephalography

Keywords

  • Journal Article

Cite this

Theta synchronization over occipito-temporal cortices during visual perception of body parts. / Moreau, Quentin; Pavone, Enea F; Aglioti, Salvatore M; Candidi, Matteo.

In: European Journal of Neuroscience, 27.11.2017.

Research output: Contribution to journalArticle

@article{d0c4370a50bf42068940afc0278b60d6,
title = "Theta synchronization over occipito-temporal cortices during visual perception of body parts",
abstract = "Categorical clustering in the visual system is thought to have evolved as a function of intrinsic (intra-areal) and extrinsic (interareal) connectivity and experience. In the visual system, the extrastriate body area (EBA), an occipito-temporal region, responds to full body and body part images under the organizational principle of their functional/semantic meaning. Although frequency-specific modulations of neural activity associated with perceptive and cognitive functions are increasingly attracting the interest of neurophysiologists and cognitive neuroscientists, perceiving single body parts with different functional meaning and full body images induces time-frequency modulations over occipito-temporal electrodes are yet to be described. Here, we studied this issue by measuring EEG in participants who passively observed fingers, hands, arms and faceless full body images with four control plant stimuli, each bearing hierarchical analogy with the body stimuli. We confirmed that occipito-temporal electrodes (compatible with the location of EBA) show a larger event-related potential (ERP, N190) for body-related images. Furthermore, we identified a body part-specific (i.e. selective for hands and arms) theta event-related synchronization increase under the same electrodes. This frequency modulation associated with the perception of body effectors over occipito-temporal cortices is in line with recent findings of categorical organization of neural responses to human effectors in the visual system.",
keywords = "Journal Article",
author = "Quentin Moreau and Pavone, {Enea F} and Aglioti, {Salvatore M} and Matteo Candidi",
note = "{\circledC} 2017 Federation of European Neuroscience Societies and John Wiley & Sons Ltd.",
year = "2017",
month = "11",
day = "27",
doi = "10.1111/ejn.13782",
language = "English",
journal = "European Journal of Neuroscience",
issn = "0953-816X",
publisher = "Wiley-Blackwell",

}

TY - JOUR

T1 - Theta synchronization over occipito-temporal cortices during visual perception of body parts

AU - Moreau, Quentin

AU - Pavone, Enea F

AU - Aglioti, Salvatore M

AU - Candidi, Matteo

N1 - © 2017 Federation of European Neuroscience Societies and John Wiley & Sons Ltd.

PY - 2017/11/27

Y1 - 2017/11/27

N2 - Categorical clustering in the visual system is thought to have evolved as a function of intrinsic (intra-areal) and extrinsic (interareal) connectivity and experience. In the visual system, the extrastriate body area (EBA), an occipito-temporal region, responds to full body and body part images under the organizational principle of their functional/semantic meaning. Although frequency-specific modulations of neural activity associated with perceptive and cognitive functions are increasingly attracting the interest of neurophysiologists and cognitive neuroscientists, perceiving single body parts with different functional meaning and full body images induces time-frequency modulations over occipito-temporal electrodes are yet to be described. Here, we studied this issue by measuring EEG in participants who passively observed fingers, hands, arms and faceless full body images with four control plant stimuli, each bearing hierarchical analogy with the body stimuli. We confirmed that occipito-temporal electrodes (compatible with the location of EBA) show a larger event-related potential (ERP, N190) for body-related images. Furthermore, we identified a body part-specific (i.e. selective for hands and arms) theta event-related synchronization increase under the same electrodes. This frequency modulation associated with the perception of body effectors over occipito-temporal cortices is in line with recent findings of categorical organization of neural responses to human effectors in the visual system.

AB - Categorical clustering in the visual system is thought to have evolved as a function of intrinsic (intra-areal) and extrinsic (interareal) connectivity and experience. In the visual system, the extrastriate body area (EBA), an occipito-temporal region, responds to full body and body part images under the organizational principle of their functional/semantic meaning. Although frequency-specific modulations of neural activity associated with perceptive and cognitive functions are increasingly attracting the interest of neurophysiologists and cognitive neuroscientists, perceiving single body parts with different functional meaning and full body images induces time-frequency modulations over occipito-temporal electrodes are yet to be described. Here, we studied this issue by measuring EEG in participants who passively observed fingers, hands, arms and faceless full body images with four control plant stimuli, each bearing hierarchical analogy with the body stimuli. We confirmed that occipito-temporal electrodes (compatible with the location of EBA) show a larger event-related potential (ERP, N190) for body-related images. Furthermore, we identified a body part-specific (i.e. selective for hands and arms) theta event-related synchronization increase under the same electrodes. This frequency modulation associated with the perception of body effectors over occipito-temporal cortices is in line with recent findings of categorical organization of neural responses to human effectors in the visual system.

KW - Journal Article

U2 - 10.1111/ejn.13782

DO - 10.1111/ejn.13782

M3 - Article

C2 - 29178557

JO - European Journal of Neuroscience

JF - European Journal of Neuroscience

SN - 0953-816X

ER -