Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 106
Filtrar
1.
Scand J Gastroenterol ; 57(9): 1138-1146, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35450506

RESUMO

BACKGROUND: Colonoscopy proficiency is significantly influenced by skills achieved during training. Although assessment scores exist, they do not evaluate the impact of visual search strategies and their use is time and labour intensive. Eye-tracking has shown significant differences in visual gaze patterns (VGPs) between expert endoscopists with varying polyp detection rates, so may provide a means of automated assessment and guidance for trainees. This study aimed to assess the feasibility of eye-tracking as a novel assessment method for trainee endoscopists. METHODS: Eye-tracking glasses were used to record 26 colonoscopies from 12 endoscopy trainees who were assessed with directly observed procedural scores (DOPS), devised by the Joint Advisory Group (JAG) on GI endoscopy, and a visual analogue score of overall competence. A 'total weighted procedure score' (TWPS) was calculated from 1 to 20. Primary outcomes of fixation duration (FixD) and fixation frequency (FixF) were analysed according to areas of interest (AOIs) with the bowel surface and lumen represented by three concentric rings. Correlation was assessed using Pearson's coefficient. Significance was set at p<.050. RESULTS: Trainees displayed a significant positive correlation between TWPS and FixD (R = 0.943, p<.0001) and FixF (R = 0.936, p<.0001) in the anatomical bowel mucosa peripheries. Conversely, they had significant negative correlations between TWPS and the anatomical bowel lumen (FixD: R= -0.546, p=.004; FixF: R= -0.568, p=.002). CONCLUSIONS: Higher objective performance scores were associated with VGPs focussing on bowel mucosa. This is consistent with prior analysis showing peripheral VGPs correspond with higher polyp detection rates. Analysis of VGPs, therefore, has potential for training and assessment in colonoscopy.


Assuntos
Pólipos do Colo , Colonoscopia , Gastroenterologistas , Mucosa Intestinal , Competência Clínica , Pólipos do Colo/diagnóstico por imagem , Colonoscopia/métodos , Medições dos Movimentos Oculares , Gastroenterologistas/educação , Humanos
2.
Muscle Nerve ; 64(3): 328-335, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34131928

RESUMO

INTRODUCTION/AIMS: Videonystagmography (VNG) which directly records eye movements using infrared video goggles with mini-cameras, is used to measure nystagmus. Our aim is to explore whether VNG can be used to detect a decrement in the extraocular muscle (EOM) activity of patients with myasthenia gravis (MG). METHODS: Thirty-four patients with MG, including 13 with ocular-predominant and 21 with generalized MG, and 23 healthy controls participated. Using VNG we recorded the velocity of the eye movements of the patients as they followed a moving target. We then calculated the gain by dividing the eye movement velocity (degrees/second) by the target velocity (degrees/second). RESULTS: In MG subjects, the mean initial gain (maximum gain) was 1.23 ± 0.31 (range: 0.63-2.15) for the right eye and 1.22 ± 0.37 (range; 0.60-2.28) for the left eye. The mean minimum gain was 0.11 ± 0.12 (0.01-0.58) for the right and 0.14 ± 0.5 (0.02-0.55) for the left. Due to fatigue, the movement gain was reduced by 91.7% in the right eye and 88.2% in the left eye. After reaching minimum velocity, gain remained at a minimum for a mean of 1.08 ± 0.52 (0.3-2.4) s for the right and 1.49 ± 0.85 (0.4-3.6) s for the left, before the velocity increased again. There was no fatigue-induced decrement in healthy subjects. DISCUSSION: Our study documents a decrement in EOM activity recorded by VNG in patients with MG which begins to improve within 1-2 s after reaching minimum velocity, analogous to traditional low-frequency repetitive nerve stimulation testing and its U-shaped pattern. Thus, VNG may be a promising diagnostic test for MG.


