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Silva F, Garrido MI, Soares SC. The effect of anxiety and its interplay with social cues when perceiving aggressive behaviours. Q J Exp Psychol (Hove) 2024:17470218241258209. [PMID: 38785293 DOI: 10.1177/17470218241258209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Contextual cues and emotional states carry expectations and biases that are used to attribute meaning to what we see. In addition, emotional states, such as anxiety, shape our visual systems, increasing overall, and particularly threat-related, sensitivity. It remains unclear, however, how anxiety interacts with additional cues when categorising sensory input. This is especially important in social scenarios where ambiguous gestures are commonplace, thus requiring the integration of cues for a proper interpretation. To this end, we decided to assess how states of anxiety might bias the perception of potentially aggressive social interactions, and how external cues are incorporated in this process. Participants (N = 71) were tasked with signalling the presence of aggression in ambiguous social interactions. Simultaneously, an observer (facial expression) reacted (by showing an emotional expression) to this interaction. Importantly, participants performed this task under safety and threat of shock conditions. Decision measures and eye-tracking data were collected. Our results showed that threat of shock did not affect sensitivity nor criterion when detecting aggressive interactions. The same pattern was observed for response times. Drift diffusion modelling analysis, however, suggested quicker evidence accumulation when under threat. Finally, dwell times over the observer were higher when under threat, indicating a possible association between anxiety states and a bias towards potentially threat-related indicators. Future probing into this topic remains a necessity to better explain the current findings.
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Affiliation(s)
- Fábio Silva
- William James Center for Research, University of Aveiro, Aveiro, Portugal
| | - Marta I Garrido
- Melbourne School of Psychological Sciences, The University of Melbourne, Vic, Australia
- Graeme Clark Institute for Biomedical Engineering, The University of Melbourne, Vic, Australia
| | - Sandra C Soares
- William James Center for Research, University of Aveiro, Aveiro, Portugal
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2
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Oguz OC, Aydin B, Urgen BA. Biological motion perception in the theoretical framework of perceptual decision-making: An event-related potential study. Vision Res 2024; 218:108380. [PMID: 38479050 DOI: 10.1016/j.visres.2024.108380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 03/06/2024] [Accepted: 03/06/2024] [Indexed: 04/13/2024]
Abstract
Biological motion perception plays a critical role in various decisions in daily life. Failure to decide accordingly in such a perceptual task could have life-threatening consequences. Neurophysiology and computational modeling studies suggest two processes mediating perceptual decision-making. One of these signals is associated with the accumulation of sensory evidence and the other with response selection. Recent EEG studies with humans have introduced an event-related potential called Centroparietal Positive Potential (CPP) as a neural marker aligned with the sensory evidence accumulation while effectively distinguishing it from motor-related lateralized readiness potential (LRP). The present study aims to investigate the neural mechanisms of biological motion perception in the framework of perceptual decision-making, which has been overlooked before. More specifically, we examine whether CPP would track the coherence of the biological motion stimuli and could be distinguished from the LRP signal. We recorded EEG from human participants while they performed a direction discrimination task of a point-light walker stimulus embedded in various levels of noise. Our behavioral findings revealed shorter reaction times and reduced miss rates as the coherence of the stimuli increased. In addition, CPP tracked the coherence of the biological motion stimuli with a tendency to reach a common level during the response, albeit with a later onset than the previously reported results in random-dot motion paradigms. Furthermore, CPP was distinguished from the LRP signal based on its temporal profile. Overall, our results suggest that the mechanisms underlying perceptual decision-making generalize to more complex and socially significant stimuli like biological motion.
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Affiliation(s)
- Osman Cagri Oguz
- Department of Psychology, Bilkent University, Ankara 06800, Turkey; Department of Neuroscience, Bilkent University, Ankara 06800, Turkey.
| | - Berfin Aydin
- Department of Neuroscience, Bilkent University, Ankara 06800, Turkey
| | - Burcu A Urgen
- Department of Psychology, Bilkent University, Ankara 06800, Turkey; Department of Neuroscience, Bilkent University, Ankara 06800, Turkey; Aysel Sabuncu Brain Research Center and National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara 06800, Turkey.
