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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

A visual scanpath study of facial affect recognition in schizotypy and social anxiety

Meyer, Eric C. January 2005 (has links)
Thesis (Ph. D.)--State University of New York at Binghamton, Psychology Dept., 2005. / Includes bibliographical references.
12

A Method for Synthesis of Three Dimensional Head with Single 2D Image

Yu, Yingfeng January 2005 (has links)
1 volume
13

Sistematización morfo-funcional del complejo motor facial del perro. Análisis de las neuronas de origen de los ramos periféricos del nervio facial, identificadas por transporte axónico retrógrado de peroxidasa.

Prats Galino, Alberto 27 April 1987 (has links)
El núcleo o complejo motor del nervio facial es un centro nervioso situado entre el bulbo raquídeo y la protuberancia, en la vecindad de la superficie ventrolateral troncoencefálica. Esta masa celular inerva la musculatura derivada del segundo arco branquial (arco hioideo), que comprende la totalidad de músculos faciales superficiales y ciertos músculos faciales profundos. Las fibras branquiomotoras faciales, después de un complicado trayecto intraencefálico e intrapetroso, emergen del cráneo por el orificio estilomastoideo, distribuyéndose periféricamente a través de seis ramos principales: ramos auriculares anterior y posterior, ramo cigomático, ramos bucolabiales superior e inferior y ramo cervical. Por otra parte, en preparaciones histológicas teñidas según el método de Nissl, se ha descrito una subdivisión citoarquitectónica del núcleo facial en cinco o seis columnas celulares longitudinales. La correlación que existe en el perro entre los ramos periféricos del nervio facial y las subdivisiones de su núcleo de origen ha sido analizada exclusivamente mediante la aplicación de métodos degenerativos retrógrados. Sin embargo, se han propuesto diferentes patrones de organización funcional del núcleo motor facial como consecuencia de la dificultad que presenta la interpretación de cambios cromatolíticos moderados secundarios a la axotomía. La topografía exacta de los somas de origen de los ramos periféricos del VII par, a nivel de este complejo nuclear, ha sido establecida en la presente tesis doctoral aplicando selectivamente la enzima peroxidasa en el extremo proximal de cada uno de los mismos, empleándose para dicho estudio un total de 43 perros jóvenes, de 2 a 18 semanas de edad, de ambos sexos, y con pesos comprendidos entre 450 y 7230 gr. Asimismo, se han caracterizado morfométricamente, con ayuda de un analizador automático de imágenes IBAS-2, las poblaciones neuronales que han resultado marcadas por transporte axónico retrógrado de la enzima, determinándose su área celular, perímetro y diámetros máximo, mínimo y medio (D). El análisis de la organización de este centro motor ha ido precedido por una estudio morfológico mediante procedimientos cito- y mielo- arquitectónicos, habiéndose utilizado técnicas de grafismo asistido por ordenador para la reconstrucción tridimensional de un modelo sólido de su superficie. Desde el punto de vista citoarquitectónico, distinguimos en el núcleo facial del perro tres regiones: lateral, intermedia y medial. La primera comprende los subnúcleos ventrolateral (VL) y dorsolateral (DL). La región intermedia incluye el subnúcleo intermedio (l), mientras que la región medial constan de los subnúcleos ventromedial (VM), intermedio-medial (IM) y dorsomedial (DM). Estas subdivisiones se extienden por distancias variables en dirección caudal y rostral, constituyendo seis columnas celulares longitudinales delimitadas por un número idéntico de surcos que deprimen la superficie del núcleo. Los modelos tridimensionales de la superficie del núcleo facial demuestran la mayor profundidad de los surcos ventral, dorsolateral y dorsomedial que determinan la segmentación látero-medial primaria del núcleo, en comparación con el trayecto generalmente más irregular y superficial de los surcos lateral, medlal-postenor y medial-anterior, responsables de su segmentación secundaria en sentido antera-posterior, Existen, asimismo, importantes variaciones regionales en cuanto a la disposición y tamaño de las diferentes columnas celulares del núcleo facial. Su polo caudal está representado por los subnúcleos laterales, apareciendo, en niveles progresivamente más craneales, el resto de subdivisiones. Estas alcanzan su mayor grado de diferenciación en las regiones medias y medio-craneales del núcleo. La reducción de su volumen se inicia por los subnúcleos VL y VM. El polo superior del núcleo facial suele estar constituido por la prolongación craneal de las subdivisiones intermedia y dorsomedial. En el estudio HRP-neurohistoquímico se ha observado un marcaje exclusivamente homolateral a la zona de aplicación de la enzima, correspondiendo el 22 % del total de neuronas marcadas al ramo auricular anterior, el 18 % al ramo cigomático, el 20 % al ramo bucolabial superior, el 26 % al ramo bucolabial inferior, el 3 % al ramo cervical y el 11 % a los ramos auriculares posteriores. En conjunto, las motoneuronas faciales presentan un área de 620,30 m2 (± 305,76 mµ), un perímetro de 113,49 mµ (±31.91 mµ) y un diámetro medio de 31,68 mµ (± 8,17 mµ), existiendo una tendencia de los elementos celulares más grandes a ocupar las reglones mas craneales. Las neuronas de origen del ramo auricular anterior se distribuyen en las porciones medial y lateral del subnúcleo IM, en las regiones dorsales del VM y en ciertas regiones del DM. Son, en general, células de mediano tamaño (D = 28,08 mµ ± -4,63 mµ). La aplicación de HRP a nivel del ramo cigomático ha determinado un intenso marcaje de las neuronas del 5 subnúcleo 1 y porción lateral del subnúcleo IM, aunque también el borde dorsal de la división DL contiene algunas células cigomáticas. Estas han presentado el mayor diámetro medio de los calculados (D = 42,25 mµ ± 7.11 mµ). En la población cigomática intermedia existe un predominio de células grandes, estando constituida la población cigomática intermedio-medial por células de mediano tamaño. Las neuronas de origen del ramo bucolabial superior (D = 30,22 mµ ± 5,47 mµ) tienden a organizarse en dos subpoblaciones: dorsolateral y ventrolateral. La primera es cuantitativamente más importante, si bien no se han hallado diferencias morfométricas significativas entre ambas. Una escasa proporción de células bucolabiales superiores ocupa los subnúcleos VM e IM. La población de origen del ramo bucolabial inferior también se distribuye en los subnúcleos DL y VL pero, a diferencia de la anterior, tiene un predominio ventrolateral Sus células presentan, en promedio, un diámetro de 27.73 mµ (± 3.71 mµ). Además, cierto número de fibras que se distribuyen por dicho ramo se originan en el subnúcleo VM. El ramo cervical está representado a nivel del subnúcleo VM, habiéndose determinado en las células de esta población un diámetro medio de 29,01 mµ (± 5,50 mµ). Por último, una importante proporción de neuronas auriculares posteriores (D = 29,45 mµ ± 8,54 mµ) se agrupa en el subnúcleo DM, aunque se han detectado abundantes células HRP-positivas en el subnúcleo IM, preferentemente en su porción medial. Entre estas últimas se hallan las células con mayores dimensiones del núcleo facial. Nuestro estudio experimental confirma que en el complejo nuclear facial del perro existe una organización funcional perfectamente determinada, que se relaciona con su segmentación citoarquitectónica: los subnúcleos laterales (VL y DL) representan el origen de los ramos bucolabiales: del subnúcleo 1 y porción lateral del subnúcleo IM parten las fibras del ramo cigomático: las motoneuronas auriculares se localizan en los subnúcleos DM e IM; y el subnúcleo VM da origen al ramo cervical, y a cierta proporción de fibras que se distribuyen a través de los ramos auricular anterior y bucolabiales. / “MORPHO-FUNCTIONAL SYSTEMATIZATION OF THE FACIAL MOTOR COMPLEX IN THE DOG. ANALYSIS OF ORIGIN NEURONS OF THE FACIAL NERVE PERIPHERAL BRANCHES, IDENTIFIED BY RETROGRADE /\XONAL TRANSPORT OF HORSERADISH PEROXIDASE”. TEXT: In 41 young dogs the morphology and organization of the facial motor nucleus has been analyzed with the aid of four methods: (1) cyto- and myelo-architectonic techniques; (2) selective application of horseradish peroxidise (HRP) to the six main peripheral branches of the facial nerve (anterior and posterior auricular branches, zygomatic branch, superior and inferior buccolabial branches and cervical branch;: (3) morphometric analysis of neurons labelled by retrograde axonal transport; and (4) computer-aided three-dimensional reconstruction of the facial nucleus surface, from parallel serial sections. Based on cytoarchitectonic criteria we divide the facial motor nucleus into six subnuclei: ventrolateral (VL), dorsolateral (DL), intermediate (I), ventromedial (VM), dorsomedial (DM) and intermediate-medial (IM). In the last subdivision we describe two portions: internal and external. After HRP application to the proximal stump of the six branches investigated, the labelling has been exclusively ipsilateral. The mean cellular area of the labelled motoneurons measures 620 mµ 2. The mean perimeter is 113 mµ, being 39 mµ, 25 mµ and 32 mµ the maximum, minimum and medium (D) diameters, respectively. Neurons of origin of the anterior auricular branch (D = 28 mµ) are distributed in the IM subnucleus and certain regions of the VM and OM. The zygomatic branch is represented in the I subnucleus and lateral portion of the IM. Some zygomatic neurons (D = 42 mµ) are also lying at the dorsal border of the DL subdivision. The superior (D = 30 mµ) and inferior (D = 28 mµ) buccolabial motoneurons are localized in the lateral region. The former display a DL predominance, and the later are principally VL. Few buccolabial fibers are originated from the VM subnucleus. Cervical neurons (D = 29 mµ) are restricted to the YM subnucleus, whereas great proportion of posterior auricular neurons (D = 30 mµ) are grouped within the OM subnucleus and medial portion of the IM subdivision.
14