Assuntos
Medições dos Movimentos Oculares , Movimentos Oculares/fisiologia , Miastenia Gravis/diagnóstico , Músculos Oculomotores/fisiopatologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Miastenia Gravis/fisiopatologia , Adulto Jovem
3.
Behav Res Methods ; 53(5): 1986-2006, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-33709298

RESUMO

The pupil size artefact (PSA) is the gaze deviation reported by an eye tracker during pupil size changes if the eye does not rotate. In the present study, we ask three questions: 1) how stable is the PSA over time, 2) does the PSA depend on properties of the eye tracker set up, and 3) does the PSA depend on the participants' viewing direction? We found that the PSA is very stable over time for periods as long as 1 year, but may differ between participants. When comparing the magnitude of the PSA between eye trackers, we found the magnitude of the obtained PSA to be related to the direction of the eye-tracker-camera axis, suggesting that the angle between the participants' viewing direction and the camera axis affects the PSA. We then investigated the PSA as a function of the participants' viewing direction. The PSA was non-zero for viewing direction 0∘ and depended on the viewing direction. These findings corroborate the suggestion by Choe et al. (Vision Research 118(6755):48-59, 2016), that the PSA can be described by an idiosyncratic and a viewing direction-dependent component. Based on a simulation, we cannot claim that the viewing direction-dependent component of the PSA is caused by the optics of the cornea.


Assuntos
Artefatos , Pupila , Medições dos Movimentos Oculares , Movimentos Oculares , Humanos
4.
Thyroid ; 31(2): 280-287, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-32940167

RESUMO

Background: The overall changes of ocular motility in Graves' orbitopathy (GO) are not easily quantifiable with the methods currently available, especially in clinical studies. The aim of the present study was to calculate parameters that quantify the changes of ocular motility in GO in relation to the Gorman score for diplopia. Methods: We studied 100 GO patients (Group 1) and 100 controls (Group 2). We also included 30 patients treated with intravenous methylprednisolone (iv-MP), assessed at baseline and after 12 and 24 weeks (Group 3), and 66 patients submitted to squint surgery, assessed at baseline and after 12 weeks (Group 4). Ocular ductions were measured in four gaze directions by a perimeter arc and were used to calculate a total motility score (TMS) as the sum of ductions in each direction; a biocular TMS (b-TMS) as the sum of the TMS of two eyes; and an asymmetry ratio (AR) as the sum of the differences of the corresponding ductions between the two fellow eyes divided by the mean difference found in controls. Quality of life was accessed by a specific questionnaire (Graves' orbitopathy quality of life [GO-QoL] questionnaire). Results: TMS and b-TMS were lower, while AR was higher, in Group 1 compared with controls (p < 0.001). In Group 1, TMS and b-TMS were inversely correlated with the Gorman score (p < 0.001) and AR was higher in patients with constant diplopia compared with the others (p < 0.001). In Group 3, TMS and b-TMS increased after treatment in responders to iv-MP (p < 0.001). In Group 4, TMS and b-TMS improved in all patients after surgery (p < 0.01), while AR and GO-QoL score improved only in those without residual constant diplopia (p < 0.001). Conclusion: We describe a quantitative method to assess eye motility dysfunction in any stage of GO to be used as an outcome measure in clinical studies.


Assuntos
Diplopia/diagnóstico , Medições dos Movimentos Oculares , Movimentos Oculares , Oftalmopatia de Graves/diagnóstico , Músculos Oculomotores/fisiopatologia , Administração Intravenosa , Adulto , Idoso , Idoso de 80 Anos ou mais , Diplopia/tratamento farmacológico , Diplopia/fisiopatologia , Movimentos Oculares/efeitos dos fármacos , Feminino , Glucocorticoides/administração & dosagem , Oftalmopatia de Graves/tratamento farmacológico , Oftalmopatia de Graves/fisiopatologia , Humanos , Masculino , Metilprednisolona/administração & dosagem , Pessoa de Meia-Idade , Músculos Oculomotores/efeitos dos fármacos , Valor Preditivo dos Testes , Qualidade de Vida , Estudos Retrospectivos , Índice de Gravidade de Doença , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
5.
Alcohol Alcohol ; 56(1): 47-56, 2021 Jan 04.
Artigo em Inglês | MEDLINE | ID: mdl-32984874

