We have investigated the functional anatomy of pursuit eye movements in humans with functional magnetic imaging. The performance of pursuit eye movements induced activations in the cortical eye fields also activated during the execution of visually guided saccadic eye movements, namely in the precentral cortex [frontal eye field (FEF)], the medial superior frontal cortex (supplementary eye fiel...

Visual tracking of moving targets requires the combination of smooth pursuit eye movements with catch-up saccades. In primates, catch-up saccades usually take place only during pursuit initiation because pursuit gain is close to unity. This contrasts with the lower and more variable gain of smooth pursuit in cats, where smooth eye movements are intermingled with catch-up saccades during steady-...

1. We recorded the simple spike firing rate of gaze velocity Purkinje cells (GVP-cells) in the flocculus/ventral paraflocculus of two monkeys during the smooth pursuit eye movements evoked by a target that was initially at rest, started suddenly, moved at a constant velocity, and then stopped. 2. For target motion in the preferred direction, GVP-cells showed a large transient increase in firing...

This paper introduces a novel lateral guidance strategy for autonomous ground vehicles operating in deformable environments. The combines geometric algorithm with dynamic controller to leverage the advantages of both methods. is based on modified Pure Pursuit method, which calculates error by considering parameter associated look-ahead distance. takes model uncertainties and time-variant parame...

The task of controlling a wheeled mobile robot is an important element navigation algorithms. control algorithm manages the robot’s movement in accordance with path determined by planner module, where accuracy mapping given route very important. Most often, robots are battery-powered, which makes minimizing energy consumption and shortening travel time issue. For this reason, work, was tested t...

Responses from 69 Purkinje cells in the flocculus and paraflocculus of two rhesus monkeys were studied during smooth pursuit of targets moving along circular trajectories and compared with responses during sinusoidal pursuit and fixation. A variety of interesting responses was observed during circular pursuit. Although some neurons fired most strongly in a single preferred direction during cloc...

Anatomical and physiological studies have shown that the "frontal pursuit area" (FPA) in the arcuate cortex of monkeys is involved in the control of smooth pursuit eye movements. To further analyze the signals carried by the FPA, we examined the activity of pursuit-related neurons recorded from a discrete region near the arcuate spur during a variety of oculomotor tasks. Pursuit neurons showed ...

Schizophrenia patients exhibit several smooth pursuit abnormalities including poor pursuit initiation. Velocity discrimination is also impaired and is correlated with pursuit initiation performance-suggesting that pursuit deficits are related to impairments in processing velocity information. Studies suggest that pursuit initiation is influenced by prior target motion information and/or expecta...

Both the frontal eye fields (FEFs) and supplementary eye fields (SEFs) are known to be involved in smooth pursuit eye movements. It has been shown recently that stimulation of the smooth-pursuit area of the FEF [frontal pursuit area (FPA)] in monkey increases the pursuit response to unexpected changes in target motion during pursuit. In the current study, we applied transcranial magnetic stimul...