Personne :
Coll, Michel-Pierre

Photo de profil
Adresse électronique
Date de naissance
Projets de recherche
Structures organisationnelles
Fonction
Nom de famille
Coll
Prénom
Michel-Pierre
Affiliation
Université Laval. École de psychologie
ISNI
ORCID
Identifiant Canadiana
ncf13704901
person.page.name

Filtres

2011 - 20179
9
9
81
Réinitialiser les filtres

Paramètres

Résultats de recherche

Voici les éléments 1 - 9 sur 9
  • Publication
    Restreint
    Repeated exposure to others' pain reduces vicarious pain intensity estimation
    (2016) Grégoire, Mathieu; Coll, Michel-Pierre; B. Tremblay, Marie-Pier; Prkachin, K. M.; Jackson, Philip L.
  • Publication
    Restreint
    Repeated exposure to vicarious pain alters electrocortical processing of pain expressions
    (Springer, 2016-05-07) Jackson, Philip L.; Coll, Michel-Pierre; Prkachin, Kenneth M.; Grégoire, Mathieu
    Repeated exposure to others in pain has been shown to bias vicarious pain perception, but the neural correlates of this effect are currently not known. The current study therefore aimed at measuring electrocortical responses to facial expressions of pain following exposure to expressions of pain. To this end, a between-subject design was adopted. Participants in the Exposure group were exposed to facial expressions of intense pain, while the participants in the Control group were exposed to neutral expressions before performing the same pain detection task. As in previous studies, participants in the Exposure group showed a significantly more conservative bias when judging facial expressions pain, meaning that they were less inclined to judge moderate pain expressions as painful compared to participants in the Control group. Event-related potential analyses in response to pain or neutral expressions indicated that this effect was related to a relative decrease in the central late positive potential responses to pain expressions. Furthermore, while the early N170 response was not influenced by repeated exposure to pain expressions, the P100 component showed an adaptation effect in the Control group only. These results suggest that repeated exposure to vicarious pain do not influence early event-related potential responses to pain expressions but decreases the late central positive potential. These results are discussed in terms of changes in the perceived saliency of pain expressions following repeated exposure.
  • Publication
    Restreint
    The role of gender in the interaction between self-pain and the perception of pain in others
    (Elsevier, 2012-07-01) Jackson, Philip L.; Budell, Lesley; Coll, Michel-Pierre; Rainville, Pierre; Decety, Jean
    While self-pain motivates protective behaviors and self-oriented feelings, the perception of others' pain often motivates concern and prosocial behaviors toward the person suffering. The conflicting consequences of these 2 states raise the question of how pain is perceived in others when one is actually in pain. Two conflicting hypotheses could predict the interaction between these 2 signals: the threat value of pain hypothesis and the shared-representation model of pain empathy. Here, we asked 33 healthy volunteers exposed to acute experimental pain to judge the intensity of the pain felt by models expressing different levels of pain in video clips. Results showed that compared to a control warm stimulus, a stimulus causing self-pain increased the perception of others' pain for clips depicting male pain expressions but decreased the perceived intensity of female high pain expressions in both male and female participants. These results show that one's own pain state influences the perception of pain in others and that the gender of the person observed influences this interaction. Perspective : By documenting the effects of self-pain on pain perception in others, this study provides a better understanding of the shared mechanisms between self-pain and others' pain processing. It could ultimately provide clues as to how the health status of health care professionals could affect their ability to assess their patients' pain.
  • Publication
    Restreint
    The neural network of motor imagery : an ALE meta-analysis
    (Elsevier, 2013-06-01) Eugène, Fanny; Hétu, Sébastien; Jackson, Philip L.; Saimpont, Arnaud; Coll, Michel-Pierre; Grégoire, Mathieu; Michon, Pierre-Emmanuel