RESUMO

AIMS: Previous studies have shown that there may be an underlying mechanism that is common for co-use of alcohol and tobacco and it has been shown that treatment for alcohol use disorder can increase rates of smoking cessation. The primary aim of this study was to assess a novel methodological approach to test a simultaneous behavioral alcohol-smoking cue reactivity (CR) paradigm in people who drink alcohol and smoke cigarettes. METHODS: This was a human laboratory study that utilized a novel laboratory procedure with individuals who drink heavily (≥15 drinks/week for men; ≥8 drinks/week for women) and smoke (>5 cigarettes/day). Participants completed a CR in a bar laboratory and an eye-tracking (ET) session using their preferred alcohol beverage, cigarettes brand and water. RESULTS: In both the CR and ET session, there was a difference in time spent interacting with alcohol and cigarettes as compared to water (P's < 0.001), but no difference in time spent interacting between alcohol and cigarettes (P > 0.05). In the CR sessions, craving for cigarettes was significantly greater than craving for alcohol (P < 0.001), however, only time spent with alcohol, but not with cigarettes, was correlated with craving for both alcohol and cigarettes (P < 0.05). CONCLUSION: This study showed that it is feasible to use simultaneous cues during a CR procedure in a bar laboratory paradigm. The attention bias measured in the integrated alcohol-cigarettes ET procedure predicted participants' decision making in the CR. This novel methodological approach revealed that in people who drink heavily and smoke, alcohol cues may affect craving for both alcohol and cigarettes.


Assuntos
Consumo de Bebidas Alcoólicas/psicologia , Alcoolismo/psicologia , Fumar Cigarros/psicologia , Fissura , Sinais (Psicologia) , Adulto , Medições dos Movimentos Oculares , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
6.
J Neonatal Perinatal Med ; 13(4): 587-591, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32651337

RESUMO

Joubert syndrome is a rare neurological manifestation usually present in late infancy or early childhood with characteristic episodes of abnormal breathing pattern along with the neurological and other systemic involvement.We report a case of confirmed Joubert syndrome present in the immediate neonatal period with isolated spells of oxygen desaturations not accompanied by the classically described breathing pattern and absent neurological symptoms causing delay in the diagnosis. Isolated oxygen desaturation episodes could be a presenting manifestation of Joubert syndrome in a neonatal period.


Assuntos
Anormalidades Múltiplas , Encéfalo/diagnóstico por imagem , Cerebelo/anormalidades , Anormalidades do Olho , Hipóxia/diagnóstico , Doenças Renais Císticas , Retina/anormalidades , Taquipneia/diagnóstico , Anormalidades Múltiplas/diagnóstico , Anormalidades Múltiplas/fisiopatologia , Anormalidades Múltiplas/psicologia , Análise de Variância , Cerebelo/fisiopatologia , Deficiências do Desenvolvimento/diagnóstico , Deficiências do Desenvolvimento/fisiopatologia , Deficiências do Desenvolvimento/psicologia , Diagnóstico Diferencial , Anormalidades do Olho/diagnóstico , Anormalidades do Olho/fisiopatologia , Anormalidades do Olho/psicologia , Medições dos Movimentos Oculares , Humanos , Recém-Nascido , Doenças Renais Císticas/diagnóstico , Doenças Renais Císticas/fisiopatologia , Doenças Renais Císticas/psicologia , Masculino , Exame Neurológico/métodos , Prognóstico , Retina/fisiopatologia , Índice de Gravidade de Doença , Avaliação de Sintomas/métodos
7.
Medisan ; 24(3)mayo.-jun. 2020. ilus
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1125129

RESUMO

El análisis de los movimientos oculares permite diagnosticar enfermedades neurodegenerativas, neuropsiquiátricas y neurooftalmológicas, entre otras, que afectan el desempeño social del individuo. En este análisis ha tomado auge mundial el empleo de la videoculografía, por su simplicidad estructural, exactitud y factibilidad económica a largo plazo. Al respecto, el objetivo de la actual investigación fue desarrollar y evaluar un sistema de estimulación visual y registro de los movimientos oculares. El sistema en cuestión permitió obtener imágenes oculares con buena resolución (2 megapíxeles), nitidez y contraste que facilitaron su posterior procesamiento. De igual modo, las pruebas de estimulación mediante el uso de patrones sacádicos con amplitudes entre 30º y 60º a la frecuencia de 0,5 Hz permitieron obtener con suficiente calidad las imágenes registradas y verificar que los movimientos oculares del centro de la pupila siguen fielmente a dichos patrones.


