scholarly journals Temporal Dynamics of Natural Static Emotional Facial Expressions Decoding: A Study Using Event- and Eye Fixation-Related Potentials

2018 ◽  
Vol 9 ◽  
Author(s):  
Anne Guérin-Dugué ◽  
Raphaëlle N. Roy ◽  
Emmanuelle Kristensen ◽  
Bertrand Rivet ◽  
Laurent Vercueil ◽  
...  
Keyword(s):  
Facial Expressions ◽  
Temporal Dynamics ◽  
Emotional Facial Expressions ◽  
Eye Fixation ◽  
Related Potentials

scholarly journals The Relationship Between Childhood Emotional Abuse and Processing of Emotional Facial Expressions in Healthy Young Men: Event-Related Potential and Behavioral Evidence

2021 ◽  
Vol 12 ◽  
Author(s):  
Yutong Liu ◽  
Huini Peng ◽  
Jianhui Wu ◽  
Hongxia Duan
Keyword(s):  
Facial Expressions ◽  
Childhood Maltreatment ◽  
Emotional Abuse ◽  
Young Men ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Emotional Facial Expressions ◽  
Related Potentials ◽  
Childhood Emotional Abuse ◽  
The Relationship

Background: Individuals exposed to childhood maltreatment present with a deficiency in emotional processing in later life. Most studies have focused mainly on childhood physical or sexual abuse; however, childhood emotional abuse, a core issue underlying different forms of childhood maltreatment, has received relatively little attention. The current study explored whether childhood emotional abuse is related to the impaired processing of emotional facial expressions in healthy young men.Methods: The emotional facial processing was investigated in a classical gender discrimination task while the event-related potentials (ERPs) data were collected. Childhood emotional abuse was assessed by a Childhood Trauma Questionnaire (CTQ) among 60 healthy young men. The relationship between the score of emotional abuse and the behavioral and the ERP index of emotional facial expression (angry, disgust, and happy) were explored.Results: Participants with a higher score of childhood emotional abuse responded faster on the behavioral level and had a smaller P2 amplitude on the neural level when processing disgust faces compared to neutral faces.Discussion: Individuals with a higher level of childhood emotional abuse may quickly identify negative faces with less cognitive resources consumed, suggesting altered processing of emotional facial expressions in young men with a higher level of childhood emotional abuse.

scholarly journals Alexithymia explains atypical spatio-temporal dynamics of eye gaze in autism

2021 ◽  
Author(s):  
Helio Clemente Cuve ◽  
Santiago Castiello ◽  
brook shiferaw ◽  
Eri Ichijo ◽  
Caroline Catmur ◽  
...  
Keyword(s):  
Facial Expressions ◽  
Temporal Dynamics ◽  
Eye Gaze ◽  
Emotion Processing ◽  
Visual Exploration ◽  
Emotional Facial Expressions ◽  
Information Theoretic ◽  
Emotional Faces ◽  
Gaze Patterns ◽  
Spatio Temporal

Recognition of emotional facial expressions is considered to be atypical in autism. This difficulty is thought to be due to the way that facial expressions are visually explored. Evidence for atypical visual exploration of emotional faces in autism is, however, equivocal. We propose that, where observed, atypical visual exploration of emotional facial expressions is due to alexithymia, a distinct but frequently co-occurring condition. In this eye-tracking study we tested the alexithymia hypothesis using a number of recent methodological advances to study eye gaze during several emotion processing tasks (emotion recognition, intensity judgements, free gaze), in 25 adults with, and 45 without, autism. A multilevel polynomial modelling strategy was used to describe the spatiotemporal dynamics of eye gaze to emotional facial expressions. Converging evidence from traditional and novel analysis methods revealed that atypical gaze to the eyes is best predicted by alexithymia in both autistic and non-autistic individuals. Information theoretic metrics also revealed differential effects of task on gaze patterns as a function of alexithymia, but not autism. These findings highlight factors underlying atypical emotion processing in autistic individuals, with wide-ranging implications for emotion research.

scholarly journals The Effects of Dynamic and Static Emotional Facial Expressions of Humans and Their Avatars on the EEG: An ERP and ERD/ERS Study

