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O sentido do movimento estudantil contemporâneo pela voz dos estudantes da saúde; The meaning of contemporary student movement throught healt students point of view

Reis, Alessandra Martins dos
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 24/05/2007 Português
Relevância na Pesquisa
36.32%
O objeto deste trabalho é o movimento estudantil contemporâneo. O objetivo foi caracterizar os estudantes que participam do movimento estudantil contemporâneo, identificar os principais temas discutidos pelo movimento na atualidade, caracterizar as práticas e formas de organização do movimento estudantil e analisar as concepções de saúde tomadas pelo movimento. Trata-se de pesquisa descritiva em que a exposição do objeto se deu, tanto pela via qualitativa, como pela via quantitativa. A coleta dos dados quantitativos ocorreu durante o conselho nacional de entidades de base (CONEB) da União Nacional dos Estudantes (UNE) entre os dias 13 e 16 de abril de 2006; os dados qualitativos foram colhidos entre os meses de abril e novembro de 2006 em Campinas e São Paulo (SP). A população foi constituída de estudantes universitários que participam de centros acadêmicos e outras entidades estudantis. Foram distribuídos aos participantes do CONEB questionários com perguntas fechadas combinando: informações acerca do estudante; questões acerca das condições sociais de suas famílias; questões acerca da participação política e social dos estudantes. Num segundo momento, foram entrevistados apenas estudantes da área da saúde e da UNE. Esse foi o momento em que...

Distância e movimento em Berkeley: a metafísica da percepção; Distance and movement in Berkeley: the perception's metaphysics

Zunino, Pablo Enrique Abraham
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 27/06/2006 Português
Relevância na Pesquisa
36.11%
Esta dissertação examina a relação entre percepção e experiência na filosofia de Berkeley, esclarecendo seus principais aspectos ontológicos e epistemológicos, de modo a proporcionar uma compreensão nítida da identificação entre ser e perceber. Em primeiro lugar, definimos três posições filosóficas que constituem o contexto do pensamento de Berkeley, isto é, o cartesianismo, o ceticismo e o corpuscularismo. Em vista disso, discutimos dois temas centrais - distância e movimento - enquanto pontos decisivos para a compreender a inflexão de Berkeley no tratamento das questões ligadas à representação e ao conhecimento. Por último, destacamos a concepção instrumentalista de ciência defendida por Berkeley, a partir da distinção entre física e metafísica e da análise do conceito de causalidade.; This dissertation examines the relation between perception and experience in Berkeley's philosophy, clarifying its main ontological and epistemological aspects, in order to provide a clear understanding of the identification between being and perceiving. In first place, we define three philosophical positions that constitute Berkeley's thought context, that is, cartesianism, skepticism and corpuscularism. In sight of this...

O calçado esportivo destinado à prática de futsal: avaliações mecânicas, biomecânicas e de percepção; The indoor soccer shoes: mechanical, biomechanical and perception evaluations

Faquin, Aline
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 12/09/2012 Português
Relevância na Pesquisa
36.19%
A busca por um calçado adequado à prática de futsal e que promova conforto ao usuário são circunstâncias que nos levam ao tema central deste estudo: investigar o calçado de futsal em seus parâmetros mecânicos, biomecânicos e perceptivos. O estudo constou de 4 etapas. Foi aplicado um questionário a 206 atletas e foram avaliados três modelos de calçado para prática de futsal em seus aspectos de construção, respostas biomecânicas e percepção. Participaram 10 voluntários, atletas de futsal e foram avaliados: a) massa, resistência e dureza do calçado; b) temperatura de aquecimento do pé (termo-higrômetro digital); c) variação da radiação térmica do calçado (câmera térmica Eletrophyiscs PV320T); d) pressão plantar (palmilhas Pedar Novel System); e) força de reação do solo (plataforma de força AMTI) e f) percepção do usuário (escala visual). O aquecimento do pé e do cabedal foi analisado após corrida em esteira a 10km/h. Para coleta dos parâmetros de pressão plantar e força de reação do solo os voluntários realizaram 10 tentativas válidas dos movimentos de corrida a 15km/h±5% e 5 tentativas para o movimento de passe a 8km/h±5%. Após isso os voluntários avaliaram os calçados testados por uma escala com pontuação de 1 a 10 para conforto e calce. O questionário apontou que o conforto e a flexibilidade são as principais características do calçado na opinião dos atletas. Lesões do tipo calos e bolhas são freqüentes...