    Motor imagery (MI) or the mental simulation of action is now increasingly being studied using neuroimaging techniques such as positron emission tomography and functional magnetic resonance imaging. The booming interest in capturing the neural underpinning of MI has provided a large amount of data which until now have never been quantitatively summarized. The aim of this activation likelihood estimation (ALE) meta-analysis was to provide a map of the brain structures involved in MI. Combining the data from 75 papers revealed that MI consistently recruits a large fronto-parietal network in addition to subcortical and cerebellar regions. Although the primary motor cortex was not shown to be consistently activated, the MI network includes several regions which are known to play a role during actual motor execution. The body part involved in the movements, the modality of MI and the nature of the MI tasks used all seem to influence the consistency of activation within the general MI network. In addition to providing the first quantitative cortical map of MI, we highlight methodological issues that should be addressed in future research.
  • Publication
    Restreint
    Revue des facteurs qui modulent les réponses cérébrale et comportementale à la douleur d'autrui
    (Elsevier, 2012-09-25) Eugène, Fanny; Jackson, Philip L.; Coll, Michel-Pierre; Grégoire, Mathieu
    La douleur est une expérience subjective propre à chaque individu qui l’expérimente. Un observateur ne peut donc qu’inférer la douleur de la personne souffrante puisqu’il ne peut pas la mesurer directement. Une évaluation adéquate de la douleur dans un contexte de soins, notamment par les professionnels de la santé ou par les aidants naturels, est essentielle à une prise en charge appropriée de celle-ci. Cet article présente différents facteurs qui peuvent influencer les réponses comportementale et cérébrale face à la douleur d’autrui. Ces facteurs seront présentés en trois catégories, soient ceux liés à l’observateur, ceux liés à la personne en douleur et ceux liés au contexte ou à la relation entre l’observateur et la personne en douleur. L’impact de ces facteurs en contexte d’intervention et de traitement de la douleur est discuté. Nous proposons que la perception optimale de la douleur d’autrui ou du moins la connaissance des différents facteurs pouvant moduler l’évaluation de cette douleur, représente une première étape vers une meilleure prise en charge de la douleur par les intervenants concernés.
  • Publication
    Accès libre
    The effect of tDCS over the right temporo-parietal junction on pain empathy
    (Elsevier, 2017-06-01) Jackson, Philip L.; Coll, Michel-Pierre; B. Tremblay, Marie-Pier
    Empathy is a complex psychological phenomenon crucial for social perception and interactions. Several lines of evidence suggest that the right temporo-parietal junction is involved in self-other control mechanisms that play an important role in empathic responses. However, limited direct evidence of the involvement of this region in empathic responses is currently available. In this study, inhibitory transcranial direct current stimulation over this region influenced empathic responses to others’ pain. It was found that compared to participants that received anodal or sham transcranial direct current stimulation, participants who received cathodal transcranial direct current stimulation over the right temporo-parietal junction perceived the pain of others as less intense compared to sham stimulation and showed decreased late event related potentials to facial expressions of pain. Furthermore, it was found the stimulation had no significant effect on measures of sensorimotor resonance and physiological responses to pain in others. Our results demonstrate that the right temporo-parietal junction plays a role in empathic responses and that its inhibition can decrease behavioural and cerebral measures related to the cognitive-evaluative component of empathy. It is proposed that the right temporo-parietal junction is a valid stimulation target to study the influence of self-other control in empathic processes and could be useful to study the involvement of this region observed in clinical conditions characterized by altered empathic responses.
  • Publication
    Accès libre
    La perception de la douleur d'autrui chez les professionnels de la santé : implication pour l'intervention
    (2016) Coll, Michel-Pierre; Jackson, Philip L.
