Gisele Chiozi Gotardi

Université de Rouen | UR · Centre d'Etude des Transformations des Activités. Physiques et Sportives (CETAPS)

We investigated whether in an in-situ collision avoidance experiment cyclists regulate braking by adopting an affordance-based control strategy. Within an affordance-based control strategy for braking, deceleration is controlled relative to the maximum achievable deceleration rather than by nulling out deviations from ideal deceleration, and potent...

We investigated whether the adaptation of postural control to perform saccadic tasks is still maintained in challenging situations such as when the posture is challenged with a large movement of the moving room and with the addition of a second perturbation as a visual task of memorization. Thirty young adults (20.0 ± 1.3 years) were randomly assig...

Diabetic older people tend to present deteriorated performance in balance and locomotion activities, even those without peripheral neuropathy. There is evidence that saccadic eye movements are used to reduce body sway in young and older healthy adults, but it has not been shown that diabetic older people preserve this visuomotor adaptation capacity...

The accurate perception of affordances has been shown to be codetermined by individual’s body dimensions and action capabilities. When using an object such as a scooter to pass through apertures, the perception of pass-ability reflects the person-object dimensions relative to the aperture. However, it is still unclear how body- and action-scaling i...

Affordance-based control theory claims that a critical constraint on successful braking is to keep the ideal deceleration required to stop (Dideal) below the maximum achievable deceleration (Dmax). Within this constraint, different braking styles are possible. We investigated whether active- and inactive-cyclists show different styles of braking in...

Background: The eyes are the main gateway of visual information input. Moving the eyes is essential to extract visual information from scenes while performing motor actions. This has helped to explain motor behavior, especially in relation to visual attention mechanisms, gaze training and learning, and the relevance of visual information in control...

The aim of this study was to investigate the effects of PD and aging on gaze behavior and performance of drivers in a simulated task. Ten drivers with PD, ten neurologically healthy older drivers, and ten neurologically healthy younger adult drivers were asked to drive in a car simulator for three minutes, maintaining car speed between 100 and 120...

BACKGROUND: Cognitive workload resulting from drivers’ engagement in concomitant tasks while driving, such as talking on a cell phone, affects the availability of attentional resources for the various stages of information processing, which can interfere with the selection of relevant traffic information, leading to poor performance and higher risk...

This study investigated the modulation of the center of pressure (CoP) displacements of young adults as they performed predictable and unpredictable saccadic eye movements on stationary and moving visual scenarios. It was also examined if the relationship between CoP displacements and visual stimulus, provided by the moving scenario, and gaze contr...

BACKGROUND: Understanding sport skills through the theories of visual perception brings the debate to the level of basic and applied components of science, characterizing contributions from the most relevant approaches in the field of Motor Behavior, the indirect and the direct paradigms. AIM AND FINDINGS: The first section of this article emphasiz...

The present article discusses video game simulation applied to research on driving a car. It presents an investigation into the eye movements and perceptual aspects of the research subjects on their interactions in the experimental condition. Investigations into how interactions occur in this interface are important for the development of research....

During curve negotiation, drivers tend to look at the tangent point of the curve (TP) to control steering. There is a lack of evidence on how experiences of natural and simulated driving are related. The purpose of this study was to investigate effects of experience in natural driving on gaze behavior of racing videogame players. Additionally, it a...

The visually guided braking has been investigated through information-based control approaches such as tau-dot strategy, which is mostly focused on how invariant optical variables regulate deceleration rate; however, the role of affordances on braking control is still unclear. The aim of the study was to determine whether cyclists take into account...

The pupil is the opening of the iris that allows light to penetrate in the eyes and reach the photoreceptors on the retina. Variations in its size can happen for two known reasons. First, through the pupillary light reflex, which controls the amount of optimal light that reaches the retina. Second, by activation of Locus Ceruleus (LC), a subcortica...

The aims of the study were to investigate the effects of race gaming experience in playing racing video games on gaze behaviour and performance of drivers and the effects of natural driving experience on gaze behaviour and performance of gamers. Thirty participants, divided into drivers-gamers, drivers-non-gamers and non-drivers-gamers, were asked...

Differences in the postural stabilization of older and young adults have been shown to be task-dependent on both visual and postural challenges; however, the gaze behavior during such tasks has rarely been examined. This study investigated the effects of horizontal and vertical saccades on gaze control, center of pressure (CoP) and head displacemen...

This study tested whether adverse effects of state anxiety on attention and performance may be modulated by experience. Sixteen experienced and eleven inexperienced drivers drove in a simulator under low-and high-stress conditions. Anxiety was manipulated by competition, the presence of an evaluator, external video camera, and traffic noise. Most d...

O objetivo deste estudo foi investigar o efeito dos movimentos sacádicos, horizontal e vertical, dos olhos no desempenho do controle postural de adultos jovens e idosos durante a manutenção da postura em pé em diferentes bases de apoio. Quinze adultos jovens e quinze idosos permaneceram parados em pé, sobre uma plataforma de força, nas bases de apo...

The aim of this study was to evaluate the effects of using a cell phone, operated in handheld (HAN) or speaker mode (SPK), on driver’s gaze movements during a driving simulation. Ten novice and ten experienced drivers had their line-of-gaze kinematics measured while driving. In the cell phone use conditions, participants answered easy, everyday lif...

This study tested the use of entropy to identify changes on behavior of drivers under pressure. Sixteen experienced drivers drove in a simulator wearing a head-mounted eye tracker under low-and high-anxiety conditions. Anxiety was induced by manipulating some psychological factors such as peer-pressure. Fixations transitions between AOIs (lane, spe...

The aim of this study was to investigate the effects of horizontal and vertical saccadic eye movements on postural control of young and older adults during the maintenance of upright stance in different bases of support. Fifteen young and fifteen older adults were asked to stand upright on a force plate in both bipedal and semi tandem bases of supp...

A ansiedade aumenta a alocação da atenção para estímulos salientes e/ou ameaçadores, tornando os indivíduos mais distraídos. No contexto de condução, essa alteração modula o comportamento do motorista e aumenta o risco de envolvimento em acidentes. Indivíduos ansiosos apresentam um maior número de colisões e passam mais tempo dirigindo fora dos lim...

The purpose of this chapter was to characterize how the postural system of healthy individuals is capable of adaption when facing distinct levels of challenge, all planned to vary the visual context involved. A series of postural studies showed a variety of circumstances in which the postural control system faced both stronger, mechanical, and subt...

A exploração visual na tarefa de dirigir é específica para obter informações do ambiente. Motoristas experientes apresentam uma estratégia de exploração visual mais eficiente do que motoristas novatos. No contexto de condução, a ansiedade altera o comportamento do motorista e aumenta o risco de envolvimento em acidentes. A Teoria de Controle Atenci...

O fenômeno do Olho Quieto (OQ) ocorre quando o olhar está relativamente estacionário em uma localização ou objeto em movimento antes do início de uma ação motora. Em uma perspectiva cognitiva, argumenta-se que OQ facilita o processamento de informação e sua duração reflete o tempo necessário para programar e promover um ajuste fino na resposta; nes...

Cascade ball juggling is a complex perceptual motor skill which requires efficient postural stabilization. The aim of this study was to investigate effects of experience (expert and intermediate groups) and foot distance (wide and narrow stances) on body sway of jugglers during three ball cascade juggling. A total of 10 expert jugglers and 11 inter...

The aim of the present study was to determine the effects of motor practice on visual judgments of apertures for wheelchair locomotion and the visual control of wheelchair locomotion in wheelchair users who had no prior experience. Sixteen young adults, divided into motor practice and control groups, visually judged varying apertures as passable or...