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3
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Prabhakar AT, Ninan GA, Roy A, Kumar S, Margabandhu K, Priyadarshini Michael J, Bal D, Mannam P, McKendrick AM, Carter O, Garrido MI. Self-motion induced environmental kinetopsia and pop-out illusion - Insight from a single case phenomenology. Neuropsychologia 2024; 196:108820. [PMID: 38336207 DOI: 10.1016/j.neuropsychologia.2024.108820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 01/07/2024] [Accepted: 02/06/2024] [Indexed: 02/12/2024]
Abstract
Stable visual perception, while we are moving, depends on complex interactions between multiple brain regions. We report a patient with damage to the right occipital and temporal lobes who presented with a visual disturbance of inward movement of roadside buildings towards the centre of his visual field, that occurred only when he moved forward on his motorbike. We describe this phenomenon as "self-motion induced environmental kinetopsia". Additionally, he was identified to have another illusion, in which objects displayed on the screen, appeared to pop out of the background. Here, we describe the clinical phenomena and the behavioural tasks specifically designed to document and measure this altered visual experience. Using the methods of lesion mapping and lesion network mapping we were able to demonstrate disrupted functional connectivity in the areas that process flow-parsing such as V3A and V6 that may underpin self-motion induced environmental kinetopsia. Moreover, we suggest that altered connectivity to the regions that process environmental frames of reference such as retrosplenial cortex (RSC) might explain the pop-out illusion. Our case adds novel and convergent lesion-based evidence to the role of these brain regions in visual processing.
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Affiliation(s)
- Appawamy Thirumal Prabhakar
- Cognitive neuroscience and Clinical Phenomenology Lab, Christian Medical College, Vellore, India; Department of Neurological Sciences, Christian Medical College, Vellore, India; Melbourne School of Psychological Sciences, University of Melbourne, Vic, Australia.
| | - George Abraham Ninan
- Cognitive neuroscience and Clinical Phenomenology Lab, Christian Medical College, Vellore, India
| | - Anupama Roy
- Cognitive neuroscience and Clinical Phenomenology Lab, Christian Medical College, Vellore, India; Department of Neurological Sciences, Christian Medical College, Vellore, India
| | - Sharath Kumar
- Department of Neurological Sciences, Christian Medical College, Vellore, India
| | - Kavitha Margabandhu
- Department of Neurological Sciences, Christian Medical College, Vellore, India
| | - Jessica Priyadarshini Michael
- Cognitive neuroscience and Clinical Phenomenology Lab, Christian Medical College, Vellore, India; Department of Neurological Sciences, Christian Medical College, Vellore, India
| | - Deepti Bal
- Department of Neurological Sciences, Christian Medical College, Vellore, India
| | - Pavithra Mannam
- Department of Radiology, Christian Medical College, Vellore, India
| | - Allison M McKendrick
- Division of Optometry, School of Allied Health, University of Western Australia, Lions Eye Institute, Perth, Australia
| | - Olivia Carter
- Melbourne School of Psychological Sciences, University of Melbourne, Vic, Australia
| | - Marta I Garrido
- Melbourne School of Psychological Sciences, University of Melbourne, Vic, Australia; Graeme Clark Institute for Biomedical Engineering, University of Melbourne, Vic, Australia
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4
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Bouazzaoui B, Angel L, Moutoussamy I, Villatte J, Isingrini M, Bidet-Ildei C. Kinematic observation reduces effect of aging on episodic memory performance. Acta Psychol (Amst) 2024; 243:104130. [PMID: 38219430 DOI: 10.1016/j.actpsy.2024.104130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 11/30/2023] [Accepted: 01/08/2024] [Indexed: 01/16/2024] Open
Abstract
This study investigated the influence of kinematics observation (i.e., observing action from only the motion of the main joints of an actor) on episodic memory performance differences between young and older adults. To this end, 42 young (20-35 years) and 45 older (60-75 years) participants performed a free recall task in two different conditions: either after an encoding phase consisting of the visual presentation and reading of action verbs or after an encoding phase consisting of the visual presentation and naming of point-light displays of humans performing the same actions. Results showed a beneficial effect of point-light display encoding for both young and older participants but with a more pronounced benefit for the older participants compared to young adults. These findings are discussed in relation to the embodied view of memory which considers that memory is directly linked to the sensorimotor experiences and the environmental support hypothesis which postulates that elaborate processing can improve memory performance. In conclusion, kinematic observation could constitute an interesting potential intervention for supporting memory in older adults.