    La perception de la douleur d’autrui est un phénomène complexe pouvant être influencé par de nombreux facteurs. Dans les milieux cliniques, la perception adéquate de la douleur d’autrui représente une étape importante dans le traitement de celle-ci. Toutefois, certaines études suggèrent que l’exposition répétée à la douleur d’autrui vécue par les professionnels de la santé pourrait mener à une sous-estimation de l’intensité de la douleur des patients et à une diminution des comportements d’aide offerts à ceux-ci. Cette thèse visait donc à utiliser les méthodes des neurosciences cognitives et sociales pour étudier les effets de l’expérience clinique sur la perception et la réponse à la douleur d’autrui. Le premier objectif était d’isoler l’effet d’une exposition répétée à la douleur d’autrui sur la réponse comportementale et cérébrale à celle-ci. La première étude expérimentale de la thèse a permis de mettre en évidence que l’exposition répétée à la douleur d’autrui est associée à des changements dans les réponses comportementales et cérébrales suggérant une diminution de l’intensité perçue et de la saillance des expressions de douleur observées subséquemment. Le second objectif de la thèse était de comparer le comportement d’aide envers la douleur d’autrui entre des professionnels de la santé et des participants sans expérience clinique et les mécanismes cérébraux associés. La seconde étude expérimentale de la thèse montre que lorsque confrontés à la douleur d’autrui, les professionnels de la santé aident davantage les personnes en douleur. Ceci est lié à une plus grande régulation de la réponse émotionnelle indiquée par une activité plus importante de certaines régions préfrontales lors de l’observation de la douleur d’autrui. Ensemble, les résultats de cette thèse suggèrent que l’exposition répétée à la douleur d’autrui mène à une plus grande régulation de la réponse affective lors de l’observation de la douleur d’autrui et que cette plus grande régulation permettrait aux professionnels de la santé de d’aider davantage les patients en douleur rencontrés au quotidien. Les travaux de cette thèse soulignent que la régulation émotionnelle est un phénomène important à tenir compte dans les interactions cliniques et dans la formation des professionnels de la santé.
  • Publication
    Restreint
    Perception of pain in others : implication for caregivers
    (Future Medicine, 2011-01-01) Eugène, Fanny; Jackson, Philip L.; Latimer, Margot; Coll, Michel-Pierre; Grégoire, Mathieu
    The subjective nature of pain renders its perception in others a challenge for clinicians and informal caregivers responsible for its assessment and relief. Adequate perception of others’ pain relies on different behavioral and neurophysiological mechanisms. Several individual, relational and contextual factors can influence the way the brain reacts to others’ pain and the perception and assessment of this pain. This article focuses on recent neurophysiological and psychological evidence that characterizes these factors, and discusses their potential impact on the perception of others’ pain in a caregiving context. Factors influencing the perception of pain in others are divided into factors related to the self (caregiver), factors related to the other (patient), and factors related to the relationship between those individuals and the context in which the pain is perceived. We propose that the perception of others’ pain plays a crucial role in the treatment provided by clinicians and informal caregivers, and that further research could lead to improving decision-making regarding pain management.
  • Publication
    Accès libre
    Neural correlates of prosocial behaviour towards persons in pain in healthcare providers
    (Elsevier, 2017-06-30) Eugène, Fanny; Jackson, Philip L.; Coll, Michel-Pierre; Grégoire, Mathieu
    Pain perceived in others can be a stressful signal that elicits personal distress and discomfort that can interfere with prosocial behaviors. Healthcare providers (HCPs) have to be able to regulate these self-oriented feelings to offer optimal help to patients in pain. However, previous studies have documented a tendency in HCPs to underestimate the pain of patients that could interfere with optimal help to these patients. The aim of this study was to compare HCP and control (CTL) participants’ prosocial behavior towards persons in pain and their associated brain responses. HCPs and CTL participants took part in a newly developed prosocial task during which they were asked to choose how much time they wanted to offer to help patients in pain. It was shown that compared to CTL participants, HCPs offered more help to persons in pain and reported less trait personal distress when facing suffering in others. Additional evidence was provided by the fMRI results, which indicated that compared to CTL participants, HCP participants showed different pattern of activity in the dorsolateral prefrontal cortex, bilateral precuneus and the posterior cingulate cortex during the prosocial task, suggesting that the underlying mechanisms of the difference in prosocial behaviors could vary according to the degree to which processes such as mentalizing and cognitive control are solicited.