Sylvie Blairy

The Intensity of Emotional Facial Expressions and Decoding Accuracy

The influence of the physical intensity of emotional facial expressions on perceived intensity and emotion category decoding accuracy was assessed for expressions of anger, disgust, sadness, and happiness. The facial expressions of two men and two women posing each of the four emotions were used as stimuli. Six different levels of intensity of expression were created for each pose using a graphics morphing program. Twelve men and 12 women rated each of the 96 stimuli for perceived intensity of the underlying emotion and for the qualitative nature of the emotion expressed. The results revealed that perceived intensity varied linearly with the manipulated physical intensity of the expression. Emotion category decoding accuracy varied largely linearly with the manipulated physical intensity of the expression for expressions of anger, disgust, and sadness. For the happiness expressions only, the findings were consistent with a categorical judgment process. Sex of encoder produced significant effects for both dependent measures. These effects remained even after possible gender differences in encoding were controlled for, suggesting a perceptual bias on the part of the decoders.

THE INFLUENCE OF FACIAL EMOTION DISPLAYS, GENDER, AND ETHNICITY ON JUDGMENTS OF DOMINANCE AND AFFILIATION

Facial expressions of emotions convey not only information about emotional states but also about interpersonal intentions. The present study investigated whether factors known to influence the decoding of emotional expressions—the gender and ethnicity of the stimulus person as well as the intensity of the expression—would also influence attributions of interpersonal intentions. For this, 145 men and women rated emotional facial expressions posed by both Caucasian and Japanese male and female stimulus persons on perceived dominance and affiliation. The results showed that the sex and the ethnicity of the encoder influenced observers ratings of dominance and affiliation. For anger displays only, this influence was mediated by expectations regarding how likely it is that a particular encoder group would display anger. Further, affiliation ratings were equally influenced by low intensity and by high intensity expressions, whereas only fairly intense emotional expressions affected attributions of dominance.

Deficits in decoding emotional facial expressions in Parkinson's disease

INTRODUCTIONnThe basal ganglia have numerous connections not only with the motor cortex but also with the prefrontal and limbic cortical areas. Therefore, basal ganglia lesions can disturb motor function but also cognitive function and emotion processing. The aim of the present study was to assess the consequences of Parkinsons disease (PD) on ability to decode emotional facial expressions (EFEs)-a method commonly used to investigate non-verbal emotion processing.nnnMETHODSnEighteen PD patients participated in the study, together with 18 healthy subjects strictly matched with respect to age, education and sex. The patients were early in the course of the disease and had not yet received any antiparkinsonian treatment. Decoding of EFEs was assessed using a standardized, quantitative task where the expressions were of moderate intensity, i.e. quite similar to those experienced in everyday life. A set of tests also assessed executive function. Visuospatial perception, depression and anxiety were measured.nnnRESULTSnEarly in the course of the disease, untreated PD patients were significantly impaired in decoding EFEs, as well as in executive function. The deficits were significantly interrelated, although neither was significantly related to severity of the motor symptoms. Visuospatial perception was not impaired, and the patients impairment was related neither to their depression nor to their anxiety score. The PD patients impairment in decoding EFEs was related to a systematic response bias.nnnCONCLUSIONnEarly in the course of PD, non-verbal emotional information processing is disturbed. This suggests that in PD, nigrostriatal dopaminergic depletion leads not only to motor and cognitive disturbances but also to emotional information processing deficits. The observed correlation pattern does not enable adoption of a clear-cut position in the debate over totally or partially segregated functional organization of the basal ganglia circuits.

Respiratory feedback in the generation of emotion

This article reports two studies investigating the relationship between emotional feelings and respiration. In the first study, participants were asked to produce an emotion of either joy, anger, fear or sadness and to describe the breathing pattern that fit best with the generated emotion. Results revealed that breathing patterns reported during voluntary production of emotion were (a) comparable to those objectively recorded in psychophysiological experiments on emotion arousal, (b) consistently similar across individuals, and (c) clearly differentiated among joy, anger, fear, and sadness. A second study used breathing instructions based on Study 1s results to investigate the impact of the manipulation of respiration on emotional feeling state. A cover story was used so that participants could not guess the actual purpose of the study. This manipulation produced significant emotional feeling states that were differentiated according to the type of breathing pattern. The implications of these findings for emotion theories based on peripheral feedback and for emotion regulation are discussed.

MIMICRY AND THE JUDGMENT OF EMOTIONAL FACIAL EXPRESSIONS

Lipps (1907) presented a model of empathy which had an important influence on later formulations. According to Lipps, individuals tend to mimic an interaction partners behavior, and this nonverbal mimicry induces—via a feedback process—the corresponding affective state in the observer. The resulting shared affect is believed to foster the understanding of the observed persons self. The present study tested this model in the context of judgments of emotional facial expressions. The results confirm that individuals mimic emotional facial expressions, and that the decoding of facial expressions is accompanied by shared affect. However, no evidence that emotion recognition accuracy or shared affect are mediated by mimicry was found. Yet, voluntary mimicry was found to have some limited influence on observer s assessment of the observed persons personality. The implications of these results with regard to Lipps original hypothesis are discussed.

Facial Reactions to Emotional Facial Expressions: Affect or Cognition?