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Affiliation(s)
- Badiâa Bouazzaoui
- UMR CNRS 7295, Centre de Recherches sur la Cognition et l'Apprentissage, Université de Tours, Université de Poitiers, France.
| | - Lucie Angel
- UMR CNRS 7295, Centre de Recherches sur la Cognition et l'Apprentissage, Université de Tours, Université de Poitiers, France
| | - Ilona Moutoussamy
- UMR CNRS 7295, Centre de Recherches sur la Cognition et l'Apprentissage, Université de Tours, Université de Poitiers, France
| | - Jérémy Villatte
- UMR CNRS 7295, Centre de Recherches sur la Cognition et l'Apprentissage, Université de Tours, Université de Poitiers, France
| | - Michel Isingrini
- UMR CNRS 7295, Centre de Recherches sur la Cognition et l'Apprentissage, Université de Tours, Université de Poitiers, France
| | - Christel Bidet-Ildei
- UMR CNRS 7295, Centre de Recherches sur la Cognition et l'Apprentissage, Université de Tours, Université de Poitiers, France; Institut Universitaire de, France
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5
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Preißler L, Keck J, Krüger B, Munzert J, Schwarzer G. Recognition of emotional body language from dyadic and monadic point-light displays in 5-year-old children and adults. J Exp Child Psychol 2023; 235:105713. [PMID: 37331307 DOI: 10.1016/j.jecp.2023.105713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/13/2023] [Accepted: 05/16/2023] [Indexed: 06/20/2023]
Abstract
Most child studies on emotion perception used faces and speech as emotion stimuli, but little is known about children's perception of emotions conveyed by body movements, that is, emotional body language (EBL). This study aimed to investigate whether processing advantages for positive emotions in children and negative emotions in adults found in studies on emotional face and term perception also occur in EBL perception. We also aimed to uncover which specific movement features of EBL contribute to emotion perception from interactive dyads compared with noninteractive monads in children and adults. We asked 5-year-old children and adults to categorize happy and angry point-light displays (PLDs), presented as pairs (dyads) and single actors (monads), in a button-press task. By applying representational similarity analyses, we determined intra- and interpersonal movement features of the PLDs and their relation to the participants' emotional categorizations. Results showed significantly higher recognition of happy PLDs in 5-year-olds and of angry PLDs in adults in monads but not in dyads. In both age groups, emotion recognition depended significantly on kinematic and postural movement features such as limb contraction and vertical movement in monads and dyads, whereas in dyads recognition also relied on interpersonal proximity measures such as interpersonal distance. Thus, EBL processing in monads seems to undergo a similar developmental shift from a positivity bias to a negativity bias, as was previously found for emotional faces and terms. Despite these age-specific processing biases, children and adults seem to use similar movement features in EBL processing.
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Affiliation(s)
- Lucie Preißler
- Department of Developmental Psychology, Justus Liebig University Giessen, 35394 Gießen, Germany.
| | - Johannes Keck
- Neuromotor Behavior Lab, Department of Sport Science, Justus Liebig University Giessen, 35394 Gießen, Germany
| | - Britta Krüger
- Neuromotor Behavior Lab, Department of Sport Science, Justus Liebig University Giessen, 35394 Gießen, Germany
| | - Jörn Munzert
- Neuromotor Behavior Lab, Department of Sport Science, Justus Liebig University Giessen, 35394 Gießen, Germany
| | - Gudrun Schwarzer
- Department of Developmental Psychology, Justus Liebig University Giessen, 35394 Gießen, Germany
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6
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Francisco V, Louis F, David R, Billot M, Rouquette AL, Broc L, Bidet-Ildei C. Point-light display: a new tool to improve verb recovery in patients with aphasia? A pilot study. Exp Brain Res 2023; 241:1329-1337. [PMID: 37010539 DOI: 10.1007/s00221-023-06607-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 03/24/2023] [Indexed: 04/04/2023]
Abstract
Some studies have demonstrated that Action Observation (AO) could help patients with aphasia to recover use of verbs. However, the role of kinematics in this effect has remained unknown. The main aim was to assess the effectiveness of a complementary intervention based on the observation of action kinematics in patients with aphasia. Seven aphasic patients (3 males, 4 females) aged between 55 and 88 years participated in the studies. All patients received a classical intervention and an additional, specific intervention based on action observation. This consisted in visualizing a static image or a point-light sequence representing a human action and in trying to name the verb representing the action. In each session, 57 actions were visualized: 19 represented by a static drawing, 19 by a non-focalized point-light sequence, i.e., a point-light display with all dots in white, and 19 by a focalized point-light sequence, i.e., a point-light display (PLD) with the dots corresponding to the main limbs in yellow. Before (pre-test) and after (post-test) the intervention, each patient performed the same denomination task, in which all actions were presented in photographs. The results showed a significant improvement in performance between pre and post-test, but only when the actions were presented in focalized and non-focalized point-light sequences during the intervention. The presentation of action kinematics seems crucial in the recovery of verbs in patients with aphasia. This should be considered by speech therapists in their interventions.