Implied Movement in Static Images Reveals Biological Timing Processing

Nather,Francisco Carlos; Anelli,Vinicius; Ennes,Guilherme; Bueno,José Lino Oliveira
Fonte: Universidade de São Paulo, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Publicador: Universidade de São Paulo, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/08/2015 Português
Relevância na Pesquisa
36.31%
Visual perception is adapted toward a better understanding of our own movements than those of non-conspecifics. The present study determined whether time perception is affected by pictures of different species by considering the evolutionary scale. Static (“S”) and implied movement (“M”) images of a dog, cheetah, chimpanzee, and man were presented to undergraduate students. S and M images of the same species were presented in random order or one after the other (S-M or M-S) for two groups of participants. Movement, Velocity, and Arousal semantic scales were used to characterize some properties of the images. Implied movement affected time perception, in which M images were overestimated. The results are discussed in terms of visual motion perception related to biological timing processing that could be established early in terms of the adaptation of humankind to the environment.

Body movement implied by static images modulates eye movements and subjective time estimation

Nather,Francisco Carlos; Bueno,José Lino Oliveira; Bigand,Emmanuel
Fonte: Pontificia Universidade Católica do Rio de Janeiro; Universidade de Brasília; Universidade de São Paulo Publicador: Pontificia Universidade Católica do Rio de Janeiro; Universidade de Brasília; Universidade de São Paulo
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2013 Português
Relevância na Pesquisa
36.22%
The present study investigated the influence of body movement implied by artwork on time estimation and its relationship with eye movement. In Experiment 1, the participants were presented with static photographic images of Edgar Degas sculptures that implied different movements. The participants were asked to estimate their exposure times. Overestimation was found for the dancer who represented the greater movement. Eye movements were more directed to legs and arms in the ballerina that implied more movement, indicating more dynamic eye movements for this dancer, which was also overestimated. Experiment 2 further investigated whether this effect was specific to body representation or whether it was linked to the perceptual feature of the images. The participants were presented with drawings that mimicked global shapes (lines) of the Degas sculptures. Differences in time estimation were not obtained under this experimental condition. The results suggest an embodied perception of body movement that modulates eye movements and time estimation.

Subjective time perception is affected by different durations of exposure to abstract paintings that represent human movement

Nather,Francisco Carlos; Fernandes,Paola Alarcon Monteiro; Bueno,José Lino Oliveira
Fonte: Pontificia Universidade Católica do Rio de Janeiro; Universidade de Brasília; Universidade de São Paulo Publicador: Pontificia Universidade Católica do Rio de Janeiro; Universidade de Brasília; Universidade de São Paulo
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2014 Português
Relevância na Pesquisa
46.44%
Time perception can be affected by real emotional pictures of people that evoke different levels of arousal. Figurative artwork images of body postures that imply movement with different intensities and evoke different levels of arousal can modulate the perception of time. The present study investigated whether abstract paintings that represent motion in different ways affect the perception of time when subjects are exposed to the paintings for different durations. Undergraduate students observed 20 abstract paintings from different artistic schools (i.e., cubism, constructivism, expressionism, and futurism). They observed for 3 s each painting and estimated the time of exposure (reproduction method). After the time estimations, the subjects completed different semantic Movement, Arousal, Complexity, and Recognition scales to obtain information about how the painting compositions were perceived. Time distortions were observed for only two cubist paintings that represented human forms, which were related to both evoked arousal and implied movement (Experiment 1). Experiment 2 further verified whether these time distortions were related to implied movement perception or arousal. Different groups of participants were exposed for 3 and 9 s to only four cubist paintings that represented human forms. These time exposures (3 and 9 s) were used because the arousal-evoking effects may be transient for exposure times that are longer than 2-3 s. The data analysis revealed overestimation of time for the cubist painting that had greater arousal and movement scores only when the subjects were exposed for 9 s...

