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Morphological shape analysis of children's actively generated viewpoints

Our visual system develops in a world of three-dimensional objects, where children often control the dynamic visual experience they experience. Our previous experimental work was the first to analyse in detail what object views are selected in children’s unconstrained manipulation of physical objects. The key finding was the distribution of dwell time across all possible viewpoints; preferred viewpoints are aro...

The contribution of sensory information on the unintentional synchronization of...

The role of acoustic cues in time-to-passage judgments : judging time-to-passag...

8º Encontro Nacional da Associação Portuguesa de Psicologia Experimental : posters : títulos e resumos ; Estimating the arrival of a moving sound is part of everyday tasks, such as when crossing a street with cars coming from both sides. Previous studies showed that approaching sounds were evaluated as closer than the real final distance, in comparison with corresponding receding sounds (Neuhoff; 2001). Thi...

Time-to-passage estimation on periphery : better for biological motion?

In  previous  studies,  complex  motion  stimuli  were  judged  as  passing  sooner  than  rigid stimuli  but  reflected  more  uncertainty  in  the  judgments  as  revealed  by  precision  loss  and  longer reaction  times.  It  is  known  that  biological  motion  can  be  perceived  in  the  periphery .  In  the everyday  life  people  are  required  to  interact  with  or  to  estimate  motion  variables  o...

The role of acoustic cues in time-­to-­passage judgments : judging time-­to-­pa...

5th Iberian Conference on Perception (CIP) ; Estimating  the  arrival  of  a  moving  sound  is  part  of  people’s  everyday  tasks,  such  as when  crossing  a  street  with  cars  coming  from  both  sides  (eg.  Winer,  1980  in  Rosenblum, Wuestefeld,  Saldaña,  1993).  Given  equal  distances,  the  beginning  and  ending  positions  of  a moving  sound’s  source  are  perceived  as  closer  when  movin...

Main axis of elongation dynamics and the planar bias in active object inspectio...

Poster apresentado em "Leuven Christmas Applied Vision Association (AVA) Conference", em Leuven, Bélgica, 2013 ; As we turn our bodies, as we hold and move objects close to us and act on them, we generate dynamic views. Recent studies have examined the viewpoints that infants select during free play and found large developmental changes in dwell time distribution, namely an increasing preference for orienting ...

Learning auditory space : generalization and long-term effects

Background: Previous findings have shown that humans can learn to localize with altered auditory space cues. Here we analyze such learning processes and their effects up to one month on both localization accuracy and sound externalization. Subjects were trained and retested, focusing on the effects of stimulus type in learning, stimulus type in localization, stimulus position, previous experience, externalizati...

Learning auditory space : generalization and long-term effects

Background Previous findings have shown that humans can learn to localize with altered auditory space cues. Here we analyze such learning processes and their effects up to one month on both localization accuracy and sound externalization. Subjects were trained and retested, focusing on the effects of stimulus type in learning, stimulus type in localization, stimulus position, previous experience, externalizati...

Depth cues and perceived audiovisual synchrony of biological motion

Due to their different propagation times, visual and auditory signals from external events arrive at the human sensory receptors with a disparate delay. This delay consistently varies with distance, but, despite such variability, most events are perceived as synchronic. There is, however, contradictory data and claims regarding the existence of compensatory mechanisms for distance in simultaneity judgments. Pr...

Effects of motion on time perception

To investigate the effect of motion on time perception, participants were asked to perform either a temporal discrimination task or a temporal generalization task while running or standing still on a treadmill. In the temporal discrimination (bisection) task, 10 participants were exposed to two anchor stimuli, a 300-ms Short tone and a 700-ms Long tone, and then classified intermediate durations in terms of the...