Facial Behavior and Pair Bonds in Hylobatids

Florkiewicz, Brittany Nicole 01 May 2016 (has links)
Among primates, humans have the largest and most complex facial repertoires, followed not by their closest living hominid relatives but by hylobatids. Facial behavior is an important component of primate communication that transfers and modulates intentions and motivations. However, why great variation in primate facial expressions evolved and why hylobatid facial repertoires seem to be more similar to humans than other apes is unclear. The current study compared 206 hours of video and 103 hours of focal animal data of facial expression repertoires, measures of pair bond strength, and behavioral synchrony of ten hylobatid pairs from three genera (Nomascus, Hoolock, and Hylobates) living at the Gibbon Conservation Center, Santa Clarita, CA. This study explored whether facial repertoire breath or frequency were linked to social parameters of pair-bonds, how facial expressions related to behavioral synchrony, and if facial feedback (i.e., the transfer of behaviors and intentions by mimicking observed facial expressions) were important between pair-partners. Intra-pair facial repertoires correlated strongly with repertoire composition and rate of use, suggesting that facial feedback was important, while behavioral synchrony showed no correlation with facial behavior. The results of this study suggest that larger facial repertoires contribute to strengthening pair bonds, because richer facial repertoires provide more opportunities for facial feedback which effectively creates a better ‘understanding’ between partners through smoother and better coordinated interaction patterns.
15

Características de los grados de afectación del nervio facial y la discapacidad facial en pacientes con parálisis facial periférica de un año de evolución. Instituto Nacional de Ciencias Neurológicas. Marzo-junio 2015

