Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Facial Expression”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,027 records · Page 57Linked to original sources
PubMed2003

Differential deficits in expression recognition in gene-carriers and patients with Huntington's disease.

Previous studies in symptomatic patients and asymptomatic gene-carriers of Huntington's disease (HD) reported a differential deficit in the recognition of facial expressions of disgust. This impairment may point to involvement of the basal ganglia in the recognition of disgust. In this study, we compared the performance of 20 patients with symptoms of HD, 20 gene-carriers of HD and 20 healthy controls on two tests of facial expressions in order to further investigate the role of the basal ganglia in disgust recognition. Recognition of fear, rather than disgust, was most severely impaired in the patients, who were also impaired at recognising expressions of anger, disgust and sadness. Direct testing for a differential deficit in disgust at the group level (and at the level of individual HD cases) revealed that the patients were in fact significantly more impaired on the other negative expressions than on disgust. The gene-carriers were not impaired on any expression, although there was a trend for the gene-carriers to be poorer at recognising fearful faces than the controls. We argue that the expression recognition performance of the patients and gene-carriers simply reflects differences in task difficulty, rather than dysfunction of any mechanisms dedicated to specific emotions. In contrast to previous studies in patients or gene-carriers of HD, our findings provide no evidence for a role of the basal ganglia in the recognition of disgust and cast doubt on whether results from HD patients and gene-carriers can be used in support of a double dissociation between recognition of disgust and fear.

Adult↗
PubMed2003

Cortical orofacial motor representation in Old World monkeys, great apes, and humans. I. Quantitative analysis of cytoarchitecture.

Social life in anthropoid primates is mediated by interindividual communication, involving movements of the orofacial muscles for the production of vocalization and gestural expression. Although phylogenetic diversity has been reported in the auditory and visual communication systems of primates, little is known about the comparative neuroanatomy that subserves orofacial movement. The current study reports results from quantitative image analysis of the region corresponding to orofacial representation of primary motor cortex (Brodmann's area 4) in several catarrhine primate species (Macaca fascicularis, Papio anubis, Pongo pygmaeus, Gorilla gorilla, Pan troglodytes, and Homo sapiens) using the Grey Level Index method. This cortical region has been implicated in the execution of skilled motor activities such as voluntary facial expression and human speech. Density profiles of the laminar distribution of Nissl-stained neuronal somata were acquired from high-resolution images to quantify cytoarchitectural patterns. Despite general similarity in these profiles across catarrhines, multivariate analysis showed that cytoarchitectural patterns of individuals were more similar within-species versus between-species. Compared to Old World monkeys, the orofacial representation of area 4 in great apes and humans was characterized by an increased relative thickness of layer III and overall lower cell volume densities, providing more neuropil space for interconnections. These phylogenetic differences in microstructure might provide an anatomical substrate for the evolution of greater volitional fine motor control of facial expressions in great apes and humans.

Aged↗
PubMed2003

Impairment of recognition of disgust in Chinese with Huntington's or Wilson's disease.

The selective involvement of the basal ganglia in recognition of the facial expression of disgust was investigated by examining a group of six symptomatic Huntington's disease patients and 32 Wilson's disease patients in China. Morphed photographs of facial expressions covering happiness-surprise-fear-sadness-disgust-anger were used and the patients were asked to label each photo. Other measures assessed basic cognitive functions and perception of non-emotion facial information, such as perception of gender, age, gaze direction, and recognition of unfamiliar as well as famous people. There was dissociation between the perception of emotions and other facial information, and between impairment of recognition of disgust and other emotions. The basal ganglia are the overlapping substrate involved in both Huntington's and Wilson's disease, although each has its own other lesions. The differentially severe impairment of recognition of disgust in the Chinese Huntington's disease and Wilson's disease patients strengthens the view that basal ganglia are selectively involved in processing the emotion of disgust.

Adult↗
PubMed1991

Urofacial syndrome associated with hydrocephalus due to aqueductal stenosis.

