The Neural Basis of Body Form and Body Action Agnosia

Moro, Valentina; Urgesi, Cosimo; Pernigo, Simone; Lanteri, Paola; Pazzaglia, Mariella; Aglioti, Salvatore Maria

doi:10.1016/j.neuron.2008.09.022

Cited by 166 publications

(147 citation statements)

References 67 publications

(112 reference statements)

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“…Even if we matched objects carefully, considering all the diVerent characteristics of both mobile phones (number and position of keys, size and position of the display…) and shoes (style, shape…), it may be that the larger number of details still made objects easier to distinguish than body-parts, whose conWguration is more repetitive and diYcult to discriminate. However, the lack of self-facilitation for objects would further corroborate the notion that our body is a very particular type of "object," whose perception obeys diVerent rules pertaining to diVerent mechanisms with respect to inanimate objects (Downing et al 2001;Moro et al 2008;Peelen and Downing 2007).…”

Section: Discussionmentioning

confidence: 69%

Bodily self: an implicit knowledge of what is explicitly unknown

et al. 2011

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We tested the hypothesis that the body selfadvantage, i.e., the facilitation in discriminating self versus other people's body-eVectors, is the expression of an implicit and body-speciWc knowledge, based mainly on the sensorimotor representation of one's own body-eVectors. Alternatively, the body self-advantage could rely on visual recognition of pictorial cues. According to the Wrst hypothesis, using gray-scale pictures of body-parts, the body selfadvantage should emerge when self-body recognition is implicitly required and should be speciWc for body-eVectors and not for inanimate-objects. In contrast, if the self-advantage is due to a mere visual-perceptual facilitation, it should be independent of the implicit or explicit request (and could be extended also to objects). To disentangle these hypotheses, healthy participants were implicitly or explicitly required to recognize either their own body-eVectors or inanimate-objects. Participants were more accurate in the implicit task with self rather than with others' bodyeVectors. In contrast, the self-advantage was not found when an explicit recognition of one's own body-eVectors was required, suggesting that the body self-advantage relies upon a sensorimotor, rather than a mere visual representation of one's own body. Moreover, the absence of both self/ other and implicit/explicit eVects, when processing inanimate-objects, underlines the diVerences between the body and other objects.

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Section: Discussionmentioning

confidence: 69%

Bodily self: an implicit knowledge of what is explicitly unknown

et al. 2011

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“…EBA has been traditionally considered merely an early category-selective region for the visual processing of static images of the human body and not to pictures of other stimulus categories such as objects (e.g. a chair, a spoon) (Downing et al, 2001, Moro et al, 2008, Urgesi et al, 2004Peeen and Downing 2005). However many recent studies suggest EBA relation with more cognitive functions and frontal sensorimotor regions (Astafiev et al, 2004;Helmich et al, 2007;David et al, 2007).…”

Section: Two-route Model Of Body Processingmentioning

confidence: 99%

Extrastriate body area underlies aesthetic evaluation of body stimuli

et al. 2010

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link AbstractHumans appear to be the only animals to have developed the practice and culture of art. This practice presumably relies on special processing circuits within the human brain associated with a distinct subjective experience, termed aesthetic experience, and preferentially evoked by artistic stimuli. We assume that positive or negative aesthetic judgments are an important function of neuroaesthetic circuits. The localization of these circuits in the brain remains unclear, though neuroimaging studies have suggested several possible neural correlates of aesthetic preference. We applied repetitive transcranial magnetic stimulation (rTMS) over candidate brain areas to disrupt aesthetic processing while healthy volunteers made aesthetic preference judgments between pairs of dance postures, or control non-body stimuli. Based on evidence from visual body perception studies, we targeted the ventral premotor cortex (vPMC) and extrastriate body area (EBA), in the left and right hemispheres.rTMS over EBA reduced aesthetic sensitivity for body stimuli relative to rTMS over vPMC, while no such difference was found for non-body stimuli. We interpret our results within the framework of dual routes for visual body processing. rTMS over either EBA or vPMC reduced the contributions of the stimulated area to body processing, leaving processing more reliant on the unaffected route. Disruption of EBA reduces the local processing of the stimuli, and reduced observers' aesthetic sensitivity.Conversely, disruption of the global route via vPMC increased the relative contribution of the local route via EBA, and thus increased aesthetic sensitivity. In this way, we suggest a complementary contribution of both local and global routes to aesthetic processing.

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“…In particular, the right EBA is essential in discriminating morphological body details (Urgesi et al, 2004(Urgesi et al, , 2007aMoro et al, 2008), and its activity is influenced by the emotion expressed by the body (Peelen et al, 2007;Kret et al, 2011), suggesting a large-scale representation of the emotion expressed through the body.…”

Section: Introductionmentioning

confidence: 99%

Event-Related Repetitive Transcranial Magnetic Stimulation of Posterior Superior Temporal Sulcus Improves the Detection of Threatening Postural Changes in Human Bodies

Candidi¹,

Stienen²,

Aglioti³

et al. 2011

J. Neurosci.

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Perceiving others' emotions through their body movements and postures is crucial for successful social interaction. While imaging studies indicate that perceiving body emotions relies upon a wide network of subcortico-cortical neural regions, little is known on the causative role of different nodes of this network. We applied event-related repetitive transcranial magnetic stimulation (rTMS) over nonfacial, body-and action-related extrastriate (EBA), temporal (pSTS), and premotor (vPM) cortices to test their active contribution in perceiving changes between two successive images of either threatening or neutral human body or animal postures. While stimulation of EBA and vPM showed no selective effect on threatening stimuli with respect to neutral ones, rTMS over pSTS selectively impaired neutral posture detection and increased the accuracy in detecting changes of threatening human postures with respect to all other experimental conditions. No such effect was found for animal stimuli. These results support the notion that pSTS is crucially devoted to the detection of socially relevant information concerning others' actions, fostering the notion that amygdalo-temporo-cortical modulatory connections mediate perception of emotionally salient body postures.

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The Neural Basis of Body Form and Body Action Agnosia

Cited by 166 publications

References 67 publications

Bodily self: an implicit knowledge of what is explicitly unknown

Bodily self: an implicit knowledge of what is explicitly unknown

Extrastriate body area underlies aesthetic evaluation of body stimuli

Event-Related Repetitive Transcranial Magnetic Stimulation of Posterior Superior Temporal Sulcus Improves the Detection of Threatening Postural Changes in Human Bodies

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