Computer control of eye position and velocity
نویسندگان
چکیده
منابع مشابه
Vertical Eye Position Control in Darkness: Orbital Position and Body Orientation Interact to Modulate Drift Velocity
How stable is vertical eye-in-head position control in darkness when no visual targets are present? We evaluated this while varying both body-in-space orientation and eye-in-orbit position in six subjects who were free from oculomotor/vestibular disease. Vertical eye movements were monitored using a CCD-video tracking system, and results were confirmed on one subject with the magnetic search co...
متن کاملLinear regression of eye velocity on eye position and head velocity suggests a common oculomotor neural integrator.
The oculomotor system produces eye-position signals during fixations and head movements by integrating velocity-coded saccadic and vestibular inputs. A previous analysis of nucleus prepositus hypoglossi (nph) lesions in monkeys found that the integration time constant for maintaining fixations decreased, while that for the vestibulo-ocular reflex (VOR) did not. On this basis, it was concluded t...
متن کاملEye Gaze for Computer Control
This paper reports the results of experiments that were conducted with five subjects to determine the reliability of the use of Electro-ocular gram (EOG) for controlling computers. Experiments included vertical and horizontal eye motion. Consideration was given to identify a relationship between the angle of the gaze and signal that could be applied to cover all test subjects and generate the r...
متن کاملComputing three-dimensional eye position quaternions and eye velocity from search coil signals.
The four-component rotational operators called quaternions, which represent eye rotations in terms of their axes and angles, have several advantages over other representations of eye position (such as Fick coordinates): they provide easy computations, symmetry, a simple form for Listing's law, and useful three-dimensional plots of eye movements. In this paper we present algorithms for computing...
متن کاملPosition Tracking Control with Velocity from Accelerometer and Encoder
Being widely used in industrial systems and manufacturing lines, precision position control systems need to use high feedback control gains to reject disturbances. However, phase-lag in velocity estimation resulting from encoder measurement imposes a limitation on maximum allowable feedback gains, when system stability and control smoothness are concerned. In this paper, use of velocities deriv...
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ژورنال
عنوان ژورنال: Behavior Research Methods & Instrumentation
سال: 1975
ISSN: 1554-351X,1554-3528
DOI: 10.3758/bf03201308