The urofacial syndrome is an autosomal recessive disorder of distorted facial expression and neurogenic bladder with resultant urogenital tract damage. We report on an 8-year-old boy of consanguineous Arab parents with inverted facial expression upon laughing and renal changes as a consequence of a neurogenic bladder in addition to hydrocephalus due to stenosis of the aqueduct of Sylvius. We suggest that the association is not fortuitous and probably widens the spectrum of urofacial syndrome or represents a distinct entity mimicking the urofacial syndrome.

Cerebral Aqueduct↗
PubMedDate not supplied

Effect of topical tretinoin, chemical peeling and dermabrasion on p53 expression in facial skin.

The tumour suppressor protein p53 is a phosphoprotein that is activated by DNA damage. It is involved in the decision whether the cells should stop replication and proceed to repair their DNA, or to die by apoptosis. In the present study, we evaluate the effect of some treatment modalities on the expression of p53 in facial skin. Biopsy specimens were obtained from the facial skin of 20 patients before and after treatment using topical tretinoin (11 cases), TCA chemical peeling (5 cases) and dermabrasion (4 cases). Biopsy specimens were also obtained from 12 control subjects representing the same age groups of the patients. Topical tretinoin therapy was found to induce a significant decrease in the expression of p53 up to 6 months of therapy followed by a significant increase after 10 months of therapy. On the contrary, superficial TCA peeling did not induce any statistically significant change in the expression of p53. On the other hand dermabrasion was found to induce a significant decrease in the level of expression of p53 in biopsies obtained after complete re-epithelialization followed by a significant increase. These changes in the expression of p53 may play a role in mediating the effects of such treatment modalities on the epidermis, as well as prevention of actinic neoplasia by adjusting any disturbance in the proliferation/apoptosis balance observed in photoaged facial skin.

Administration, Topical↗
PubMed1999

Spared comprehension of emotional prosody in a patient with global aphasia.

BACKGROUND: Several studies have demonstrated that patients with right hemisphere damage, when compared with left-hemisphere damaged controls, are impaired at comprehending emotional prosody. Critics of these studies, however, note that selection may have been biased because left-hemisphere-damaged subjects had good verbal comprehension. OBJECTIVE: To learn whether a subject with a large left hemisphere stroke and global aphasia could comprehend emotional prosody in spoken material. METHOD: The authors formally tested speech and language with the Western Aphasia Battery and comprehension of emotional prosody and emotional facial expression with the Florida Affect Battery. RESULTS: The patient could not perform verbally mediated tests but demonstrated spared ability to match emotional prosody to emotional facial expressions under a variety of conditions. CONCLUSIONS: These observations further support the idea that verbal and emotional communication systems are independent and mediated by different hemispheres.

Adult↗
PubMed1999

Selective impairment in the recognition of anger induced by diazepam.

RATIONALE: Facial expressions appear to be processed by at least partially separable neuro-cognitive systems. Given this functional specialization of expression processing, it is plausible that these neurocognitive systems may also be dissociable pharmacologically. OBJECTIVE: The present study therefore compared the effects of diazepam (15 mg) with placebo upon the ability to recognize emotional expressions. METHODS: A double blind, independent group design was used to compare the effects of diazepam and matched placebo in 32 healthy volunteers. Participants were presented morphed facial expression stimuli following a paradigm developed for use with patients with brain damage and asked to name one of the six basic emotions (sadness, happiness, anger, disgust, fear and surprise). RESULTS: Diazepam selectively impaired subjects' ability to recognize angry expressions but did not affect recognition of any other emotional expression. CONCLUSIONS: The findings are interpreted as providing further support for the suggestion that there are dissociable systems responsible for processing emotional expressions. It is suggested that these findings may have implications for understanding paradoxical aggression sometimes elicited by benzodiazepines.

Adult↗
PubMed1999

The CAD triad hypothesis: a mapping between three moral emotions (contempt, anger, disgust) and three moral codes (community, autonomy, divinity).