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Affiliation(s)
- Victor Francisco
- Centre de Recherches Sur La Cognition Et L'Apprentissage, Université de Poitiers, Université de Tours, CNRS, Bâtiment A5-5 Rue Théodore Lefebvre, TSA 21103, 86073, Poitiers cedex 9, France
- Université de Poitiers, ISAE-ENSMA, CNRS, PPRIME, Poitiers, France
- Melioris, Centre de Médecine Physique Et de Réadaptation Fonctionnelle Le Grand Feu, Niort, France
| | - Frédéric Louis
- Melioris, Centre de Médecine Physique Et de Réadaptation Fonctionnelle Le Grand Feu, Niort, France
| | - Romain David
- Service de Médecine Physique Et Réadaptation, Centre Hospitalier Universitaire de Poitiers, Poitiers, France
- PRISMATICS (Predictive Research in Spine/Neurostimulation Management and Thoracic Innovation in Cardiac Surgery, Poitiers University Hospital, Poitiers, France
| | - Maxime Billot
- PRISMATICS (Predictive Research in Spine/Neurostimulation Management and Thoracic Innovation in Cardiac Surgery, Poitiers University Hospital, Poitiers, France
| | - Anne-Laure Rouquette
- Melioris, Centre de Médecine Physique Et de Réadaptation Fonctionnelle Le Grand Feu, Niort, France
| | - Lucie Broc
- Centre de Recherches Sur La Cognition Et L'Apprentissage, Université de Poitiers, Université de Tours, CNRS, Bâtiment A5-5 Rue Théodore Lefebvre, TSA 21103, 86073, Poitiers cedex 9, France
| | - Christel Bidet-Ildei
- Centre de Recherches Sur La Cognition Et L'Apprentissage, Université de Poitiers, Université de Tours, CNRS, Bâtiment A5-5 Rue Théodore Lefebvre, TSA 21103, 86073, Poitiers cedex 9, France.
- Institut Universitaire de France (IUF), Paris, France.
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7
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Francisco V, Decatoire A, Bidet-Ildei C. Action observation and motor learning: The role of action observation in learning judo techniques. Eur J Sport Sci 2023; 23:319-329. [PMID: 35098899 DOI: 10.1080/17461391.2022.2036816] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Within the theoretical framework of embodied cognition, several experiments have shown the existence of links between action observation and motor learning. Our aim was to assess the effectiveness of an observational learning protocol (action observation training: AOT) of point-light-display (PLD) in judoka. Twenty participants were given 7 days to learn Go-No-Sen. During this time period, all of the participants received conventional kata training consisting of Uchi-komi and Nage-komi (repetition of techniques) on tatami. In addition to this conventional learning, the experimental group watched 5 min of PLD video representing the different kata techniques, whereas the control group watched neutral videos during the same time period. After the learning period, both the qualitative and biomechanical performances on the kata and the transfer abilities were assessed. The results showed better biomechanical performance and transfer ability in the experimental group than in the control group. Therefore, this first experiment suggests that observational learning of PLD may be beneficial for the acquisition of judo techniques. Future experiments will be needed to specify the mechanisms that are involved in this effect.