2021 ◽  
Vol 15 ◽  
Author(s):  
Teresa Sollfrank ◽  
Oona Kohnen ◽  
Peter Hilfiker ◽  
Lorena C. Kegel ◽  
Hennric Jokeit ◽  
...  
Keyword(s):  
Facial Expressions ◽  
Event Related Potentials ◽  
Emotional Facial Expressions ◽  
Emotional Faces ◽  
Dynamic Facial Expressions ◽  
The Face ◽  
Related Potentials ◽  
Face Stimuli ◽  
Human Faces ◽  
Healthy Participants

This study aimed to examine whether the cortical processing of emotional faces is modulated by the computerization of face stimuli (”avatars”) in a group of 25 healthy participants. Subjects were passively viewing 128 static and dynamic facial expressions of female and male actors and their respective avatars in neutral or fearful conditions. Event-related potentials (ERPs), as well as alpha and theta event-related synchronization and desynchronization (ERD/ERS), were derived from the EEG that was recorded during the task. All ERP features, except for the very early N100, differed in their response to avatar and actor faces. Whereas the N170 showed differences only for the neutral avatar condition, later potentials (N300 and LPP) differed in both emotional conditions (neutral and fear) and the presented agents (actor and avatar). In addition, we found that the avatar faces elicited significantly stronger reactions than the actor face for theta and alpha oscillations. Especially theta EEG frequencies responded specifically to visual emotional stimulation and were revealed to be sensitive to the emotional content of the face, whereas alpha frequency was modulated by all the stimulus types. We can conclude that the computerized avatar faces affect both, ERP components and ERD/ERS and evoke neural effects that are different from the ones elicited by real faces. This was true, although the avatars were replicas of the human faces and contained similar characteristics in their expression.

Early institutionalized care disrupts the development of emotion processing in prosody

2021 ◽  
pp. 1-10
Author(s):  
Lisa K. Chinn ◽  
Irina Ovchinnikova ◽  
Anastasia A. Sukmanova ◽  
Aleksandra O. Davydova ◽  
Elena L. Grigorenko
Keyword(s):  
Facial Expressions ◽  
Cognitive Skills ◽  
Family Care ◽  
Event Related Potentials ◽  
Brain Regions ◽  
Emotional Facial Expressions ◽  
Social Emotional ◽  
Brain Responses ◽  
Related Potentials ◽  
History Of

Abstract Millions of children worldwide are raised in institutionalized settings. Unfortunately, institutionalized rearing is often characterized by psychosocial deprivation, leading to difficulties in numerous social, emotional, physical, and cognitive skills. One such skill is the ability to recognize emotional facial expressions. Children with a history of institutional rearing tend to be worse at recognizing emotions in facial expressions than their peers, and this deficit likely affects social interactions. However, emotional information is also conveyed vocally, and neither prosodic information processing nor the cross-modal integration of facial and prosodic emotional expressions have been investigated in these children to date. We recorded electroencephalograms (EEG) while 47 children under institutionalized care (IC) (n = 24) or biological family care (BFC) (n = 23) viewed angry, happy, or neutral facial expressions while listening to pseudowords with angry, happy, or neutral prosody. The results indicate that 20- to 40-month-olds living in IC have event-related potentials (ERPs) over midfrontal brain regions that are less sensitive to incongruent facial and prosodic emotions relative to children under BFC, and that their brain responses to prosody are less lateralized. Children under IC also showed midfrontal ERP differences in processing of angry prosody, indicating that institutionalized rearing may specifically affect the processing of anger.

Eye fixation–related potentials (EFRPs) during object identification

2010 ◽  
Vol 27 (5-6) ◽  
pp. 187-192 ◽  
Author(s):  
PIA RÄMÄ ◽  
THIERRY BACCINO
Keyword(s):  
Visual Perception ◽  
Temporal Dynamics ◽  
Brain Activity ◽  
Object Identification ◽  
Identification Task ◽  
Eye Fixation ◽  
Electrical Brain Activity ◽  
Eye Fixations ◽  
Current Technique ◽  
Related Potentials

AbstractEye fixation–related potential (EFRP) measures electrical brain activity in response to eye fixations. The aim of the current study was to investigate whether the EFRPs vary during consecutive eye fixations while subjects were performing an object identification task. Eye fixations evoked P1 and N1 components at the occipital and parietal recording sites. The latency of P1 component increased during consecutive fixations. The amplitude of P1 increased and the amplitude of N1 decreased during consecutive fixations. The results indicate that EFRPs are modulated during consecutive fixations, suggesting that the current technique may provide a useful tool to study temporal dynamics of visual perception and processes underlying object identification.

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