It is proposed that 3 emotions--contempt, anger, and disgust--are typically elicited, across cultures, by violations of 3 moral codes proposed by R. A. Shweder and his colleagues (R. A. Shweder, N. C. Much, M. Mahapatra, & L. Park, 1997). The proposed alignment links anger to autonomy (individual rights violations), contempt to community (violation of communal codes including hierarchy), and disgust to divinity (violations of purity-sanctity). This is the CAD triad hypothesis. Students in the United States and Japan were presented with descriptions of situations that involve 1 of the types of moral violations and asked to assign either an appropriate facial expression (from a set of 6) or an appropriate word (contempt, anger, disgust, or their translations). Results generally supported the CAD triad hypothesis. Results were further confirmed by analysis of facial expressions actually made by Americans to the descriptions of these situations.

Culture↗
PubMed1996

Visceral perception, anhedonia, and emotion.

Few investigators have attempted to examine empirically the relationship between perception of autonomic arousal and emotional state. According to Jamesian theory, individuals who are more aware of their visceral activity should demonstrate greater affective response to emotion-laden stimuli than individuals who are not viscerally perceptive. Therefore, certain groups of 'unemotional' subjects, such as anhedonics, may report fewer or less intense emotional experiences due to an attenuation or lack of autonomic feedback. Results from studies by Katkin (Psychophysiology, 22, (1985) 125-137) suggest that there is a relationship between induced sympathetic arousal, the perception of that arousal, and the self-report of emotional experience. The present study sought to expand upon these findings by comparing visceral perception (i.e. heartbeat detection) performance and a multi-component assessment of emotion in normal and anhedonic subjects. No correlation was found between anhedonia and visceral perception; however, anhedonics were significantly different from normals across several measures of heart rate, self-report, and facial expressions in response to emotion-eliciting slides, with anhedonics consistently showing emotional hypo-responsiveness. Additionally, subjects who were able to perceive their own heartbeats were found to be more facially expressive than poor perceivers.

Adolescent↗
PubMed1998

A preliminary evaluation of emotional experience and expression following unilateral brain damage.

In this preliminary study, hemispheric specialization for the experience and expression of emotion was investigated. Subjects were right-brain-damaged (RBD), left-brain-damaged (LBD), and normal control (NC) right-handed adults, carefully matched on demographic and neurological variables. Facial expressions were videotaped while subjects described recollected emotional and nonemotional experiences. Expressions were later rated by trained judges for emotional intensity and category accuracy. To examine experience, subjects evaluated the intensity and accuracy with which they had produced their monologues. RBDs produced less intense facial expressions and reported less intense emotional experiences than LBDs and NCs. LBDs rated themselves as producing expressions with less accuracy than did RBDs and NCs. These findings are consistent with research that supports the right-hemisphere hypothesis for emotion. In addition, judges' ratings and subjects' self-reports of emotional intensity were positively correlated for normal but not for brain-damaged subjects.

Affect↗
PubMed2002

Mobius syndrome: a case report.

Mobius Syndrome is characterized by showing unilateral facial nerve palsy of the sixth and seventh nerves, lack of facial expression, inability to smile and to tightly close the right eyelids. In this report, a 7-year-old-boy with Mobius syndrome is presented. He had asymmetry of facial expression, anomalies of fingers and severe tooth decay. After dental treatment, the periodic re-care visits should be done according to the eruption pattern.

Child↗
PubMedDate not supplied

Development of behaviors in preterm infants: relation to sleeping and waking.