The analysis of eye movements allows to diagnose neurodegenerative, neuropsychiatric and neuroophthalmologic diseases, among other that affect the individual social performance. In this analysis the use of videoculography is gaining in importance worldwide, due to its structural simplicity, precision and long term economic feasibility. In this respect, the objective of this investigation was to develop and evaluate a system of visual stimulation and record of the eye movements. The system in question allowed to obtain ocular images with good resolution (2 megapixels), clarity and contrast that facilitated its later processing. In a same way, the tests of stimulation by means of the sacadic patterns use with amplitudes between 30º and 60º to the 0,5Hz frequency allowed to obtain with enough quality the images recorded and to verify that the eye movements of the pupil center follow these patterns very closely.


Assuntos
Processamento de Imagem Assistida por Computador , Medições dos Movimentos Oculares , Espectrofotometria Infravermelho
8.
J Exp Psychol Learn Mem Cogn ; 46(4): 638-648, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31343250

RESUMO

Mind-wandering (i.e., thoughts irrelevant to the current task) occurs frequently during reading. The current study examined whether mind-wandering was associated with reduced rereading when the reader read the so-called garden-path jokes. In a garden-path joke, the reader's initial interpretation is violated by the final punchline, and the violation creates a semantic incongruity that needs to be resolved (e.g., "My girlfriend has read so many negative things about smoking. Therefore, she decided to quit reading."). Rereading text prior to the punchline can help resolve the incongruity. In a main study and a preregistered replication, participants read jokes and nonfunny controls embedded in filler texts and responded to thought probes that assessed intentional and unintentional mind-wandering. Results were consistent across the two studies: When the reader was not mind-wandering, jokes elicited more rereading (from the punchline) than the nonfunny controls did, and had a recall advantage over the nonfunny controls. During mind-wandering, however, the additional eye movement processing and the recall advantage of jokes were generally reduced. These results show that mind-wandering is associated with reduced rereading, which is important for resolving higher level comprehension difficulties. (PsycInfo Database Record (c) 2020 APA, all rights reserved).


Assuntos
Atenção/fisiologia , Compreensão/fisiologia , Reconhecimento Visual de Modelos/fisiologia , Leitura , Pensamento/fisiologia , Senso de Humor e Humor como Assunto , Adolescente , Adulto , Medições dos Movimentos Oculares , Feminino , Humanos , Masculino , Adulto Jovem
10.
Plast Reconstr Surg ; 144(6): 1257-1266, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31764626

RESUMO

BACKGROUND: Because of its subjective character, the term "breast attractiveness" is poorly defined and thus its reliable standardized assessment can be particularly challenging. Because of objective analysis of the observer's gaze pattern, eye-tracking technology may provide a better insight into the visual perception of breast aesthetics and symmetry. METHODS: One hundred observers, 50 women and 50 men, assessed the aesthetics and symmetry of eight types of female breasts displayed as digital images on frontal, lateral, and oblique projections. The gaze pattern of each observer was recorded using eye-tracking technology, and gaze data were subsequently analyzed. RESULTS: Although sex and breast type exerted an effect on attention capturing by some areas of interest, key characteristics of gaze patterns in female and male observers were essentially the same. Irrespective of observers' sex, the longest fixation duration and the highest fixation number were recorded for lower breast regions, in particular, for the nipple-areola complex. Mean fixation duration in this area corresponded to 58 and 57 percent of overall observation time for female and male observers, respectively, during the assessment of breast aesthetics; and to 56 and 52 percent of overall observation time for female and male observers, respectively, during the assessment of breast symmetry. CONCLUSIONS: Nipple-areola complex and lower breast are key focus areas for the assessment of breast aesthetics and symmetry. Gaze data collected during this study may constitute a valuable source of reference values for future eye-tracking research on various patient groups' visual perception of breast attractiveness and deformities.


