Neural interactions in occipitotemporal cortex during basic human movement perception by dynamic causal modeling

Gu, Jianan; Liu, Baolin; Sun, Xiaofeng; Ma, Fangyuan; Li, Xianglin

doi:10.1007/s11682-019-00250-0

Cited by 2 publications

(3 citation statements)

References 55 publications

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“…Visual mechanisms for perception of body form and body motion mutually contribute to constructing the representation of bodily actions (Grossman and Blake 2002;Gu et al 2020), an interplay that is particularly emphasized during perception of point-light displays, where motion defines the body shape (Johansson 1973;Mather et al 1992;Neri et al 1998). The results reported here confirmed the basic coupling between the EBA and the bm-pSTS during human movement perception (Gu et al 2020). In addition, the results showed that the (bidirectional) functional coupling between body-form and body-motion processing areas increased for multiple face-to-face bodies, suggesting strong engagement of the action processing network.…”

Section: Discussionsupporting

confidence: 74%

“…Indeed, we found that spatial relations between two bodies affected the representation of body and bodily movements in the EBA and the bm-pSTS, and the neural coupling between them. In particular, perception of bodies acting and moving toward (vs. away from) each other increased the fMRI response, and the neural integration of information about body form and motion, which is fundamental for action representation (Grossman and Blake 2002;Gu et al 2020). The stronger neural response to facing (vs. non-facing) dyads in the EBA and bm-pSTS was accompanied by more accurate neural discrimination of the overall scenes featuring facing dyads, and of single body postures/movements in those scenes.…”

Section: Discussionmentioning

confidence: 99%

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Moving Toward versus Away from Another: How Body Motion Direction Changes the Representation of Bodies and Actions in the Visual Cortex

2021

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Representing multiple agents and their mutual relations is a prerequisite to understand social events such as interactions. Using functional magnetic resonance imaging on human adults, we show that visual areas dedicated to body form and body motion perception contribute to processing social events, by holding the representation of multiple moving bodies and encoding the spatial relations between them. In particular, seeing animations of human bodies facing and moving toward (vs. away from) each other increased neural activity in the body-selective cortex [extrastriate body area (EBA)] and posterior superior temporal sulcus (pSTS) for biological motion perception. In those areas, representation of body postures and movements, as well as of the overall scene, was more accurate for facing body (vs. nonfacing body) stimuli. Effective connectivity analysis with dynamic causal modeling revealed increased coupling between EBA and pSTS during perception of facing body stimuli. The perceptual enhancement of multiple-body scenes featuring cues of interaction (i.e., face-to-face positioning, spatial proximity, and approaching signals) was supported by the participants’ better performance in a recognition task with facing body versus nonfacing body stimuli. Thus, visuospatial cues of interaction in multiple-person scenarios affect the perceptual representation of body and body motion and, by promoting functional integration, streamline the process from body perception to action representation.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Moving Toward versus Away from Another: How Body Motion Direction Changes the Representation of Bodies and Actions in the Visual Cortex

2021

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“…In particular, it has been shown that images of face-to-face bodies increase the activity in the face-and body-selective visual cortex including the EBA and the fusiform areas for face and body perception (Abassi and Papeo 2020). Visual mechanisms for perception of body form and body motion mutually contribute to constructing the representation of bodily actions (Grossman and Blake 2002;Gu et al 2020), an interplay that is particularly emphasized during perception of point-light displays, where motion defines the body shape (Johansson 1973;Mather et al 1992;Neri et al 1998). The results reported here confirmed the basic coupling between the EBA and the bm-pSTS during human movement perception (Gu et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Moving toward versus away from another: how body motion direction changes the representation of bodies and actions in the visual cortex

Bellot¹,

Abassi²,

Papeo³

2020

Preprint

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Representing multiple agents and their mutual relations is a prerequisite to understand social events. Using functional MRI on human adults, we show that visual areas dedicated to body-form and body-motion perception contribute to processing social events, by holding the representation of multiple moving bodies and encoding the spatial relations between them. In particular, seeing animations of human bodies facing and moving toward (vs. away from) each other, increased neural activity in the body-selective cortex (extrastriate body area -EBA) and posterior superior temporal sulcus for biological-motion perception (bm-pSTS). In those areas, representation of body postures and movements, as well as of the overall scene, was more accurate for facing-body (vs. non-facing body) stimuli. Effective connectivity analysis with Dynamic Causal Modeling revealed increased coupling between EBA and bm-pSTS during perception of facing-body stimuli. The attunement of human vision to multiple-body scenes involving perceptual cues of interaction such as face-to-face positioning and approaching behaviour, was further supported by the participants’ better performance in a match-to-sample task with facing-body vs. non-facing body stimuli. Thus, visuo-spatial cues of interaction in multiple-person scenarios affect the perceptual representation of body and body motion and, by promoting functional integration, streamline the process from body perception to action representation.

show abstract

Neural interactions in occipitotemporal cortex during basic human movement perception by dynamic causal modeling

Cited by 2 publications

References 55 publications

Moving Toward versus Away from Another: How Body Motion Direction Changes the Representation of Bodies and Actions in the Visual Cortex

Moving Toward versus Away from Another: How Body Motion Direction Changes the Representation of Bodies and Actions in the Visual Cortex

Moving toward versus away from another: how body motion direction changes the representation of bodies and actions in the visual cortex

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