Suppression of Sensorimotor Alpha Power Associated With Pain Expressed by an Avatar: A Preliminary EEG Study

Joyal, Christian C.; Neveu, Sarah-Michelle; Boukhalfi, Tarik; Jackson, Philip L.; Renaud, Patrice

doi:10.3389/fnhum.2018.00273

Cited by 20 publications

(11 citation statements)

References 55 publications

(100 reference statements)

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“…As this decrease was mainly detected in central electrodes, overlapping with somatosensory regions, we hypothesize that for NOX conditions, subjects had the intention to move their limbs away from the very intense stimulus, which potentially resulted in a motor imagery movement 41 , 42 , and led to a clear ERD pattern similar to the one widely used in brain–computer interfaces. Overall, our results concur with most previous studies investigating the relationship between EEG-alpha power and noxious stimuli 16 , 43 , as well as further extend upon these studies by analyzing five distinct thermal conditions. In another study 16 where only two conditions (cold and cool water) were investigated, Backonja et al reported an initial decrease in alpha power in the first minute post-stimulus, which was thereafter followed by an alpha power increase in bilateral frontal and posterior electrodes.…”

Section: Discussionsupporting

confidence: 92%

Distinct spatio-temporal and spectral brain patterns for different thermal stimuli perception

Tayeb

Dragomir

Lee

et al. 2022

Sci Rep

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Understanding the human brain’s perception of different thermal sensations has sparked the interest of many neuroscientists. The identification of distinct brain patterns when processing thermal stimuli has several clinical applications, such as phantom-limb pain prediction, as well as increasing the sense of embodiment when interacting with neurorehabilitation devices. Notwithstanding the remarkable number of studies that have touched upon this research topic, understanding how the human brain processes different thermal stimuli has remained elusive. More importantly, very intense thermal stimuli perception dynamics, their related cortical activations, as well as their decoding using effective features are still not fully understood. In this study, using electroencephalography (EEG) recorded from three healthy human subjects, we identified spatial, temporal, and spectral patterns of brain responses to different thermal stimulations ranging from extremely cold and hot stimuli (very intense), moderately cold and hot stimuli (intense), to a warm stimulus (innocuous). Our results show that very intense thermal stimuli elicit a decrease in alpha power compared to intense and innocuous stimulations. Spatio-temporal analysis reveals that in the first 400 ms post-stimulus, brain activity increases in the prefrontal and central brain areas for very intense stimulations, whereas for intense stimulation, high activity of the parietal area was observed post-500 ms. Based on these identified EEG patterns, we successfully classified the different thermal stimulations with an average test accuracy of 84% across all subjects. En route to understanding the underlying cortical activity, we source localized the EEG signal for each of the five thermal stimuli conditions. Our findings reveal that very intense stimuli were anticipated and induced early activation (before 400 ms) of the anterior cingulate cortex (ACC). Moreover, activation of the pre-frontal cortex, somatosensory, central, and parietal areas, was observed in the first 400 ms post-stimulation for very intense conditions and starting 500 ms post-stimuli for intense conditions. Overall, despite the small sample size, this work presents novel findings and a first comprehensive approach to explore, analyze, and classify EEG-brain activity changes evoked by five different thermal stimuli, which could lead to a better understanding of thermal stimuli processing in the brain and could, therefore, pave the way for developing a real-time withdrawal reaction system when interacting with prosthetic limbs. We underpin this last point by benchmarking our EEG results with a demonstration of a real-time withdrawal reaction of a robotic prosthesis using a human-like artificial skin.

