Person
Biljana Petreska von Ritter-Zahony
This person is no longer with EPFL
Related publications (14)
The variability of contact position errors in apraxic imitation
Aude Billard, Biljana Petreska von Ritter-Zahony
Apraxia is a poorly understood disorder of voluntary movement that is not due to basic sensory, motor or cognitive deficits. We conducted a study on the imitation of meaningless gestures in apraxic patients with left fronto-temporo-parietal lesions. In a f ...
2010Revisiting a study of callosal apraxia: The right hemisphere can imitate the orientation but not the position of the hand
Aude Billard, Biljana Petreska von Ritter-Zahony
Callosal disconnection can reveal asymmetrical contributions of the two brain hemispheres to praxis. In this paper, we revisit a study of a patient with callosal disconnection (Goldenberg et al., 2001, Neuropsychologia, 39:1432–1443), who perfectly imitate ...
Elsevier2010Modeling the neural correlates of imitation from a neuropsychological perspective
Biljana Petreska von Ritter-Zahony
Imitation is a fundamental mechanism by which humans learn and understand the actions of others. This thesis addresses the low-level neural mechanisms underlying the imitation of meaningless gestures, using tools from computational neuroscience. We investi ...
EPFL2009Movement Curvature Planning through Force Field Internal Models
Aude Billard, Biljana Petreska von Ritter-Zahony
Human motion studies have focused primarily on modeling straight point-to-point reaching movements. However, many goal-directed reaching movements, such as movements directed towards oneself, are not straight but rather follow highly curved trajectories. T ...
2009What apraxia tells us about the brain hemispheres’ contributions to human imitation
Aude Billard, Biljana Petreska von Ritter-Zahony
Praxic functions are frequently altered following brain lesion, giving rise to apraxia - a complex pattern of impairments that has proven difficult to assess or interpret. Here we revisit a study on imitation of meaningless gestures in a patient with disco ...
2009Neurocomputational modeling of imitation deficits
Aude Billard, Biljana Petreska von Ritter-Zahony
We are interested in the question of human imitation and we address this through convergent evidence from neuroscience. The rationale of our work is that the nature of imitation deficits following brain lesion can unveil some of the neural and computationa ...
2008A Neural Model of Demyelination of the Mouse Spinal Cord
Biljana Petreska von Ritter-Zahony
This paper presents a neural network model of demyelination of the mouse motor pathways, coupled to a central pattern generation (CPG) model for quadruped walking. Demyelination is the degradation of the myelin layer covering the axons which can be caused ...
2008Modeling Unconstrained Self-Oriented Movements
Aude Billard, Biljana Petreska von Ritter-Zahony
Although straight point to point movements have been successfully modeled until now, many reaching movements are not straight neither in hand Cartesian nor in joint angles space, such as for example movements directed towards oneself. Addressing the genera ...
2008Apraxia: a review
Olaf Blanke, Aude Billard, Biljana Petreska von Ritter-Zahony
Praxic functions are frequently altered following brain lesion, giving rise to apraxia - a complex pattern of impairments that is difficult to assess or interpret. In this chapter, we review the current taxonomies of apraxia and related cognitive and neuro ...
Elsevier2007Auditory motion affects visual biological motion processing
Olaf Blanke, Aude Billard, Biljana Petreska von Ritter-Zahony
The processing of biological motion is a critical, everyday task performed with remarkable efficiency by human sensory systems. Interest in this ability has focused to a large extent on biological motion processing in the visual modality (see, for example, ...
Elsevier2007