692
Ilaria Di Matteo
The coordinate systems that the human brain uses to represent objects
in space are still under debate. They can be studied by analyzing
patients with a lesion in the parietal lobe, since these patients fail
to respond to stimuli that are presented contralateral to the brain
lesion: a lesion in the right hemisphere leads the subject to ignore
the left side of the space. But what is left? We analyze an
experiment where neglect patients perform visually guided saccades
under different experimental conditions. Determining where neglect
patients have longer reaction time and higher probability of errors
helps to identify the dominant coordinate system that the brain uses.