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Section: Discussionsupporting

confidence: 92%

Distinct spatio-temporal and spectral brain patterns for different thermal stimuli perception

Tayeb

Dragomir

Lee

et al. 2022

Sci Rep

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“…They found that disordered gamers experienced left-brain hyper-activations while reflecting with their avatar which correlated with their disordered gaming behaviors. Highlighting also the connection between an individual’s physiological responses to avatars’ experiences, Joyal and colleagues (2018) assessed 24 adults combining quantitative electroencephalography (qEEG) and psychometric assessment. They observed that the pain experienced by an avatar prompted sensorimotor alpha wave suppression (SAS) in cortical areas, as in real life.…”

Section: The Cyber-developmental Framework: a Dialectical Discourse B...mentioning

confidence: 99%

Risks and Opportunities for Youth in the Digital Era

Stavropoulos

Motti‐Stefanidi

Griffiths

2022

European Psychologist

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Abstract. Due to continued groundbreaking digital advancements, Internet use has increased significantly. This has led to a heated debate in relation to weighing the many advantages of the technology against its potentially deleterious effects. To address such questions, experts converge on the need for greater knowledge around the way individual differences, partly shaped by an individual’s unique experiences of engaging with the medium, and partly by other real-life experiences, lead to different developmental trajectories. Consequently, the goals of the present review are to (i) broadly describe differences in digital media applications, users, and usage; (ii) introduce the Cyber-Developmental Framework (CDF), as an overarching framework for understanding individual differences in adaptive and maladaptive digital media use among youth; (iii) delineate the cyber-component of this framework in relation to users’ experience of the digital context, their activity within it, as well as their digital self-presence, which may have an impact on their digital media use; and (iv) summarize priorities and future directions through the lens of this CDF. Within this context, this review particularly emphasizes the effect of digital media use on youth’s psychological well-being. It is argued that the trajectory youth will follow in their use of the Internet is a function of the interplay between their characteristics, their proximate and distal contexts, and the particular features of the digital application(s) that the individual is engaged in. The review points to the need to conduct research focusing on better understanding the developmental and digital-context-related influences on youth’s trajectories of Internet use.

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“…In this case, the outcome of the recipient would be hard to pair with different intentions. As to simulating human actions with computer-animated agents, this method can strictly control for confounding factors, and has largely been documented to induce the perception of animacy, agency, intent, social interaction, etc., even at the very beginning of our development (Castelli et al, 2000; Csibra et al, 2003; Hamlin et al, 2007; Joyal et al, 2018). Though the perceived social information for computer-animated agents is reduced (Gobbini et al, 2011), if compared to actions recorded from real humans, it never disappears, and social evaluations for the computer-animated stimuli (e.g., moral judgement) show almost the same patterns as the human-generated stimuli (Chaminade et al, 2007; Mar et al, 2007; Hamlin, 2013).…”

Section: Introductionmentioning

confidence: 93%

Outcome-Based Evaluations of Social Interaction Valence in a Contingent Response Context

Yin

Yang

et al. 2019

Front. Psychol.

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Previous studies have indicated that social evaluations rely heavily on the outcome of an actor's behavior toward a recipient. These studies focused on interactions in which two agents are connected by an external goal (i.e., object-mediated social interaction) and revealed that the intent behind an action has a privileged role in evaluating the valence of a social interaction. The current study investigated whether the intent behind an action influences evaluation of contingent social interactions wherein one agent responds to another without referring to a specific target. To clarify this, we operationalized intent as harmful or harmless when one agent hit another (i.e., recipient), and manipulated the action's outcome by determining to what extent it changed the recipient's state (i.e., falling down or moving slightly). Results showed that in contingent interactions with both direct launching (i.e., the actor directly caused the change) and extended launching (i.e., the actor caused the change through a mediated block), when the action significantly affected the recipient, the agents were evaluated as having a more negative social interaction than when the influence was small; this effect was independent of the intent behind the action. Such findings demonstrated that evaluations of contingent social interactions are primarily influenced by an actor's causal role in the outcome, not the intent behind an action. This null effect of intent when evaluating social interaction contrasts with findings on object-mediated social interaction, which is consistent with human social evaluations relying on two dissociable systems: causal and intentional components.

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Suppression of Sensorimotor Alpha Power Associated With Pain Expressed by an Avatar: A Preliminary EEG Study

Cited by 20 publications

References 55 publications

Distinct spatio-temporal and spectral brain patterns for different thermal stimuli perception

Distinct spatio-temporal and spectral brain patterns for different thermal stimuli perception

Risks and Opportunities for Youth in the Digital Era

Outcome-Based Evaluations of Social Interaction Valence in a Contingent Response Context

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