Mario Kleiner

Mario Kleiner
Medical Innovations Incubator GmbH Tübingen · Psychtoolbox

About

30
Publications
9,503
Reads
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4,613
Citations
Citations since 2017
0 Research Items
3302 Citations
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20172018201920202021202220230100200300400500600
20172018201920202021202220230100200300400500600

Publications

Publications (30)
Article
Joint attention behaviors include initiating one's own and responding to another's bid for joint attention to an object, person, or topic. Joint attention abilities in autism are pervasively atypical, correlate with development of language and social abilities, and discriminate children with autism from other developmental disorders. Despite the im...
Article
Full-text available
Rapid integration of biologically relevant information is crucial for the survival of an organism. Most prominently, humans should be biased to attend and respond to looming stimuli that signal approaching danger (e.g. predator) and hence require rapid action. This psychophysics study used binocular rivalry to investigate the perceptual advantage o...
Data
Visual stimulus characteristics. Figure S1a shows the power spectral density of the Shepard stimulus (blue) and the starfield (green). Unlike the starfield stimulus, the Shepard stimulus shows the characteristic decrease in log power with increasing frequency resembling a 1/f curve. Figure S1b. The histograms show the absolute frequency of pixels i...
Data
Results of post-hoc t-tests for the non-motion tone (static sound) and no-sound control conditions comparing mean dominance durations (in sec) for looming vs. receding percepts. (DOC)
Article
Full-text available
When engaging in joint attention, one person directs another person's attention to an object (Initiating Joint Attention, IJA), and the second person's attention follows (Responding to Joint Attention, RJA). As such, joint attention must occur within the context of a social interaction. This ability is critical to language and social development; y...
Article
Full-text available
This paper investigates whether the greater accuracy of emotion identification for dynamic versus static expressions, as noted in previous research, can be explained through heightened levels of either component or configural processing. Using a paradigm by Young, Hellawell, and Hay (1987), we tested recognition performance of aligned and misaligne...
Poster
3D facial animation systems allow the creation of well-controlled stimuli to study face processing. Despite this high level of control, such stimuli often lack naturalness due to artificial facial dynamics (e.g., linear morphing). The present study investigates the extent to which human visual perception can be fooled by artificial facial motion. W...
Article
This chapter presents a psychophysical experiment in which 3D computer graphic methods were used to generate close-to-reality facial expressions to examine aspects of recognizing dynamic facial expressions in humans. The study shows that high-level aftereffects similar to those shown earlier for static faces are produced by dynamic faces. The findi...
Article
Full-text available
When the two eyes are presented with dissimilar images, human observers report alternating percepts-a phenomenon coined binocular rivalry. These perceptual fluctuations reflect competition between the two visual inputs both at monocular and binocular processing stages. Here we investigated the influence of auditory stimulation on the temporal dynam...
Article
Cooperative social interaction is critical for human social development and learning. Despite the importance of social interaction, previous neuroimaging studies lack two fundamental components of everyday face-to-face interactions: contingent responding and joint attention. In the current studies, functional MRI data were collected while participa...
Article
Full-text available
Although computer keyboards and mice are frequently used in measuring response times (RTs), the accuracy of these measurements is quite low. Specialized RT collection devices must be used to obtain more accurate measurements. However, all the existing devices have some shortcomings. We have developed and implemented a new, commercially available de...
Article
Full-text available
Insights from human perception of moving faces have the potential to provide interesting insights for technical animation systems as well as in the neural encoding of facial expressions in the brain. We present a psychophysical experiment that explores high-level after-effects for dynamic facial expressions. We address specifically in how far such...
Conference Paper
Full-text available
We present a system for realistic facial animation that decomposes facial motion capture data into semantically meaningful motion channels based on the Facial Action Coding System. A captured performance is retargeted onto a morphable 3D face model based on a semantic correspondence between motion capture and 3D scan data. The resulting facial anim...
Article
Communication plays a central role in everday life. During an average conversation, information is exchanged in a variety of ways, including through facial motion. Here, we employ a custom, model-based image manipulation technique to selectively “freez ” portions of a face in video recordings in order to determine the areas that are sufficient for...
Article
Communication plays a central role in everday life. During an average conversation, information is exchanged in a variety of ways, including through facial motion. Here, we employ a custom, model-based image manipulation technique to selectively "freeze" portions of a face in video recordings in order to determine the areas that are sufficient for...
Conference Paper
Full-text available
Conversing with others is one of the most central of human behaviours. In any conversation, humans use facial motion to help modify what is said, to control the flow of a dialog, or to convey complex intentions without saying a word. Here, we employ a custom, image-based, stereo motion-tracking algorithm to track and selectively "freeze" portions o...
Article
Full-text available
The MPI VideoLab is a custom built, flexible digital video-and audio recording studio that enables high quality, time synchronized recordings of human actions from multiple viewpoints. This technical report describes the requirements to the system in the context of our applications, its hardware-and software equipment and the special features of th...
Conference Paper
Manipulated still images of faces have often been used as stimuli for psychophysical research on human perception of faces and facial expressions. In everyday life, however, humans are usually confronted with moving faces. We describe an automated way of performing manipulations on facial video recordings and how it can be applied to investigate hu...
Article
Full-text available
In order to produce realistic-looking avatars, computer graphics has traditionally relied solely on physical realism. Research on cognitive aspects of face perception, however, can provide insights into how to produce believable and recognizable faces. In this paper, we describe a method for automatically manipulating video recordings of faces. The...
Conference Paper
Full-text available
Regardless of whether the humans involved are virtual or real, well-developed conversational skills are a necessity. The synthesis of interface agents that are not only understandable but also believable can be greatly aided by knowledge of which facial motions are perceptually necessary and sufficient for clear and believable conversational facial...
Article
Inverting the eyes and the mouth within the facial context produces a bizarre facial expression when the face is presented upright but not when the face is inverted (Thatcher illusion, Thompson, 1980). In the present study we investigated whether this illusion is part-based or holistic and whether motion increases bizarreness. Static upright Thatch...
Article
We present a psychophysical experiment on dy- namic facial expression recognition based on facial animation. The experiment investigates high-level after-effects in the per- ception of dynamic facial expressions. High-level after-effects have been reported before for the recognition of static faces (22)(16). Presentation of static 'anti-faces' bias...

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Projects (3)
Archived project
Not sure how ResearchGate's UI with its endless spam of status updates coerced me into creating a project here, but i'll certainly not waste my time updating yet another website. We have a easy to find website for that stuff, so don't expect any meaningful info from this location.