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Affiliation(s)
- Victor Francisco
- Centre de Recherches sur la Cognition et l'Apprentissage (UMR CNRS 7295), Centre National de la Recherche Scientifique (CNRS), Université de Poitiers, Université de Tours, Poitiers, France
| | - Arnaud Decatoire
- Centre National de la Recherche Scientifique, Institut PPRIME (UPR CNRS 3346), Université de Poitiers, Poitiers, France
| | - Christel Bidet-Ildei
- Centre de Recherches sur la Cognition et l'Apprentissage (UMR CNRS 7295), Centre National de la Recherche Scientifique (CNRS), Université de Poitiers, Université de Tours, Poitiers, France
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8
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Villatte J, Taconnat L, Bidet-Ildei C, Toussaint L. The role of implicit motor simulation on action verb memory. PSYCHOLOGICAL RESEARCH 2023; 87:441-451. [PMID: 35316393 DOI: 10.1007/s00426-022-01671-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 03/01/2022] [Indexed: 11/26/2022]
Abstract
Observation is known to improve memory for action. Previous findings linked such an effect with an easier relation processing of action components following observation compared to mere sentence reading. However, action observation also elicits implicit motor simulation, that is a processing of one's movement through the observer own motor system. We aimed to assess whether encoding of implicit motor simulation can also explain why observation is better than reading for action memory. To prevent influence of item relation processing, two studies about isolated action verbs learning were designed. In Experiment 1, action verbs were encoded with short videos of point-light human movements or with written definitions. Subsequent free recall indicated better memory for the verbs within the video clip condition. Experiment 2 compared two encoding conditions based on point-light human movement videos. Half of the verbs were learned with their normal corresponding movement (biological kinematic). For the other half of the verbs, the velocity of point-light movements was modified to create abnormal nonbiological kinematic actions. We observed better free recall for the verbs learned with biological kinematics. Taken together, those results suggest that action observation is beneficial because it allows the encoding of motor-related information (implicit motor simulation). Semantic resonance between linguistic and motor representations of action could also contribute to memory improvement. Contrary to previous studies, our results cannot be explained by an improvement of items relation processing. However, it suggests that the basic level of action verb memory is sensorimotor perception, such as implicit motor simulation.
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Affiliation(s)
- Jérémy Villatte
- Département de Psychologie, Centre National de la Recherche Scientifique, Centre de Recherches sur la Cognition et l'Apprentissage (UMR 7295), Université de Poitiers, Bâtiment A5, 5 rue Théodore Lefebvre TSA 21110, 86073, Poitiers cedex 9, France.
| | - Laurence Taconnat
- Département de Psychologie, Centre National de la Recherche Scientifique, Centre de Recherches sur la Cognition et l'Apprentissage (UMR, 7295), Université de Tours, Tours, France
| | - Christel Bidet-Ildei
- Département des Sciences du Sport, Centre National de la Recherche Scientifique, Centre de Recherches sur la Cognition et l'Apprentissage (UMR 7295), Université de Poitiers, Poitiers, France
| | - Lucette Toussaint
- Département des Sciences du Sport, Centre National de la Recherche Scientifique, Centre de Recherches sur la Cognition et l'Apprentissage (UMR 7295), Université de Poitiers, Poitiers, France
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9
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Bidet-Ildei C, Francisco V, Decatoire A, Pylouster J, Blandin Y. PLAViMoP database: A new continuously assessed and collaborative 3D point-light display dataset. Behav Res Methods 2023; 55:694-715. [PMID: 35441360 DOI: 10.3758/s13428-022-01850-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2022] [Indexed: 11/08/2022]
Abstract
It was more than 45 years ago that Gunnar Johansson invented the point-light display technique. This showed for the first time that kinematics is crucial for action recognition, and that humans are very sensitive to their conspecifics' movements. As a result, many of today's researchers use point-light displays to better understand the mechanisms behind this recognition ability. In this paper, we propose PLAViMoP, a new database of 3D point-light displays representing everyday human actions (global and fine-motor control movements), sports movements, facial expressions, interactions, and robotic movements. Access to the database is free, at https://plavimop.prd.fr/en/motions . Moreover, it incorporates a search engine to facilitate action retrieval. In this paper, we describe the construction, functioning, and assessment of the PLAViMoP database. Each sequence was analyzed according to four parameters: type of movement, movement label, sex of the actor, and age of the actor. We provide both the mean scores for each assessment of each point-light display, and the comparisons between the different categories of sequences. Our results are discussed in the light of the literature and the suitability of our stimuli for research and applications.
