Selective attention for the component features of visual stimuli. Cellular mechanisms.

Starting date
January 1, 2001
Duration (months)
Neurosciences, Biomedicine and Movement Sciences
Managers or local contacts
Chelazzi Leonardo
Flanker Task, Negative Priming

By means of a variety of behavioral paradigms in humans and electrophysiological experiments in monkeys we have tried to demonstrate the existence of attention mechanisms allowing the selection of individual features (e.g. color, shape, etc.) of multi-dimensional visual stimuli. Various paradigms have been used for the experiments on human subjects, such as the “flanker task” and the “negative priming” paradigm. For the experiments on non-human primates we have recorded the firing activity of single neurons from the brain of animals actively engaged in performing a varietay of perceptual tasks.


C.N.R. Consiglio Nazionale delle Ricerche
Funds: assigned and managed by the department
James S. McDonnell Foundation
Funds: assigned and managed by the department

Project participants

Leonardo Chelazzi
Full Professor

Collaboratori esterni

Anling Rao
Oxford University, UK
Anna Christina Nobre
Oxford University, UK
Alessandra Fanini
Harvard University, Boston USA


Research facilities