Visual movement perception in deaf and hearing individuals

Hauthal, Nadine; Sandmann, Pascale; Debener, Stefan; Thorne, Jeremy D.
Fonte: University of Finance and Management in Warsaw Publicador: University of Finance and Management in Warsaw
Tipo: Artigo de Revista Científica
Publicado em 17/06/2013 Português
Relevância na Pesquisa
36.23%
A number of studies have investigated changes in the perception of visual motion as a result of altered sensory experiences. An animal study has shown that auditory-deprived cats exhibit enhanced performance in a visual movement detection task compared to hearing cats (Lomber, Meredith, & Kral, 2010). In humans, the behavioural evidence regarding the perception of motion is less clear. The present study investigated deaf and hearing adult participants using a movement localization task and a direction of motion task employing coherently-moving and static visual dot patterns. Overall, deaf and hearing participants did not differ in their movement localization performance, although within the deaf group, a left visual field advantage was found. When discriminating the direction of motion, however, deaf participants responded faster and tended to be more accurate when detecting small differences in direction compared with the hearing controls. These results conform to the view that visual abilities are enhanced after auditory deprivation and extend previous findings regarding visual motion processing in deaf individuals.

The contribution of LM to the neuroscience of movement vision

Zihl, Josef; Heywood, Charles A.
Fonte: Frontiers Media S.A. Publicador: Frontiers Media S.A.
Tipo: Artigo de Revista Científica
Publicado em 17/02/2015 Português
Relevância na Pesquisa
36.26%
The significance of early and sporadic reports in the 19th century of impairments of motion vision following brain damage was largely unrecognized. In the absence of satisfactory post-mortem evidence, impairments were interpreted as the consequence of a more general disturbance resulting from brain damage, the location and extent of which was unknown. Moreover, evidence that movement constituted a special visual perception and may be selectively spared was similarly dismissed. Such skepticism derived from a reluctance to acknowledge that the neural substrates of visual perception may not be confined to primary visual cortex. This view did not persist. First, it was realized that visual movement perception does not depend simply on the analysis of spatial displacements and temporal intervals, but represents a specific visual movement sensation. Second persuasive evidence for functional specialization in extrastriate cortex, and notably the discovery of cortical area V5/MT, suggested a separate region specialized for motion processing. Shortly thereafter the remarkable case of patient LM was published, providing compelling evidence for a selective and specific loss of movement vision. The case is reviewed here, along with an assessment of its contribution to visual neuroscience.

The Evolutionary and Cognitive Basis of the Perception and Production of Dance

Brady, Adena Michelle
Fonte: Harvard University Publicador: Harvard University
Tipo: Thesis or Dissertation
Português
Relevância na Pesquisa
36.26%
Dance is a universal and ancient human behavior; however, our understanding of the basis of this behavior is surprisingly weak. In this dissertation, I explore the cognitive and evolutionary foundations of human dance, providing evidence of two ways in which the production and perception of dance actions are rooted in the functions of more general cognitive systems.In doing so, I aim to both inform our understanding of dance, and use the study of dance to elucidate broader issues in cognition. Chapter 1 demonstrates that the ability to entrain, or move in time with an auditory beat, is not unique to humans. In addition, across hundreds of species, I find that all animals able to entrain can also vocally imitate sound. This supports the hypothesis that entrainment relies on cognitive machinery that originally evolved to support vocal imitation. Chapter 2 investigates the perception of dance-like actions. Previous work shows that we infer the goals of observed actions by calculating their efficiency as a means to external effects, like reaching an object or location. However, dance actions typically lack an external effect or external goal. In two experiments, I show that for dance-like actions, adults infer that the agents’ goal is simply to produce the movements themselves. Furthermore...

Spared Ability to Perceive Direction of Locomotor Heading and Scene-Relative Object Movement Despite Inability to Perceive Relative Motion

Vaina, Lucia M.; Buonanno, Ferdinando; Rushton, Simon K.
Fonte: International Scientific Literature, Inc. Publicador: International Scientific Literature, Inc.
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
36.23%
Background: All contemporary models of perception of locomotor heading from optic flow (the characteristic patterns of retinal motion that result from self-movement) begin with relative motion. Therefore it would be expected that an impairment on perception of relative motion should impact on the ability to judge heading and other 3D motion tasks. Material/Methods We report two patients with occipital lobe lesions whom we tested on a battery of motion tasks. Patients were impaired on all tests that involved relative motion in plane (motion discontinuity, form from differences in motion direction or speed). Despite this they retained the ability to judge their direction of heading relative to a target. A potential confound is that observers can derive information about heading from scale changes bypassing the need to use optic flow. Therefore we ran further experiments in which we isolated optic flow and scale change. Results: Patients’ performance was in normal ranges on both tests. The finding that ability to perceive heading can be retained despite an impairment on ability to judge relative motion questions the assumption that heading perception proceeds from initial processing of relative motion. Furthermore, on a collision detection task...