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Affiliation(s)
- Christel Bidet-Ildei
- Centre de Recherches sur la Cognition et l'Apprentissage (UMR CNRS 7295), Université de Poitiers, Université de Tours, Centre National de la Recherche Scientifique, Poitiers, France.
- MSHS, Bâtiment A5, 5 rue Théodore Lefebvre TSA 21103, 86073, Poitiers, Cedex 9, France.
| | - Victor Francisco
- Centre de Recherches sur la Cognition et l'Apprentissage (UMR CNRS 7295), Université de Poitiers, Université de Tours, Centre National de la Recherche Scientifique, Poitiers, France
| | - Arnaud Decatoire
- Institut PPRIME (UPR CNRS 3346), Université de Poitiers, Centre National de la Recherche Scientifique, Poitiers, France
| | - Jean Pylouster
- Centre de Recherches sur la Cognition et l'Apprentissage (UMR CNRS 7295), Université de Poitiers, Université de Tours, Centre National de la Recherche Scientifique, Poitiers, France
| | - Yannick Blandin
- Centre de Recherches sur la Cognition et l'Apprentissage (UMR CNRS 7295), Université de Poitiers, Université de Tours, Centre National de la Recherche Scientifique, Poitiers, France
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The Added Value of Point-Light Display Observation in Total Knee Arthroplasty Rehabilitation Program: A Prospective Randomized Controlled Pilot Study. Medicina (B Aires) 2022; 58:medicina58070868. [PMID: 35888587 PMCID: PMC9317203 DOI: 10.3390/medicina58070868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/30/2022] [Accepted: 06/26/2022] [Indexed: 11/19/2022] Open
Abstract
Background and Objectives: The present study aimed to assess the potential benefit of the observation of rehabilitation-related point-light display in addition to a conventional 3-week rehabilitation program, the objective being to improve functional capacity in patients having undergone total knee arthroplasty. Materials and Methods: Patients randomized in the control group had conventional rehabilitation treatment with two sessions per day 5 days a week of physical therapy (90 min), whereas patients in the experimental group had a program of conventional rehabilitation combined with a point-light display observation two times per day (5 min) and 3 days a week. Results: The patients of both groups had improved their performances by the end of the program, and the pre- and post-test improvement were superior for the experimental group over the control group concerning the total WOMAC score (p = 0.04), the functional WOMAC score (p = 0.03), and correct recognition of point-light displays (p = 0.003). Conclusions: These findings provide new insight favoring systematic point-light display observation to improve functional recovery in patients with total knee arthroplasty.
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Bidet-Ildei C, Decatoire A, Gil S. Recognition of Emotions From Facial Point-Light Displays. Front Psychol 2020; 11:1062. [PMID: 32581934 PMCID: PMC7287185 DOI: 10.3389/fpsyg.2020.01062] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 04/27/2020] [Indexed: 12/26/2022] Open
Abstract
Facial emotion recognition occupies a prominent place in emotion psychology. How perceivers recognize messages conveyed by faces can be studied in either an explicit or an implicit way, and using different kinds of facial stimuli. In the present study, we explored for the first time how facial point-light displays (PLDs) (i.e., biological motion with minimal perceptual properties) can elicit both explicit and implicit mechanisms of facial emotion recognition. Participants completed tasks of explicit or implicit facial emotion recognition from PLDs. Results showed that point-light stimuli are sufficient to allow facial emotion recognition, be it explicit and implicit. We argue that this finding could encourage the use of PLDs in research on the perception of emotional cues from faces.
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Affiliation(s)
- Christel Bidet-Ildei
- Université de Poitiers, Poitiers, France.,Université de Tours, Tours, France.,Centre de Recherches sur la Cognition et l'Apprentissage, UMR 7295, Poitiers, France.,Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Arnaud Decatoire
- Université de Poitiers, Poitiers, France.,Centre National de la Recherche Scientifique (CNRS), Paris, France.,Institut Pprime UPR 3346, Poitiers, France
| | - Sandrine Gil
- Université de Poitiers, Poitiers, France.,Université de Tours, Tours, France.,Centre de Recherches sur la Cognition et l'Apprentissage, UMR 7295, Poitiers, France.,Centre National de la Recherche Scientifique (CNRS), Paris, France
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