Cruz Ausejo, Ruth Liliana January 2015 (has links)
OBJETIVOS: Determinar las características de los grados de afectación del nervio facial y la relación con la discapacidad facial en pacientes con parálisis facial periférica de un año de evolución. MATERIALES Y MÉTODOS: Estudio de tipo Observacional, correlacional, transversal. Se estudió una población de pacientes con diagnóstico de parálisis facial periférica durante el año 2014. Se seleccionó una muestra inicial de 56 pacientes a través de historias clínicas. Los criterios de inclusión fueron pacientes con lesión nerviosa del tipo axonotmesis (clasificación de Seddon), ser mayores de 18 años, sin antecedentes de parálisis facial periférica, sin alteración de la capacidad mental o haber recibido tratamiento por toxina botulínica. Se evaluó a 43 de ellos 22 mujeres y 21 varones, usando la escala House-Brackmann 2.0 y el Índice de Discapacidad Facial, posteriormente se describieron las características según sexo, edad y se determinó la relación entre ambas medidas de evaluación usando el coeficiente correlación de Pearson. RESULTADOS: Se encontró una fuerte correlación entre los grados de afectación del nervio facial y el Índice de discapacidad facial subescala física (r= -0.85, p< 0,001), para los grados de afectación del nervio facial y el índice de discapacidad facial subescala social (r= -0.74, p<0,001). Los participantes mayores de 60 años reflejaron puntajes superiores en el grado de afectación nerviosa y mayor discapacidad facial. Así mismo no se halló diferencia. mportante entre varones y mujeres para los grados de afectación del nervio facial. CONCLUSIONES: Se demostró la correlación negativa entre los grados de afectación del nervio facial y la Discapacidad Facial, a mayor grado de afección nerviosa facial se obtendrá puntajes inferiores en el cuestionario de autoevaluación de discapacidad. La inclusión de estas herramientas en la evaluación fisioterapéutica permitiría conocer además los cambios físicosociales que conllevan a la discapacidad como producto de la lesión facial. PALABRAS CLAVE: Parálisis Facial Periférica, Índice de Discapacidad Facial, House-Brackmann Facial Nerve Grading system 2.0 / --- OBJECTIVES: To determine the characteristics of the degrees of affection of the facial nerve and the relation with disability in patients with facial paralysis with 1 year of evolution. MATERIALS AND METHODS: Observational, correlational, and crosssectional study. A population of patients diagnosed with peripheral facial paralysis was studied during 2014. A first sample of 56 patients was chose through clinical records. Inclusion criteria were: patients with Axonotmesis type injury (Seddon’s classification), older than 18 years, without history of peripheral facial paralysis, not mental capacity disorder or having received treatment for botulinum toxin. 43 of them were evaluated – 21 women and 22 men – using the Facial Nerve Grading System 2.0 (FNGS2.0) and the Facial Disability Index. Characteristics according to sex and age were subsequently described and the relation between both evaluation measures was determined using the Pearson correlation coefficient. RESULTS: A strong correlation between the degrees of affection of facial nerve and Facial Disability Index for the physical subscale was found, (r= -0.85, p< 0,001) for the degrees of affection of the facial nerve and the Facial Disability Index for social subscale (r= -0.74, p<0,001). The participants older than 60 years reflected higher scores in the degrees of affection and a higher facial disability. In addition, there were no differences between degrees of affection in men and women. CONCLUSIONS: The level of nerve affection is associated with facial disability. And this association is higher with the physic disability dimension. Including these tools in physiotherapeutic evaluation would make possible to acknowledge physical and social changes that lead to disability as a result of facial nerve injury. KEY WORDS: Peripheral Facial Paralysis, Facial Disability Index, Facial Nerve Grading System 2.0.
16

Síntese de expressões faciais em fotografias para representação de emoções / Facial expression synthesis in photographs for emotion representation

Testa, Rafael Luiz 04 December 2018 (has links)
O processamento e a identificação de emoções faciais constituem ações essenciais para estabelecer interação entre pessoas. Alguns transtornos psiquiátricos podem limitar a capacidade de um indivíduo em reconhecer emoções em expressões faciais. De modo a contribuir com a solução deste problema, técnicas computacionais podem ser utilizadas para compor ferramentas destinadas ao diagnóstico, avaliação e treinamento no reconhecimento de tais expressões. Com esta motivação, o objetivo deste trabalho é definir, implementar e avaliar um método para sintetizar expressões faciais que representam emoções em imagens de pessoas reais. Nos trabalhos encontrados na literatura a principal ideia é que a expressão facial da imagem de uma pessoa pode ser reconstituída na imagem de outra pessoa. Este estudo difere-se das abordagens apresentadas na literatura ao propor uma técnica que considera a similaridade entre imagens faciais para escolher aquela que será empregada como origem para a reconstituição. Desta maneira, pretende-se aumentar o realismo das imagens sintetizadas. A abordagem sugerida para resolver o problema, além de buscar as faces mais similares em banco de imagens, faz a deformação dos componentes faciais e o mapeamento das diferenças de iluminação na imagem destino. O realismo das imagens geradas foi mensurado de forma objetiva e subjetiva usando imagens disponíveis em bancos de imagens públicos. Uma análise visual mostrou que as imagens sintetizadas com base em faces similares apresentaram um grau de realismo adequado, principalmente quando comparadas com imagens sintetizadas a partir de faces aleatórias. Além de constituir uma contribuição para a geração de imagens a serem aplicadas em ferramentas de auxílio ao diagnóstico e terapia de distúrbios psiquiátricos, oferece uma contribuição para a área de Ciência da Computação, por meio da proposição de novas técnicas de síntese de expressões faciais / The ability to process and identify facial emotions are essential factors for an individual\'s social interaction. Some psychiatric disorders can limit an individual\'s ability to recognize emotions in facial expressions. This problem could be confronted by using computational techniques in order to develop learning environments for diagnosis, evaluation, and training in identifying facial emotions. With this motivation, the objective of this work is to define, implement and evaluate a method to synthesize realistic facial expression that represents emotions in images of real people. The main idea of the studies found in the literature is that a facial expression of one persons image can be reenacted in an another persons image. The study differs from the approaches presented in the literature when proposing a technique that considers the similarity between facial images to choose the one that will be used as the origin for reenactment. As a result, we intend to increase the realism of the synthesized images. Our approach to solve the problem, besides searching for the most similar facial components in the image dataset, also deforms the facial elements and maps the differences of illumination in the target image. A visual analysis showed that the images synthesized on the basis of similar faces presented an adequate degree of realism, especially when compared with images synthesized from random faces. The study will contribute to the generation of the images applied to tools for the diagnosis and therapy of psychiatric disorders, and also contribute to the computational field, through the proposition of new techniques for facial expression synthesis
17