Assuntos
Mama , Estética , Percepção Visual/fisiologia , Adulto , Medições dos Movimentos Oculares , Movimentos Oculares/fisiologia , Feminino , Fixação Ocular/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Caracteres Sexuais , Adulto Jovem
11.
J Adolesc Health ; 65(6): 769-775, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31668454

RESUMO

PURPOSE: Adolescents are often a target audience for disgust-eliciting antismoking messages, including graphic warning labels (GWLs) on cigarette packages. Yet, few studies have examined how adolescents attend and respond to disgust imagery frequently depicted in these messages. METHODS: A within-subjects eye-tracking experiment with middle school youth (N = 436) examined attention for GWLs that feature disgust versus nondisgust images. Hypotheses were based on emotion theory and previous findings with adult participants. This study also tested whether living with a smoker moderated effects of attention on negative emotions and risk beliefs. RESULTS: Participants paid similar levels of attention to warnings with disgust visuals as they did warnings with nondisgust visuals, accounting for other differences in the warnings. The presence of a disgust visual drew greater attention to the warning image and reduced attention for the warning text. These viewing patterns were similar for youth who live with a smoker and those who do not. Attention to disgust imagery was the only attentional factor to predict negative emotional reactions, and this relationship was driven by results observed among youth who live with a smoker. Attention to neither image nor text predicted risk beliefs. CONCLUSIONS: GWLs with disgust imagery do not trigger more or less attention to the overall warnings but do influence allocation of attention to images over text. Future work should confirm whether attention to disgust imagery itself is important for triggering negative emotional responses, particularly with youth for whom the message is more personally relevant.


Assuntos
Atenção , Asco , Medições dos Movimentos Oculares , Rotulagem de Produtos/estatística & dados numéricos , Adolescente , Criança , Feminino , Humanos , Masculino , Fatores de Risco , Fumantes , Estudantes/estatística & dados numéricos , Produtos do Tabaco
13.
Trends psychiatry psychother. (Impr.) ; 41(4): 334-339, Oct.-Dez. 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1059185

RESUMO

Abstract Introduction Few studies have used eye tracking as a screening tool for autism spectrum disorder (ASD) in preterm infants. Objectives To evaluate fixation time on social and non-social figures and percentage of preterm babies who gazed at the images. Methods This was a cross-sectional study of 31 preterm infants born weighing ≤ 2,000 g in which eye gaze was evaluated at 6 months of corrected age. Six boards with social and non-social figures were projected on a computer screen, successively, evaluating time and percentage of preterm babies who gazed at each board. The Modified Checklist for Autism in Toddlers (M-CHAT) was answered at 18 months of corrected age. Results Preterm infants showed longer visual fixation time on social figures compared with non-social images, regardless of the position of the social figure on the board. Similar percentages of preterm infants gazed either at social or non-social figures, at social figures with a direct or an indirect look, and at the eyes or mouth of the social figures. No preterm infant screened positive on the M-CHAT. Conclusion At 6 months of corrected age, preterm infants show the ability to gaze in an eye-tracking test, with preference for social figures, suggesting that this tool could be useful as another screening instrument for ASD.


Resumo Introdução Poucos estudos utilizaram a varredura visual como ferramenta para rastreamento de transtorno do espectro do autismo (TEA) em bebês prematuros. Objetivos Avaliar bebês prematuros quanto ao o tempo de fixação de olhar em figuras sociais e não sociais e a porcentagem deles que olharam para as imagens. Métodos Este estudo transversal incluiu 31 bebês prematuros com ≤ 2.000 g ao nascer, cujo rastreamento visual foi avaliado aos 6 meses de idade corrigida. Seis pranchas com figuras sociais e não sociais foram projetadas em tela de computador, sucessivamente, avaliando-se o tempo e porcentagem de prematuros que olharam para cada prancha. O Modified Checklist for Autism in Toddlers (M-CHAT) foi respondido aos 18 meses de idade corrigida. Resultados Os bebês prematuros apresentaram maior tempo de fixação visual em figuras sociais do que não sociais, independentemente da posição da figura social na prancha. Porcentagens similares de prematuros olharam tanto para figuras sociais como para não sociais, para figuras sociais com olhar direto ou indireto, e para boca ou olhos das figuras sociais. Nenhum prematuro foi rastreado positivamente pelo M-CHAT. Conclusão Aos 6 meses de idade corrigida, prematuros apresentaram habilidade para varredura em teste de rastreamento visual, com preferência por figuras sociais, sugerindo que esta ferramenta pode ser útil como mais um instrumento para rastreamento de TEA.


