Radek Ptak
Function: Professeur associé
Group name: Spatial attention, perception and action
Group type: Main
Affiliations: Faculty of Medicine, Geneva University Hospitals, Department of Clinical Neurosciences
Domains: Perception, Attention and Cognition
Keywords: cognitive processes, neuropsychological disorders, spatial neglect, spatial representation
Research activities
The main research interest of our group is to analyse cognitive processes that enable humans to build a coherent representation of space and to select the most relevant among several stimuli. We are studying the functional characteristics and neuroanatomy of neuropsychological disorders such as spatial neglect, extinction, optic ataxia and visual agnosia as well as electrophysiological mechanisms of attention and eye movement programming in healthy subjects. The techniques used to study these phenomena involve measures of reaction time, eye movements, 3D-motion analysis, and ERPs.
Key publications
The Dorsal Frontoparietal Network: A Core System for Emulated Action.
Spatial neglect and the neural coding of attentional priority.
The frontoparietal attention network of the human brain: action, saliency, and a priority map of the environment.
The dorsal attention network mediates orienting toward behaviorally relevant stimuli in spatial neglect.
A non-spatial bias favouring fixated stimuli revealed in patients with spatial neglect.
Videos
Contact
Département des neurosciences cliniques
HUG
Email: Radek.Ptak@hcuge.ch