Characteristics
- When measuring the ERP of the right parietal lobe during extinction events, EEGs do not display the P1 or N1 waves otherwise evidenced in healthy bilateral response.
- When presented with stimuli, eye saccades from fixation point are more common in extinction patients, are longer in duration, and show ipsilesional bias in movement.
- Some evidence for a slight increase in detection of eccentric stimuli in the ipsilesional visual field – i.e. slightly improved peripheral vision.
- Patients show increased difference in reaction time (crossed-uncrossed difference) for processing in contralesional and ipsilesional visual hemispheres.
Read more about this topic: Visual Extinction