BACKGROUND: Although nurse clinicians and researchers use infant behaviors to indicate the responses of preterm infant to stimulation, little is known about how the biological factors of development, sleeping and waking states, infant characteristics, and infant illness severity affect preterm infant behaviors. OBJECTIVE: This study examined the development of eight infant behaviors over the preterm period and determined the relation of these behaviors to sleeping and waking and to infant characteristics and illness severity. METHODS: Seventy-one preterm infants were observed once per week from 7:00 p.m. to 11:00 p.m. from the time they were no longer critical until term or discharge. The occurrence of four sleep-wake states and eight behaviors were recorded every 10 seconds during the observations. RESULTS: Negative facial expressions increased over the preterm period; sighs, startle/jerks, jitters, and the likelihood of having hiccups decreased. Infant characteristics had only minor effects: boys had more negative facial expressions, and longer mechanical ventilation was associated with more sighs and jitters. All behaviors showed state-related differences in frequency. In addition, only startle/jerks and jitters showed the same developmental patterns within each state. CONCLUSIONS: Significant development of infant behaviors occurs over the preterm period but involves changes not only in the absolute percentage of each behavior but also in the percentages within each sleeping and waking state. Thus, preterm infant behaviors cannot be used clinically for assessment without consideration of the state in which they occur.

Activity Cycles↗
PubMed1995

[Reconstruction of chronic facial paralysis by free gracilis muscle transfer. Apropos of 59 cases].

Surgical repair of facial paralysis is designed to restore automatic and uniform facial expression. The authors report their experience of 64 patients with longstanding facial paralysis treated by revascularized and reinnervated gracilis muscle transfer. Reinnervation of the gracilis muscle was obtained by anastomosis of its motor nerve to the facial nerve on the healthy side following preliminary transfacial nerve graft. 59 patients were followed for 1 to 8 years; the mean duration of facial paralysis was 14 years in this series. The authors modified the gracilis muscle harvesting technique by decreasing the muscle mass to a minimum. Two complications were observed: one severe infection leading to thrombosis of the anastomosed vessels and one intraoperative technical difficulty concerning the nerve anastomosis. The results were considered to be good in 72% of cases and excellent in 5% of cases in terms of facial expression. However, good results were not obtained in muscle transfer for palpebral paralysis, in which the authors prefer to make the eyelid heavier by inserting a gold weight implant after modifying this technique to lower the rejection rate.

Adolescent↗
PubMed2004

[Development of visual function: a neurophysiological point of view].

Recent findings on the development of visual function in children are summarized. First, visual evoked potentials (VEPs) in normal school children, following two types of visual stimuli (pattern reversal and light emitting diode stimulation) by transient and steady-state stimulation, are presented. Reproducible VEPs with the 4 stimulation conditions can be obtained. Transient and steady-state methods provide complementary results. Second, mechanisms for photosensitive epilepsy (PSE) are discussed. We recorded flicker VEPs to different color combinations and quantified the effects of changes in color and luminance combinations. Two amplitude peaks (9 and 18 Hz) were observed for all kinds of isoluminant color combination stimuli against temporal frequency. In addition, this characteristic was modulated by luminance. Normal children showed much higher sensitivity to contrast changes and color combination compared with normal young adults, which may be responsible for PSE in childhood. Third, cognitive function for facial expression of normal children and adults is mentioned. For Chernoff's faces showing anger and sadness produced by computer, children showed higher scores compared with adults, suggesting higher sensitivity for facial expression. Knowledge of developmental changes in children allows us to understand the maturational and degenerative changes of the central nervous system.

Adult↗
PubMed2005

Disgust in pre-clinical Huntington's disease: a longitudinal study.

Emotion recognition from both face and voice and experience of emotions were investigated in a group of non-symptomatic people at risk of carrying the Huntington's disease gene who presented for genetic testing. Based on the results of the DNA test, a group of people carrying the Huntington's disease gene (HD+), and a group of non-carriers (HD-) were formed. Since we were especially interested in the time course of possible deficits in emotion recognition, all people at risk were reassessed 6 and 12 months after the initial assessment. Recognising facial expressions of disgust was significantly impaired on all three assessments in the HD+ group, while recognition of vocal emotions and the experience of emotions were largely unaffected, confirming that deficits in recognition of facial expressions of disgust are an early correlate of carrying the gene for Huntington's disease. The inclusion of a healthy control group (n = 37) further allowed an estimate of the genetic and environmental contribution to deficits in facial emotion recognition.

Adult↗
PubMed2004

Development and preliminary validation of the pain assessment checklist for seniors with limited ability to communicate (PACSLAC).