Determination of normative values for mechanical quantitative sensory tests in the orofacial regionDeterminação de valores normativos para testes quantitativos sensoriais mecânicos na região orofacial / Determinação de valores normativos para testes quantitativos sensoriais mecânicos na região orofacial

Quevedo, Henrique Müller de 16 May 2016 (has links)
Modern concepts for the treatment of pain patients are based on the hypothesis that different clinical signs and symptoms reflect different underlying pathophysiological mechanisms of pain generation. To analyze these mechanisms, in 2006, the DFNS (German Research Network on Neuropathic Pain) developed a standardized protocol of quantitative sensory testing (QST) for a quantitative evaluation of pain generating mechanisms, creating reference values for hand, foot and face (masseter muscle) sites. However, there is a lack of orofacial reference values for the temporalis muscle and maxillary gingiva. This study aimed to determine reference values for QST protocol in the orofacial region and evaluate the effectiveness of two test stimuli during conditioned pain modulation (CPM) test. Sixty participants (30 men/30 women) were examined through the tests of mechanical detection (MDT), mechanical pain (MPT), wind-up ratio (WUR), pressure pain threshold (PPT) and conditioned pain modulation (CPM), to determine reference values in healthy subjects. Individuals were examined in a single session by a trained examiner under the protocol developed by the DFNS (2006). The CPM statistical evaluation was done by a multi-way analysis of variance (ANOVA) within the factors site (2 levels), time (2 levels), and sex (2 levels); comparing the absolute values of MPT and PPT. QST reference values comparison was made by a multi-way withinsubjects ANOVA performed considering the factors site (3 levels), side (2 levels) and sex (2 levels) (&#x3B1;=5%). MDT and MPT showed main effects of site (p<0.001), where the maxillary gingiva presented the highest thresholds for MDT and lowest MPT thresholds. In addition, PPT values of the anterior temporalis were lower than the hand (p<0.001). PPT (p<0.001) showed main effects of sex, where men presented higher thresholds. WUR did not show any main effects of sex, site or side. Both CPM test-stimulus (PPT and MPT) were capable of producing significantly higher thresholds during conditioning stimulus when compared to baseline thresholds (p<0.001). Temporalis CPM respondents were significantly higher (p=0.002) than hand respondents for both QSTs. The study concluded that orofacial QST profile of healthy participants could be influenced by the test site and sex. The CPM does not differ considering PPT and MPT as test stimuli, but the test site can influence its effects. / Um novo conceito de tratamento de síndromes dolorosas baseada em mecanismos de dor é baseado na hipótese de que diferentes sinais clínicos refletem alterações em diversos mecanismos de geração de dor. Para analisar estes mecanismos, em 2006, o DFNS (German Research Network on Neuropathic Pain) criou um protocolo padronizado de testes quantitativos sensoriais (QST) para uma avaliação quantitativa de mecanismos de geração de dor, criando valores de referência para mão, pé e face (músculo masseter). No entanto, ainda há falta de valores de referência para alguns testes quantitativos em diversas importantes regiões orofaciais como o músculo temporal anterior e a mucosa oral. Este estudo buscou determinar valores normativos dos QSTs nessas regiões e avaliou a eficácia de um estímulo condicionante (CPM) na percepção da dor por meio de dois estímulos teste (PPT e MPT). 60 sujeitos saudáveis (30 homens/30 mulheres) foram examinados com os testes de sensibilidade tátil (MDT), limiar de dor mecânico (MPT), somação temporal (WUR), limiar de dor à pressão (PPT) e condicionamento modulatório da dor (CPM), afim de determinar valores normativos na população. Os pacientes foram examinados em sessão única por um único examinador treinado sob o protocolo desenvolvido pelo DFNS. Para avaliação estatística dos dados da CPM uma análise de variância (ANOVA) foi utilizada comparando os fatores sítio (2 níveis), tempo (2 níveis) e sexo (2 níveis) entre os dois estímulos teste (MPT e PPT). Os valores de referência para QST foram comparados por uma ANOVA multi-vias considerando os fatores sítio (3 níveis), lado (2 níveis), e sexo (2 níveis) (&#x3B1;=5%). MDT e MPT mostraram efeitos principais de sítio (p<0,001), em que a mucosa apresentou os maiores limiares para MDT e menos limiares para MPT, quando comparada à mão e temporal anterior. PPT demonstrou efeitos principais de sítio e sexo. Limiares de dor à pressão do músculo temporal foram menores comparados com a mão (p<0,001) e homens apresentaram maiores limiares que as mulheres em todos os sítios. O teste WUR não apresentou nenhum efeito de sexo, sítio ou lado examinado. Os dois estímulos teste da CPM (MPT e PPT) foram capazes de produzir maiores limiares quando comparados aos estímulos não condicionados (p<0,001). Um maior número significativo de sujeitos respondeu positivamente a estimulação CPM no músculo temporal (p=0,002) para ambos estímulos teste. O estudo concluiu que o perfil sensorial avaliados por meio de QSTs pode ser influenciado pela região de exame e sexo. O efeito da CPM foi igualmente positivo para ambos estímulos teste. No entanto, seu grau de resposta depende da região avaliada.
18

