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Eye-gaze as a form of human machine interface holds great promise for improving the way we interact with machines. Eye-gaze tracking devices that are non-contact, non-restrictive, accurate and easy to use will increase the appeal for including eye-gaze information in future applications. The system we have developed and which we describe in this paper(More)
Digital bandpass filtering (300-2500 Hz) designed for zero phase shift was applied to somato-sensory evoked potentials recorded with cephalic bipolar montages. Four consistent negative and corresponding positive peaks with latencies of about 16, 18, 19, and 20 msec were elicited with median nerve stimulation. Peroneal nerve stimulation also elicited 4(More)
This paper presents a summary of the design and implementation of a force-reflecting controller for conventional heavy duty hydraulic machines. The unsuitability of direct force feedback with rate control has been shown analytically and confirmed on a simulator of a typical hydraulic machine. A novel stiffness control scheme was developed to circumvent this(More)
The reconstruction of functions from their samples at nonuniformly distributed locations is an important task for many applications. This paper presents a sampling theory which extends the uniform sampling theory of Whittaker et ul. [ll] to include nonuniform sample distributions. This extension is similar to the analysis of Papoulis [15], who considered(More)
— This article describes a vision-based system for 3D localization of a mobile robot in a natural environment. The system includes a mountable head with three on-board CCD cameras that can be installed on the robot. The main emphasis of this work is on the ability to estimate the motion of the robot independently from any prior scene knowledge, landmark or(More)
—Analysis and estimation of friction and compensation for its effects in the control of an electrohydraulic manipulator is addressed in this paper. The specific hydraulic manipulator is an integral part of an automated fish processing machine which has been developed in our laboratory. The analysis reveals that considerable static and dynamic friction(More)
A novel approach is presented for using an eye tracker-based reference instead of EOG for methods that require an EOG reference to remove ocular artifacts (OA) from EEG. It uses a high-speed eye tracker and a new online algorithm for extracting the time course of a blink from eye tracker images to remove both eye movement and blink artifacts. It eliminates(More)
The human interface of a Caterpillar 325FB feller-buncher was modiied to allow the operator to use i a 5-DOF joystick, and ii a 6-DOF magnetically-levitated joystick with stiiness feedback. While the operator commanded the velocity of the endpoint, an onboard computer system managed total system power, solved the inverse kinematics, servoed the joint(More)
We propose a novel metric for quantitatively evaluating ocular artifact (OA) removal methods on real electroencephalogram (EEG) data. For real EEG, existing metrics measure the amount of artifact removed. Our metric measures how much a given method is likely to distort the underlying EEG. The new metric was used to evaluate two existing OA removal(More)