- Visual perception and processing mechanisms
- Visual Attention and Saliency Detection
- Face Recognition and Perception
- Multisensory perception and integration
- Gaze Tracking and Assistive Technology
- Categorization, perception, and language
- Memory and Neural Mechanisms
- Neural and Behavioral Psychology Studies
- Neural dynamics and brain function
- Olfactory and Sensory Function Studies
- Infrared Target Detection Methodologies
- Face recognition and analysis
- Tactile and Sensory Interactions
- Aesthetic Perception and Analysis
- Color perception and design
- Spatial Cognition and Navigation
- Image Retrieval and Classification Techniques
- Robotics and Automated Systems
- Advanced Image and Video Retrieval Techniques
- EEG and Brain-Computer Interfaces
- Constraint Satisfaction and Optimization
- Neural Networks and Applications
- Autism Spectrum Disorder Research
- Morphological variations and asymmetry
- Advanced Vision and Imaging
Kiel University
2022
KU Leuven
2003-2015
Thomas More University
2014
Thomas More Kempen
2013
Human observers are experts at face recognition, yet a simple 180 degrees rotation of photograph decreases recognition performance substantially. A full understanding this phenomenon-which is believed to be important for clarifying the nature our expertise in recognition-is still waiting. According long-standing and influential hypothesis, an inverted cannot perceived as holistically upright has analyzed local feature by feature. Here, we tested holistic perception hypothesis inversion...
Recent research indicates that risk competence and perception can be improved through the learning environment. The project 'Riscki' examined how in young children between three eight years of age observed measured within classroom school context. An intensive package risky-play activities was administered over a three-month period to two classes (four- six-year-olds) age-matched served as controls. Before after intervention period, quantitative qualitative aspects were evaluated all by: (1)...
Multiple times per second, the visual system succeeds in making a seamless transition between presaccadic and postsaccadic perception. The nature of transsaccadic representation needed to support this was commonly thought be sparse abstract. However, recent studies have suggested that detailed information is transferred across saccades as well. Here, we seek confirm preview effects detail on perception do indeed occur. We presented subjects with highly similar artificial shapes, preceded by...
Stimulus displacements coinciding with a saccadic eye movement are poorly detected by human observers. In recent years, converging evidence has shown that this phenomenon does not result from poor transsaccadic retention of presaccadic stimulus position information, but the visual system's efforts to spatially align and postsaccadic perception on basis landmarks. It is known process can be disrupted, displacement detection performance improved, briefly blanking display during immediately...
Objects likely to appear in a given real-world scene are frequently found be easier recognize. Two different sources of contextual information have been proposed as the basis for this effect: global background and individual companion objects. The present paper examines relative importance these two elements explaining context-sensitivity object identification full scenes. Specific sequences fixations were elicited during free exploration, while fixation times on designated target objects...
Earlier research supports the idea that transsaccadic memory involves a relatively sparse and abstract representation with little detail, much like visual short-term (VSTM) within fixation. We examined whether is restricted to VSTM representations or it also includes maskable, short-lived, more detailed representation, referred as analog. First, within-fixation change detection experiment reported, aimed at clarifying distinction between analog, relationship two components. then report 4...
AbstractThere is abundant evidence that face recognition, in comparison to the recognition of other objects, based on holistic processing rather than analytic processing. One line research provides for this hypothesis study people who experience pronounced difficulties visually identifying conspecifics basis their face. Earlier, we developed a behavioural paradigm directly test vs. In be remembered reference stimulus, one two stimuli was either presented full view, with an eye-contingently...
Participants made a saccade from one biological-motion figure to another and had detect saccadecontingent changes in either the walker which eyes were sent (the target) or that served as launch site source). Intrasaccadic displacements both source target relatively hard detect, whereas walkers' depth orientation readily noticed, indicating previous findings on within-object saccades generalize between-objects saccades. Contrary predictions derived theories assign privileged status target,...
To account for location-dependent and location-independent preview benefits in transsaccadic object perception, J. M. Henderson (1994) D. Anes proposed a dual-route model which both episodic representations long-term memory store information across saccade. Four experiments are reported the was assessed. Preview saccade target objects were found to be location independent, whereas flanker dependent. These results support single-route, 2-stage of perception. First, preattentive files set up...
How familiar and unfamiliar faces are perceived remains largely unknown. Two views have dominated this field of research. On the one hand, recordings eye fixations on [10] response classification experiments [2] suggest that a face is processed in terms its individual components, or facial features (mouth, eyes, nose, . ), strategy called analytical processing. other there strong behavioral evidence for interdependence processing different [6,7], rather supporting holistic [7]. According to...
Abstract The present study investigated whether and how the location of bystander objects is encoded, maintained, integrated across an eye movement. Bystander are that remain unfixated directly before after saccade for which transsaccadic integration being examined. Three experiments reported examine coding relative to future target object, source other objects. Participants were presented with a random‐dot pattern made from central designated target. During this position single was changed...
In four experiments, we examined the hypothesis that a presaccadic extrafoveal preview of an object normally affects subsequent postsaccadic foveal processing object. On each trial, viewers inspected array three objects and were instructed to remember one characteristic (in-depth orientation, image-plane color, or semantic category). During saccade objects, intrasaccadic change in in-depth orientation color could occur its effect on gaze duration was analyzed. When participants objects'...
Human observers explore scenes by shifting their gaze from object to object. Before each eye movement, a peripheral glimpse of the next be fixated has however already been caught. Here we investigate whether perceptual organization extracted such preview could guide analysis same during fixation. We observed that participants were indeed significantly faster at grouping together spatially separate elements into an contour, when contour had also grouped in display. Importantly, this...