The heritability of facial morphology

Langstaff, Helen Katherine January 2016 (has links)
Facial recognition methodologies, widely used today in everything from automatic passport controls at airports to unlocking devices on mobile phones, has developed greatly in recent years. The methodologies vary from feature based landmark comparisons in 2D and 3D, utilising Principal Component Analysis (PCA) to surface-based Iterative Closest Point Algorithm (ICP) analysis and a wide variety of techniques in between. The aim of all facial recognition software (FCS) is to find or match a target face with a reference face of a known individual from an existing database. FCS, however, faces many challenges including temporal variations due to development/ageing and variations in facial expression. To determine any quantifiable heritability of facial morphology using this resource, one has to look for faces with enough demonstrable similarities to predict a possible genetic link, instead of the ordinary matching of the same individual’s face in different instances. With the exception of identical twins, this means the introduction of many more variables into the equation of how to relate faces to each other. Variation due to both developmental and degenerative aging becomes a much greater issue than in previous matching situations, especially when comparing parents with children. Additionally, sexual dimorphism is encountered with cross gender relationships, for example, between mothers and sons. Non-inherited variables are also encountered such as BMI, facial disfigurement and the effects of dental work and tooth loss. For this study a Trimmed Iterative Closest Point Algorithm (TrICP) was applied to three-dimensional surfaces scans, created using a white light scanner and Flexscan 3D, of the faces of 41 families consisting of 139 individuals. The TrICP algorithm produced 7176 Mesh-to-mesh Values (MMV) for each of seven sections of the face (Whole face, Eyes, Nose, Mouth, Eyes-Nose, Eyes-Nose-Mouth, and Eyes-Nose- Mouth-Chin). Receiver Operated Characteristic (ROC) analysis was then conducted for each of the seven sections of the face within 11 predetermined categories of relationship, in order to assess the utility of the method for predicting familial relationships (sensitivity/specificity). Additionally, the MMVs of three single features, (eyes, nose and mouth) were combined to form four combination areas which were analysed within the same 11 relationship categories. Overall the relationship between sisters showed the most similarity across all areas of the face with the clear exception of the mouth. Where female to female comparison was conducted the mouth consistently negatively affected the results. The father-daughter relationship showed the least similarity overall and was only significant for three of the 11 portions of the face. In general, the combination of three single features achieved greater accuracy as shown by Areas Under the Curve (AUC) than all other portions of the face and single features were less predictive than the face as a whole.
19