Assuntos
Humanos , Masculino , Feminino , Lactente , Adulto , Transtornos da Visão/diagnóstico , Testes Visuais/métodos , Recém-Nascido de Baixo Peso , Recém-Nascido Prematuro , Estudos Transversais , Medições dos Movimentos Oculares , Lista de Checagem , Transtorno do Espectro Autista/diagnóstico
14.
Mem. Inst. Invest. Cienc. Salud (Impr.) ; 17(2): 107-111, ago. 2019. ilus
Artigo em Espanhol | LILACS, BDNPAR | ID: biblio-1008961

RESUMO

Los meningiomas de nervio óptico y de seno cavernoso son patologías poco frecuentes, y hasta el momento no ha habido ningún reporte de que se presenten ambos en un mismo paciente. Cabe resaltar que cuando llega un paciente a consulta diagnosticado con alguna patología, asumimos que este diagnóstico es adecuado y pertinente. Pero en nuestro caso, el paciente presentó signos y síntomas de etiología desconocida que hicieron que se re-evaluarán los diagnósticos oftalmológicos que traía la paciente, encontrando que había sido tratada por un diagnóstico que no le correspondía y a su vez este hallazgo nos ayudó a encontrar la verdadera causa(AU)


Optic nerve and cavernous sinus meningiomas are uncommon pathologies, and so far there have not been previously reported to occur in the same patient. It should be emphasized that when a patient arrives at a doctor's office diagnosed with pathology, we assume that this diagnosis is appropriate and pertinent. But in our case, the patient presented signs and symptoms of unknown etiology that led to a re-evaluation of the previous ophthalmological diagnoses that the patient brought, finding that she had been treated for a diagnosis that did not match with all her clinical sign and symptoms and this helped us to find the real cause(AU)


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Seio Cavernoso/patologia , Neoplasias do Nervo Óptico/diagnóstico , Meningioma/diagnóstico , Nervo Óptico/diagnóstico por imagem , Seio Cavernoso/diagnóstico por imagem , Medições dos Movimentos Oculares , Fundo de Olho
15.
Plast Reconstr Surg ; 144(1): 63-70, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31246802

RESUMO

BACKGROUND: Aesthetics plays a central role in determining success in plastic surgery. Understanding perceptions of favorable aesthetics is critical to ensure patient satisfaction. Eye-tracking technology offers an objective way of evaluating attention and understanding how viewers direct their focus on patients who undergo cosmetic face-lift procedures. METHODS: Thirty-six subjects ranging from layperson to attending plastic surgeon viewed 15 sets of photographs before and after patients underwent an elective face-lift procedure. They were instructed to evaluate the aesthetic quality on a Likert scale while eye-tracking equipment tracked their gaze and analyzed their distribution of attention. RESULTS: Postoperative images showed a Likert score improvement of 0.51 ± 0.26, with the greatest difference in attending cosmetic plastic surgeons (1.36 ± 0.22; p < 0.05). The nose was the most common first fixation location (31 percent of first fixations) and the most viewed area (16 ± 3 percent of fixation time) for all subjects. Experienced subjects spent less time in nonrelevant areas (30 ± 11 percent for attending cosmetic plastic surgeons and 37 ± 10 percent for attending noncosmetic plastic surgeons) compared with less experienced subjects (50 ± 15 percent for laypersons). CONCLUSIONS: This study demonstrates that viewers with greater experience in cosmetic surgery focus quickly on the cheeks, chin, and neck and have evenly distributed gaze across the entire face. These results suggest that a layperson's gaze is drawn to the center of the face (because of both unfamiliarity with the face-lift procedure and the natural tendency to look at the central face), whereas attending plastic surgeons exhibit holistic gaze patterns and are more aware of the impact of the procedure.


