Eye Tracking

o The role of the basal ganglia during free-viewing natural time-varying images


   It  is  well-known  that  diseases  in  basal   ganglia  result  in
   perturbations in ocular motor control.  Whereas significant efforts
   have  been  invested   in   documenting   many  characteristics  of
   oculomotor  control  in  such  patients,  they  have  been  largely
   restricted   to   laboratory   tasks,   i.e.,   tasks  designed  to
   characterize oculomotor parameters  under  conditions  that are not
   representative of the conditions  dictating  eye  movements in real
   life.  In the current research,  we  study  the  role  of the basal
   ganglia in gaze control under natural viewing conditions.

   We tracked the eye movements  of  Parkinsons  Disease (PD) patients
   during  free-viewing  natural  time-varying  images.   Among the PD
   patients we have access to are those that  are receiving deep-brain
   stimulation (DBS) to the subthalamic  nucleus  and  inner sector of
   the globus pallidus.  We measured the  statistics  of eye movements
   in these individuals, with and without DBS, and  compared them with
   normal controls, free-viewing the same natural time-varying images.
   Such experiments provide direct information  on  the involvement of
   the basal ganglia in gaze control.

( Papers' Index of Dawei Dong )


Send comments to Dawei Dong: dawei@ccs.fau.edu