The Active Control of Self-Movement Perception: Neuronal Mechanisms and Cognitive Aging

Jacob, Michael Simon ; Duffy, Charles J.
Fonte: Universidade de Rochester Publicador: Universidade de Rochester
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
46.11%
Thesis (Ph.D.)--University of Rochester. School of Medicine & Dentistry. Dept. of Neurobiology and Anatomy, 2011.; Self-movement creates a radial pattern of optic #ow that tells us where we are going. Recent studies have shown that the processing of visual motion is actively controlled by frontal-parietal cortical networks to satisfy the demands of ongoing behavior. Navigation-related visual motion perceptual de!cits in aging and Alzheimer’s disease (AD) suggest a systems level disruption of optic flow processing in these conditions. We have now examined this system using human evoked potentials and probed the underlying neuronal mechanisms using monkey single neuron physiology. In our studies of aging and AD, we combine a continuous visual discrimination task with simultaneous visual motion and word stimulus streams to assess task effects on stimulus evoked cortical activity. We !nd that the cognitive control of motion and word processing are fundamentally different in aging and AD. Impairments in verbal #uency among our AD patients and impairments in optic #ow perceptual thresholds among our older adult subjects are associated with selective reductions in cortical responsiveness to word and optic #ow stimuli, respectively. Thus...

A Perception-Action Approach to Rhythmic Movement Coordination

Wilson, Andrew D.
Fonte: [Bloomington, Ind.] : Indiana University Publicador: [Bloomington, Ind.] : Indiana University
Tipo: Doctoral Dissertation
Português
Relevância na Pesquisa
36.4%
Thesis (PhD) - Indiana University, Psychology, 2005; Coordinated rhythmic movement is very specifically structured in humans. 0° mean relative phase (the two oscillating limbs doing the same thing at the same time) is easy and stable; 180° (the two limbs doing the opposite thing at the same time) is less stable; and no other relative phase is stable without training. The present study explored the identity and role of the perceptual information used in rhythmic movement coordination tasks in creating this pattern. 4 participants were trained to improve their perceptual resolution of 90° over a two week period. This training resulted in improved movement stability in a rhythmic movement coordination task, without additional practice of the task itself. Improved ability to detect the information at 90° allowed for improved performance in a movement task at 90°. In a second study, we systematically perturbed three aspects of the coordinated motion of two dots on a computer screen, and tested the effect of these perturbations on the same 4 participants. In line with predictions based on previous modeling results, perturbations that disrupted perceptual information about peak velocity and peak amplitude disrupted participants' ability to perform the task; this information allows rescaling of velocity information and is vital for stable perception of the underlying information (the relative direction of motion). Perturbations that increased the magnitude of the relative speed between the dots added noise to the task...

Movement correlation as a nonverbal cue in the perception of affiliation in thin slices of behaviour

Latif, NIDA
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
36.36%
Our perceptual systems can create a rich representation of the social cues gathered during social interaction. Very brief exposures or ‘thin slices’ of behavioural and linguistic information are sufficient for making accurate judgments regarding social situations and building these social representations. This is akin to our accurate recognition of static visual stimuli with brief exposures to a scene in the study of scene gist (Oliva, 2005). This thesis examines a specific social cue during social interaction - how the correlation of movement between two people varies as a result of their affiliation. Further, this thesis investigates how we perceive that behavioural cue when making judgments of affiliation while observing conversation. It has already been established that there is coordination of linguistic and behavioural information during social interaction (Ambady & Rosenthal, 1992). This coordination is more prominent when individuals are familiar with each than when they are not (Dunne & Ng, 1994). The first study in this thesis quantifies the variation in the coordination of movement between two people in conversation based on their affiliation. Results demonstrate that the correlation of movements between friends is greater than the correlation during stranger interaction. This experiment demonstrates that movement varies as a result of affiliation and that people could use this coordination as a cue when making accurate judgments of affiliation while observing social interaction. The second study used the analysis of movement correlation to examine how correlation serves as a cue for accuracy of affiliation judgment by observers. Results demonstrate that although correlation was not a significant cue in affiliation perception...