Assuntos
Estética , Fixação Ocular/fisiologia , Ritidoplastia/psicologia , Medições dos Movimentos Oculares/instrumentação , Movimentos Oculares/fisiologia , Humanos , Satisfação Pessoal , Cuidados Pós-Operatórios
16.
Neuroimage Clin ; 23: 101886, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31254938

RESUMO

Facial emotion recognition (FER) deficits are evident and pervasive across neurodevelopmental, psychiatric, and acquired brain disorders in children, including children treated for brain tumours. Such deficits are thought to perpetuate challenges with social relationships and decrease quality of life. The present study combined eye-tracking, neuroimaging and cognitive assessments to evaluate if visual attention, brain structure, and general cognitive function contribute to FER in children treated for posterior fossa (PF) tumours (patients: n = 36) and typically developing children (controls: n = 18). To assess FER, all participants completed the Diagnostic Analysis of Nonverbal Accuracy (DANVA2), a computerized task that measures FER using photographs, while their eye-movements were recorded. Patients made more FER errors than controls (p < .01). Although we detected subtle deficits in visual attention and general cognitive function in patients, we found no associations with FER. Compared to controls, patients had evidence of white matter (WM) damage, (i.e., lower fractional anisotropy [FA] and higher radial diffusivity [RD]), in multiple regions throughout the brain (all p < .05), but not in specific WM tracts associated with FER. Despite the distributed WM differences between groups, WM predicted FER in controls only. In patients, factors associated with their disease and treatment predicted FER. Our study provides insight into predictors of FER that may be unique to children treated for PF tumours, and highlights a divergence in associations between brain structure and behavioural outcomes in clinical and typically developing populations; a concept that may be broadly applicable to other neurodevelopmental and clinical populations that experience FER deficits.


Assuntos
Desenvolvimento do Adolescente/fisiologia , Desenvolvimento Infantil/fisiologia , Emoções/fisiologia , Expressão Facial , Reconhecimento Facial/fisiologia , Neoplasias Infratentoriais/patologia , Neoplasias Infratentoriais/fisiopatologia , Substância Branca/patologia , Adolescente , Criança , Imagem de Tensor de Difusão , Medições dos Movimentos Oculares , Feminino , Humanos , Neoplasias Infratentoriais/diagnóstico por imagem , Masculino , Testes Neuropsicológicos , Substância Branca/diagnóstico por imagem
17.
Med Sci Monit ; 25: 3127-3132, 2019 Apr 28.
Artigo em Inglês | MEDLINE | ID: mdl-31030208

RESUMO

BACKGROUND Distracting interference cognitive tasks place undeniable pressure on the minds of people who need high precision and attention during the tasks, such as those tasks performed during surgery; these tasks might affect current surgical procedures. We measured the effect of additional cognitive tasks on the mental load of the physician by measuring the mean change in pupil size, blink rate, and subjective assessment during surgery. MATERIAL AND METHODS We recruited 24 participants with different levels of laparoscopic surgery to perform a complete appendectomy using a standardized virtual reality laparoscopic surgery simulator. The participants then performed the cognitive task (arithmetic problem), after that they performed an appendectomy surgery task while completing the cognitive task on the simulator. All participants wore trackers to monitor pupil size and blink rate during surgery and the cognitive task. The National Aeronautics and Space Administration (NASA) Task Load Index (TLX) score also recorded performance parameters during the surgical mission. RESULTS The double-task pupil size and the blink rate were significantly increased compared to the single-task observation, and the associated increase in psychological load might have been affected by surgical performance, and the performance parameters were also statistically significant. However, for the aforementioned parameters, experienced surgeons had some differences compared with inexperienced surgeons, but these differences did not reach statistical significance. CONCLUSIONS Distracted cognitive task stimulation in the operating room can increase the surgeon's psychological burden while also affecting their operational skills, thereby threatening patient safety; reduced cognitive costs might be obtained by improving or managing cognitive deficits.


