Publicaties

How we perceptually organize a visual stimulus depends not only on the stimulus itself, but also on the temporal and spatial context in which the stimulus is presented and on the individual processing the stimulus and context. Earlier research found both attractive and repulsive context effects in perception: tendencies to organize visual input similarly to preceding context stimuli (i.e., hysteresis, attraction) co-exist with tendencies that ...

Visual deficits are core deficits of schizophrenia. Classically, deficits are determined with demanding psychophysical tasks requiring fine-grained spatial or temporal resolution. Less is known about holistic processing. Here, we employed the Leuven Embedded Figures Test (L-EFT) measuring classic aspects of Gestalt processing. A target shape is embedded in a context and observers have to detect as quickly as possible in which display the target ...

An eye-tracking and questionnaire study was set up in collaboration with the Van Abbemuseum (Eindhoven, The Netherlands) to investigate the perception and appreciation of three Frank Stella paintings from the 60s (Tuxedo Park Junction and Effingham I from the collection of the museum and a hand-painted replica of Hiraqla Variation II). Effingham and Hiraqla were shown next to a printed copy without fluorescent colors, for a direct comparison ...

Previous studies provided evidence in support of attention operating in three-dimensional space, and the iterative and multistage nature of organizational processes in relation to attention and depth. We investigated depth perception and attentional demands in grouping organizations that contain blur as a depth cue. Contrary to previous studies, in our displays, no depth from occlusion could be implied from a shared border between groups or ...

The majority of studies showing multisensory attention benefits have focused on brief audiovisual events. Here we examined whether attention benefits can occur for auditory and visual signals that change in synchrony over time. In the first two experiments we found no evidence that attention was captured more by synchronous compared to asynchronous audiovisual and visual looming signals. The results of our third experiment suggested that ...

BACKGROUND: According to Bayesian hypotheses, individuals with Autism Spectrum Disorder (ASD) have difficulties making accurate predictions about their environment. In particular, the mechanisms by which they assign precision to predictions or sensory inputs would be suboptimal in ASD. These mechanisms are thought to be mostly mediated by glutamate and GABA. Here, we aimed to shed light on prediction learning in ASD and on its neurobiological ...