Beyond extrastriate body area (EBA) and fusiform body area (FBA): context integration in the meaning of actions

Amoruso, Lucía; Couto, Blas; Ibáñez, Agustín

doi:10.3389/fnhum.2011.00124

Cited by 49 publications

(42 citation statements)

References 35 publications

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“…These findings suggest that, at least when considering actions embedded in naturalistic contextual settings, motor responses are prone to top-down modulations Liuzza, Candidi, Sforza, & Aglioti, 2015;Ubaldi et al, 2015). Our design does not allow us to determine whether pMTG and DLPFC are functionally connected and work together in building up priors to facilitate action recognition or are part of parallel distinct pathways (Amoruso, Couto, & Ibanez, 2011). Future studies using connectivity measures are clearly needed in order to disentangle the specific mechanisms subserving these processes.…”

Section: Discussionmentioning

confidence: 97%

Contextualizing action observation in the predictive brain: Causal contributions of prefrontal and middle temporal areas

2018

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Context facilitates the recognition of forthcoming actions by pointing to which intention is likely to drive them. This intention is thought to be estimated in a ventral pathway linking MTG with frontal regions and to further impact on the implementation of sensory predictions within the action observation network (AON). Additionally, when conflicting intentions are estimated from context, the DLPFC may bias action selection. However, direct evidence for the contribution of these areas to context-embedded action representations in the AON is still lacking. Here, we used a perturb-and-measure TMS-approach to disrupt neural activity, separately in MTG and DLPFC and subsequently measure cortico-spinal excitability while observing actions embedded in congruent, incongruent or ambiguous contexts. Context congruency was manipulated in terms of compatibility between observed kinematics and the action goal suggested by the ensemble of objects depicted in the environment. In the control session (vertex), we found an early facilitation and later inhibition for kinematics embedded in congruent and incongruent contexts, respectively. MTG stimulation altered the differential modulation of M1 response to congruent vs. incongruent contexts, suggesting this area specifies prior representations about appropriate object graspability. Interestingly, all effects were abolished after DLPFC stimulation highlighting its critical role in broader contextual modulation of the AON activity.

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Section: Discussionmentioning

confidence: 97%

Contextualizing action observation in the predictive brain: Causal contributions of prefrontal and middle temporal areas

2018

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“…In consonance with the aforementioned accounts, we propose a model for the N400 for actions where frontal areas (e.g., IFG) would update ongoing contextual information in working memory and integrate it with learned target-context associations stored in temporal regions (MTG, STS) in order to get the specific significance of an action event (Amoruso et al, 2011, 2012; Ibanez and Manes, 2012). In addition, the inferior parietal lobe, as a cross-modal area, would mediate the integration of sensory, motor, and conceptual information (Seghier, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…According to this view, meaning constitutes a polymodal, context-dependent, and constructive representation instantiated by the aforementioned distributed network (Amoruso et al, 2011, 2012; Ibanez and Manes, 2012). …”

Section: Discussionmentioning

confidence: 99%

N400 ERPs for actions: building meaning in context

Amoruso¹,

Gelormini²,

Aboitiz³

et al. 2013

Front. Hum. Neurosci.

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103

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Converging neuroscientific evidence suggests the existence of close links between language and sensorimotor cognition. Accordingly, during the comprehension of meaningful actions, our brain would recruit semantic-related operations similar to those associated with the processing of language information. Consistent with this view, electrophysiological findings show that the N400 component, traditionally linked to the semantic processing of linguistic material, can also be elicited by action-related material. This review outlines recent data from N400 studies that examine the understanding of action events. We focus on three specific domains, including everyday action comprehension, co-speech gesture integration, and the semantics involved in motor planning and execution. Based on the reviewed findings, we suggest that both negativities (the N400 and the action-N400) reflect a common neurocognitive mechanism involved in the construction of meaning through the expectancies created by previous experiences and current contextual information. To shed light on how this process is instantiated in the brain, a testable contextual fronto-temporo-parietal model is proposed.

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“…The set of hypothesis tested in the present study is based on the idea that the brain is a proactive organ that is constantly benefiting from prior experiences and current contextual information to make accurate predictions in anticipating the meaning of future events (Bar, 2007(Bar, , 2009Amoruso et al, 2011;Ibanez and Manes, 2012;Amoruso et al, 2013).…”

Section: Path Model Analysismentioning

confidence: 99%

Time to Tango: Expertise and contextual anticipation during action observation

et al. 2014

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Predictive theories of action observation propose that we use our own motor system as a guide for anticipating and understanding other people's actions through the generation of context-based expectations. According to this view, people should be better in predicting and interpreting those actions that are present in their own motor repertoire compared to those that are not. We recorded high-density event-related potentials (ERPs: P300, N400 and Slow Wave, SW) and source estimation in 80 subjects separated by their level of expertise (experts, beginners and naïves) as they observed realistic videos of Tango steps with different degrees of execution correctness. We also performed path analysis to infer causal relationships between ongoing anticipatory brain activity, evoked semantic responses, expertise measures and behavioral performance. We found that anticipatory activity, with sources in a fronto-parieto-occipital network, early discriminated between groups according to their level of expertise. Furthermore, this early activity significantly predicted subsequent semantic integration indexed by semantic responses (N400 and SW, sourced in temporal and motor regions) which also predicted motor expertise. In addition, motor expertise was a good predictor of behavioral performance. Our results show that neural and temporal dynamics underlying contextual action anticipation and comprehension can be interpreted in terms of successive levels of contextual prediction that are significantly modulated by subject's prior experience.

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Beyond extrastriate body area (EBA) and fusiform body area (FBA): context integration in the meaning of actions

Cited by 49 publications

References 35 publications

Contextualizing action observation in the predictive brain: Causal contributions of prefrontal and middle temporal areas

Contextualizing action observation in the predictive brain: Causal contributions of prefrontal and middle temporal areas

N400 ERPs for actions: building meaning in context

Time to Tango: Expertise and contextual anticipation during action observation

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