Assuntos
Atenção/fisiologia , Médicos/psicologia , Análise e Desempenho de Tarefas , Adulto , Competência Clínica , Simulação por Computador , Medições dos Movimentos Oculares , Feminino , Humanos , Laparoscopia/métodos , Masculino , Carga de Trabalho/psicologia
19.
Ann Plast Surg ; 82(5S Suppl 4): S313-S319, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30882421

RESUMO

BACKGROUND: Cleft lip repair is essential to restoring physiologic function and ensuring social and psychological well-being in children with orofacial clefts. It is important to critically study various techniques to understand the elements of the lip and nasal repair that contribute to favorable results. Here, we use eye-tracking technology to evaluate how viewers analyze images of cleft lips repaired by the Fisher, Millard, or Mohler techniques. METHODS: Thirty viewers were shown 5 images without deformity and 5 images each of unilateral cleft lips repaired by the Fisher, Millard, or Mohler techniques. Viewers assessed the esthetic quality of images on a Likert scale while eye-tracking technology analyzed their gaze patterns. RESULTS: Of the 3 repair techniques, viewers found Fisher repairs most esthetically pleasing (mean ± standard error, 6.91 ± 0.13). Mohler repairs were next most attractive at (6.47 ± 0.13), followed by Millard repairs at (5.60 ± 0.14). The proportion of time spent in fixed gaze on the nose and upper lip was greatest for Millard repairs (58.3% ± 0.4%) and least for Fisher repairs (51.9% ± 0.5%). Viewers fixated most frequently on the nose and upper lip in Millard repairs (83.2% ± 0.5%) and least frequently in Fisher repairs (75.3% ± 0.5%). When examining the Millard compared with Fisher and Mohler repairs, viewers spent more time and fixations on the ipsilateral lip, nose, and repair scar than on the contralateral lip. CONCLUSIONS: The esthetics of the Fisher repair appear to be favored as measured by Likert scores and gaze data. Eye-tracking technology may be a useful tool to assess outcomes in plastic surgery.


Assuntos
Fenda Labial/cirurgia , Medições dos Movimentos Oculares , Procedimentos de Cirurgia Plástica/métodos , Criança , Pré-Escolar , Estética , Humanos , Resultado do Tratamento
20.
J Plast Reconstr Aesthet Surg ; 72(6): 982-989, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30598394

RESUMO

BACKGROUND: Limited data are available regarding observers' visual attention to faces with congenital difference. We implemented eye tracking technology to examine this issue, as it pertains particularly to faces with cleft deformity. METHOD: Four hundred three observers assessed 273 clinical images, while their eye movements were unobtrusively tracked using an infrared sensor. Forty-one facial images of the repaired cleft lip, 137 images of other facial conditions, and 95 images of matched controls were assessed. Twenty facial regions of interest ("lookzones") were considered for all images observed. A separate cohort of 720 raters evaluated the images for attractiveness. Observer and image demographic information was collected. Visual fixation counts and durations were computed across all 20 lookzones for all images. The effect of a variety of variables on lookzone fixation was analyzed using factorial ANOVA testing. RESULTS: Cleft-repaired faces were rated as less attractive and drew observers' attention preferentially to the affected upper lip lookzone (p<.001). Images rated as less attractive garnered greater visual attention in the cleft-affected lookzones (p<.001). The eye tracking methodology demonstrated exquisite sensitivity to laterality of cleft deformity (p<.001). Individuals reporting a personal or a family history of facial deformity fixated more on the perioral region of cleft-repaired faces than did naïve observers (p<.001). CONCLUSION: These findings highlight the utility of eye tracking measures for understanding critical variables that influence the visual processing of faces with cleft deformity. The data may provide analytical tools for assessing surgical outcome and direct priority setting during surgeons' conversations with patients.


Assuntos
Fissura Palatina/cirurgia , Assimetria Facial , Procedimentos de Cirurgia Plástica/efeitos adversos , Complicações Pós-Operatórias , Adolescente , Criança , Desenho Assistido por Computador , Medições dos Movimentos Oculares/psicologia , Medições dos Movimentos Oculares/estatística & dados numéricos , Assimetria Facial/diagnóstico , Assimetria Facial/etiologia , Assimetria Facial/psicologia , Reconhecimento Facial , Feminino , Humanos , Masculino , Avaliação de Resultados em Cuidados de Saúde , Estimulação Luminosa/métodos , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/psicologia , Procedimentos de Cirurgia Plástica/métodos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA