Distributed model of control of saccades by superior colliculus and cerebellum

1998 Special Issue Distributed model of control of saccades by superior colliculus and cerebellum Philippe Lefe `vrea,b , Christian Quaiaa,c , Lance M. Opticana, * a Laboratory of Sensorimotor Research, National Eye Institute, Bethesda, MD 20892, USA b... More

1998 Special Issue Distributed model of control of saccades by superior colliculus and cerebellum Philippe Lefe `vrea,b , Christian Quaiaa,c , Lance M. Opticana, * a Laboratory of Sensorimotor Research, National Eye Institute, Bethesda, MD 20892, USA b Laboratory of Neurophysiology and CESAME, UCL, Louvain-La-Neuve, Belgium c DEEI—Universita ` degli Studi di Trieste, Trieste, Italy Received and accepted 5 May 1998 Abstract We investigate the role that superior colliculus (SC) and cerebellum (CBLM) might play in controlling saccadic eye movements. Even though strong experimental evidence argues for an important role for the CBLM, the most recent models of the saccadic system have relied mostly on the SC for the dynamic control of saccades. In this study, we propose that saccades are controlled by two parallel pathways, one including the SC and the other including the CBLM. In this model, both SC and CBLM provide part of the drive to the saccade. Furthermore, the CBLM receives direc Less