Quand l’action surpasse la perception : Rôle de la vision et de la proprioception dans la perception et le contrôle en temps réel de l’orientation spatiale de la main

Gosselin-Kessiby, Nadia
Fonte: Université de Montréal Publicador: Université de Montréal
Tipo: Thèse ou Mémoire numérique / Electronic Thesis or Dissertation
Português
Relevância na Pesquisa
36.29%
Cette recherche a pour but d’évaluer le rôle de la vision et de la proprioception pour la perception et le contrôle de l’orientation spatiale de la main chez l’humain. L’orientation spatiale de la main est une composante importante des mouvements d’atteinte et de saisie. Toutefois, peu d’attention a été portée à l’étude de l’orientation spatiale de la main dans la littérature. À notre connaissance, cette étude est la première à évaluer spécifiquement l’influence des informations sensorielles et de l’expérience visuelle pour la perception et le contrôle en temps réel de l'orientation spatiale de la main pendant le mouvement d’atteinte naturel vers une cible stationnaire. Le premier objectif était d’étudier la contribution de la vision et de la proprioception dans des tâches de perception et de mouvement d’orientation de la main. Dans la tâche de perception (orientation-matching task), les sujets devaient passivement ou activement aligner une poignée de forme rectangulaire avec une cible fixée dans différentes orientations. Les rotations de l’avant-bras et du poignet étaient soit imposées par l’expérimentateur, soit effectuées par les sujets. Dans la tâche de mouvement d’orientation et d’atteinte simultanées (letter posting task 1)...

Space and Motion Perception and Discomfort in Air Travel

Ramos, Renato Teodoro; de Mattos, Danielle A.; Reboucas, J. Thales S.; Ranvaud, Ronald Dennis Paul Kenneth Clive
Fonte: AEROSPACE MEDICAL ASSOC; ALEXANDRIA Publicador: AEROSPACE MEDICAL ASSOC; ALEXANDRIA
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
46.23%
RAMOS RT, MATTOS DA, REBOUCAS ITS, RANVAUD RD. Space and motion perception and discomfort in air travel. Aviat Space Environ Med 2012; 83:1162-6. Introduction: The perception of comfort during air trips is determined by several factors. External factors like cabin design and environmental parameters (temperature, humidity, air pressure, noise, and vibration) interact with individual characteristics (anxiety traits, fear of flying, and personality) from arrival at the airport to landing at the destination. In this study, we investigated the influence of space and motion discomfort (SMD), fear of heights, and anxiety on comfort perception during all phases of air travel. Methods: We evaluated 51 frequent air travelers through a modified version of the Flight Anxiety Situations Questionnaire (FAS), in which new items were added and where the subjects were asked to report their level of discomfort or anxiety (not fear) for each phase of air travel (Chronbach's alpha = 0.974). Correlations were investigated among these scales: State-Trait Anxiety Inventory (STAB, Cohen's Acrophobia Questionnaire, and the Situational Characteristics Questionnaire (SitQ, designed to estimate SMD levels). Results: Scores of SitQ correlated with discomfort in situations involving space and movement perception (Pearson's rho = 0.311)...

Expressividade cênica pelo fluxo percepção/ação : o sistema Laban/Bartenieff no desenvolviemtno somático e na criação em dança; Scenic expressivity through perception/aaction : Laban/Bartenieff's system for somatic development and creation in dance

Marisa Martins Lambert
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 30/08/2010 Português
Relevância na Pesquisa
36.19%
Abrangendo as vias da prática artística e reflexão teórica, esta pesquisa propõe-se a investigar a construção do saber expressivo do artista da dança. Avalia brevemente modos de se ensinar e criar a dança cênica, para reconhecer as necessidades de o artista ser, hoje, um intérprete-criador da sua linguagem expressiva. Ressalta a importância, para o profissional da arte do movimento, de maleabilizar suas fronteiras, voltando-se para a posse de uma corporeidade consistente, capaz de gerar respostas engajadas e diferenciadas, frente a seus desejos criativos e às novas demandas que eclodem da contemporaneidade. Por meio de recursos provenientes dos campos da Educação Somática e da Análise do Movimento, enuncia-se aqui um caminho que propõe o desenvolvimento do potencial expressivo pelo fluxo percepção/ação - uma abordagem que busca contatar os próprios alicerces da expressividade. Direcionada a apoiar o artista conceitualmente e em uma vivência corporal criativa, fundada na autenticidade, aponta uma visão sensível e dinâmica dos princípios e conceitos do Sistema Laban/Bartenieff, como ferramenta para recontextualizar processos de formação e criação em dança. Os objetivos dessa pesquisa completam-se na sua aplicação prática em dois projetos de criação coreográfica...