The purpose of this study, conducted in three phases, was to develop a clinically useful observational tool (i.e., the Pain Assessment Checklist for Seniors With Limited Ability to Communicate [PACSLAC]) to assess pain in seniors with severe dementia. In Phase 1, professional caregivers of seniors with severe dementia were interviewed in order to generate a list of pain-related behaviors that are characteristic of care recipients living in long-term-care facilities. Based on a systematic examination of interview transcripts by experienced researchers and an independent coder, a behavioral checklist (i.e., the initial version of the PACSLAC) was developed. The checklist items were organized into conceptually based subscales (e.g., facial expressions, activity/body movement). Phase 2 focused on an assessment of the internal consistency of the checklist (alpha =.92). Following an item analysis, the subscales of the PACSLAC (Social/Personality/Mood Indicators, Facial Expressions, Activity/Body Movement, and Physiological Indicators/Eating/Sleeping Changes/Vocal Behaviors) were found to be internally consistent. Phase 3 focused on a preliminary validation of the PACSLAC. Analyses suggest that the PACSLAC discriminated among pain events (during which there was a clear and recognizable cause for the patients' pain), events during which patients were experiencing nonpainful distress, and situations during which patients were calm.

Adult↗
PubMed1992

Mirrors as enrichment for captive chimpanzees (Pan troglodytes).

At many facilities, limitations of the physical environment have reduced the opportunity for captive chimpanzees to live in large, naturalistic social groups. Convex mirrors used to increase visual access of neighboring groups may improve the social environment. This was tested in a study of 28 chimpanzees (Pan troglodytes) group-housed in conventional indoor/outdoor runs. A total of 47.8 hours of behavioral observations were conducted and comparisons made across three conditions: no mirror present, a mirror present with visual access to neighboring conspecifics, or a mirror present with visual access to the neighbors' empty run. When the mirror gave subjects visual access to neighboring animals, facial expressions, sexual, and agonistic behaviors increased, whereas affiliative behavior decreased compared with when no mirror was present. When the mirror gave subjects visual access to a neighbors' empty run, facial expressions and sexual behavior increased compared with when no mirror was present. When the mirror gave subjects visual access to a neighbor's empty run, agonism decreased compared with when a mirror gave subjects visual access to neighboring animals. When subjects had visual access to neighbors, they used the mirror 30% of the total data points; while they had visual access to the neighbors' empty run, they looked during 24% of the total data points. Juveniles' use of the mirror increased over time while adults' use remained stable. Adult males used the mirror less than did the other subjects. These findings indicate that a mirror allowing visual access to neighboring conspecifics has potential as an enrichment device that affects social behavior.

Age Factors↗
PubMed2005

Stimulus type and design influence hemodynamic responses towards visual disgust and fear elicitors.

The question to what extent emotion-related brain activation depends upon the presentation design (block design vs. event-related design) and the stimulus type (scene pictures vs. pictures with facial mimic) has hardly been addressed in previous functional magnetic resonance imaging (fMRI) research. In the present fMRI experiment, 40 right-handed subjects viewed pictures with fear-inducing and disgust-inducing content as well as facial expressions of fear and disgust. Pictures of neutral objects and neutral facial mimic were used as control stimuli. The pictures were presented in a block design for half of the subjects; the other half viewed the same stimuli as singular events in randomized sequence. The participants had been instructed to passively view the pictures. Disgust-evoking scenes provoked activation in the amygdala, the insula and the orbitofrontal cortex (OFC). This applied to the blocked as well as to the event-related design. Fear-relevant scenes were associated with activity in the insula, the OFC and the middle temporal gyri in the event-related design. The presentation in a block design only led to activation in the middle temporal gyri. Facial expressions of disgust and fear did not trigger significant activation neither in the blocked nor event-related design. This surprising outcome may be a result of context and task effects. The face stimuli which were presented together with the more complex scenes in a passive viewing paradigm possibly were not salient enough to trigger emotional processing.

Adult↗