Dupla inervação muscular com neurorrafia término-lateral: estudo em ratos

Brambilla, Elisangela Jeronymo Stipp [UNESP] 17 February 2009 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:30:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-02-17Bitstream added on 2014-06-13T18:41:02Z : No. of bitstreams: 1 brambilla_ejs_dr_botfm.pdf: 3307631 bytes, checksum: 0e260db0e5b26d369266605cc36f3b7c (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Várias técnicas são utilizadas para o tratamento da paralisia facial, entre elas o enxerto de nervo transfacial e a transposição muscular. Estas técnicas foram associadas utilizando neurorrafia término-terminal (NTT) para tornar o músculo temporal duplamente inervado, porém, a secção de nervos saudáveis pode levar à atrofia ou enfraquecimento muscular. Os objetivos deste trabalho foram analisar a ocorrência da dupla inervação muscular através da neurorrafia término-lateral (NTL), avaliar a imediata inervação muscular através da NTL, evitando atrofia muscular e avaliar a ocorrência de degeneração Walleriana no segmento distal à NTL no nervo receptor. Foram utilizados 140 ratos Wistar divididos em sete grupos experimentais. O G1 foi o grupo controle de normalidade e o G2 o controle de desnervação. Em 80 ratos foi realizada a dupla inervação muscular (DIM) suturando o segmento proximal do nervo tibial (NT) na lateral intacta do nervo fibular comum (NFC). Estes ratos foram divididos em quatro grupos: G3 no qual os animais foram sacrificados após 120 dias; G4 onde 120 dias após a realização da DIM, o NFC foi seccionado proximal à NTL, estes animais foram sacrificados após 30 dias da secção; no G5 os animais foram sacrificados após 150 dias; no G6 120 dias após a realização da DIM, o NFC e o NT foram seccionados proximalmente à NTL e os animais foram sacrificados após 30 dias das secções; e no G7 o nervo fibular comum foi seccionado e, após 30 dias, o segmento proximal do NT foi suturado à lateral do coto distal do NFC e os animais foram sacrificados 120 dias após a NTL. Após realização dos testes da marcha e eletrofisiológico, os músculos tibiais craniais direitos (MTCD) foram removidos e pesados e os segmentos de nervo de interesse também foram coletados. Foram realizadas análises histomorfométricas das fibras do MTCD e fibras nervosas... / Among several techniques for facial palsy treatment, we have the transfacial nerve graft and the muscular transposition. Nowadays, these methods were associated using end–to–end neurorraphy (EEN). Even though the temporalis muscle became double innervated, the health nerve section possibly leads the muscular atrophy or even its weakness. The aim of this study was to analyze, through end-to-side neurorrhaphy (ESN), the double innervation of the muscle, the immediately muscular innervation and also evaluate the Wallerian degeneration occurrence in the distal segment of receptor nerve. One hundred forty Wistar rats were divided in seven experimental groups, 20 animals per group. The G1 was the sham group; G2 the control dennervation group. In 80 rats the double muscular innervations (DMI) was performed, the proximal segment of tibial nerve (TN) was sutured laterally to the intact peroneal nerve (PN). These 80 rats were divided in four groups: in G3 the animals were killed after 120 days; in G4, post 120 days, the peroneal nerve was cut proximal the ESN and after more 30 days the animals were killed; in the group G5 the rats were killed after 150 days; in G6 post 120 days, the peroneal and also the tibial nerves were cut proximal to the ESN and the animals were killed 30 days after the second surgery. Finally in the G7 the fibular nerve was sectioned and after 30 days, the proximal end of tibial nerve was sutured laterally to the peroneal distal stump. These rats (G7) were killed 120 days post ESN. The animals were submitted to walking track analysis and electrophysiological tests. After that, the right tibial cranial muscle (RTCM) was removed and the aim nerve segments were collected and weighted. The rats were killed with high doses of intraperitoneal sodium pentobarbital. Histomorphometrical analysis of TCM and nervous fiber was performed... (Complete abstract click electronic access below)
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Movimentos oculares e percepção facial humana:análises holística, configural e por características locais de imagens frontais de faces/

Varela, V. P. L. January 2018 (has links)
Dissertação (Mestrado em Engenharia Elétrica) - Centro Universitário FEI, São Bernardo do Campo, 2018

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