Imágenes - percepción y cine en Bergson y Deleuze.; Images – perception and cinema in Bergson and Deleuze. [Spanish]

Matthias Vollet; Johannes Gutenberg-Universtät Mainz
Fonte: Universidad del Norte Publicador: Universidad del Norte
Tipo: article; publishedVersion Formato: application/pdf
Português
Relevância na Pesquisa
46.23%
Deleuze explica el cine a partir de dos nociones claves: imagen-movimiento e imagen-tiempo. Con las dos, quiere a grosso modo explicar el cine hasta la Segunda Guerra Mundial como un cine que se concentra en acción y movimiento, a diferencia del cine de Posguerra, que se ha vuelto reflexivo y pivilegia la presencia del tiempo. Deleuze afirma que ha tomado ambos conceptos de Bergson, y especialmente de su obra Materia y memoria. Este artículo explicará brevemente algunos rasgos fundamentales de estas nociones en Deleuze, después abordará a Bergson para ver en qué sentido él era creador de estas nociones y, finalmente, regresará a Deleuze para precisar las nociones en cuestión y sus alcances en la explicación del cine.; Deleuze determines the nature of cinema in terms of two key concepts: image-movement and image-time. With the help of these concepts he explains the essence of cinema before WW II as being founded on action and movement, whereas cinema after WW II is explained as having changed into a reflexive cinema which is directed towards time and its realizations. Deleuze says that he has taken both concepts from Bergson’s “Matter and Memory”. In this article these Deleuzian concepts are roughly explained. I will then address the question in what sense Bergson can be considered as the originator of these concepts. I will finally specify the Deleuzian concepts of imagemovement and image-time and discuss their explanatory forceBergson,

Image motion environments: background noise for movement-based animal signals

Peters, Richard; Hemmi, Jan; Zeil, Jochen
Fonte: Springer Publicador: Springer
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
36.11%
Understanding the evolution of animal signals has to include consideration of the structure of signal and noise, and the sensory mechanisms that detect the signals. Considerable progress has been made in understanding sounds and colour signals, however, t

Visual perception of international traffic signs: influence of e-learning and culture on eye movements

Rakoczi, Gergely; Duchowski, Andrew; Casas-Tost, Helena; Pohl, Margit
Fonte: Universidade Autônoma de Barcelona Publicador: Universidade Autônoma de Barcelona
Tipo: Artigo de Revista Científica Formato: application/pdf
Publicado em //2013 Português
Relevância na Pesquisa
36.11%
Various eye movement metrics were recorded during the visual perception of international traffic signs embedded within an elearning course designed to familiarize participants with foreign signage. Goals of the were to gauge differences in task types,sign origin, and ethnicity (American, Chinese, and Austrian) as well as effectiveness of the e-learning teaching materials in terms of prior preparation. Results, in contrast to other studies, suggest that teaching materials had no overall effect on either eye movement metrics nor on task success rates. Instead, sign origin had the strongest effect on gaze, as foreign signs in mixed presentation with domestic signs, elicited a larger number of fixations with longer mean fixation durations, highest regression rates, and lower performance scores. Possible effects of ethnicity were also noted: Americans showed lower mean fixation durations over the entire experiment, independent of test conditions, with Chinese participants fixating faster on (correct) road signs than the other ethnic groups.

Movement-induced motion signal distributions in outdoor scenes

Zanker, Johannes; Zeil, Jochen
Fonte: Taylor & Francis Group Publicador: Taylor & Francis Group
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
46.01%
The movement of an observer generates a characteristic field of velocity vectors on the retina (Gibson 1950). Because such optic flow-fields are useful for navigation, many theoretical, psychophysical and physiological studies have addressed the question