This study investigated whether observers’ facial reactions to the emotional facial expressions of others represent an affective or a cognitive response to these emotional expressions. Three hypotheses were contrasted: (1) facial reactions to emotional facial expressions are due to mimicry as part of an affective empathic reaction; (2) facial reactions to emotional facial expressions

Subthalamic nucleus stimulation induces deficits in decoding emotional facial expressions in Parkinson’s disease

Background: Bilateral subthalamic nucleus (STN) stimulation is recognised as a treatment for parkinsonian patients with severe levodopa related motor complications. Although adverse effects are infrequent, some behavioural disturbances have been reported. Objective: To investigate the consequences of STN stimulation on emotional information processing in Parkinson’s disease by assessing the performance of an emotional facial expression (EFE) decoding task in a group of patients before and after surgery. Methods: 12 non-demented patients with Parkinson’s disease were studied. They were assessed one month before surgery and three months after. Their ability to decode EFEs was assessed using a standardised quantitative task. Overall cognitive function, executive function, visuospatial perception, depression, and anxiety were also measured. Twelve healthy controls were matched for age, sex, and duration of education. Results: Before surgery, the patients showed no impairment in EFE decoding compared with the controls. Their overall cognitive status was preserved but they had a moderate dysexecutive syndrome. Three months after surgery, they had significant impairment of EFE decoding. This was not related to their overall cognitive status or to depression/anxiety scores. Visuospatial perception was not impaired. There was no change in the extent of the dysexecutive syndrome except for a reduction in phonemic word fluency. Conclusions: Bilateral STN stimulation disturbs negative emotional information processing in Parkinson’s disease. The impairment appears specific and unrelated to certain secondary variables. This behavioural complication of STN may have implications for the patient’s social life.

Specificity deficit in the recollection of emotional memories in schizophrenia

The influence of emotion on episodic and autobiographical memory in schizophrenia was investigated. Using an experiential approach, the states of awareness accompanying recollection of pictures from the IAPS and of associated autobiographical memories was recorded. Results show that schizophrenia impairs episodic and autobiographical memories in their critical feature: autonoetic awareness, i.e., the type of awareness experienced when mentally reliving events from ones past. Schizophrenia was also associated with a reduction of specific autobiographical memories. The impact of stimulus valence on memory performance was moderated by clinical status. Patients with schizophrenia recognized more positive than negative pictures, and recalled more positive than negative autobiographical memories while controls displayed the opposite pattern. A hypothesis in terms of a fundamental executive deficit underlying these impairments is proposed.

Improvements in autobiographical memory in schizophrenia patients after a cognitive intervention: a preliminary study.

Background: Schizophrenia is associated with a reduction in accessing specific autobiographical information. This is consistent with the abnormal development of personal identity that characterizes this mental disorder. Using a schizophrenic population, the present study evaluates the effect of a cognitive intervention on autobiographical memory and the capacity to project oneself in the future. Sampling and Method: The intervention consisted of group sessions, during which participants were trained to recollect specific events reported in their diary. Furthermore, exercises to stimulate their thoughts about their personal identity were proposed. An autobiographical memory test was administrated before the intervention, after the intervention and at the 3-month follow-up. In addition, neuropsychological and affective assessments were conducted before and after treatments. Patients’ performances were compared to those from the control group. Results: The ability to recall specific events was improved by the cognitive intervention, and the benefits were preserved 3 months later. However, no neuropsychological or affective benefit was found. Conclusion: Despite positive results on specific memory, any significant benefits have yet to be extended to other clinical variables such as symptom reduction and neuropsychological/social functioning. Nevertheless, the results revealed that cognitive remediation therapy could be a useful additional intervention for autobiographical memory deficits in schizophrenia patients.

Depressive symptomatology and the influence of the behavioral avoidance and activation: A gender-specific investigation

BACKGROUNDnDepression is a highly prevalent disorder which is usually considered as differentially experienced depending on gender. Behavioral theories of depression pinpoint the importance of the behavioral avoidance in the maintenance of depression. However, little is known about the specific impact of the behavioral avoidance and activation on each depressive symptom as well as on gender differences on the behavioral features of depression.nnnMETHODSnThis studys aim was two-fold: (1) to assess the presence of gender differences on the BDI-II; (2) to investigate the respective predictive value of behavioral avoidance and of behavioral activation on each depressive symptom assessed by the BDI-II depending on gender. Community adults and adults attending mental healthcare composed the sample.nnnRESULTSnResults showed differences in symptomatology profiles depending on gender (e.g. higher scores of sadness, self-criticalness in women, higher scores of past failure and loss of pleasure in men). Behavioral avoidance positively predicted almost all depressive symptoms in women and in men while behavioral activation negatively predicted almost all symptoms in both gender. Nevertheless, the strengths of these relationships were different for some symptoms (e.g. pessimism).nnnLIMITATIONSnThe use of self-report instruments; the lack of assessment of causal or precipitating factors of the depressive symptomatology; the higher number of women in the sample.nnnCONCLUSIONSnResults are discussed with respect to previous findings and present clinical implications: (1) to underline the relevance of the combination of gender-specific assessment tools; (2) to highlight the need of tailored psychological intervention.