@inproceedings{515f31f19a274698826ea7e6d70faea0,
title = "Modeling and filtering athetoid movement for assistive computer interfaces",
abstract = "This paper presents a novel approach to modeling and filtering of athetoid motion for use in assistive computer interfaces during targeting tasks such as clicking on icons. Data were recorded from a subject with athetosis during unassisted icon-clicking trials with an isometric joystick. In order to facilitate development and preliminary testing of filter designs without the cost and difficulty of repeated testing with subjects with athetosis, a quantitative model of the recorded subject data was developed using Pseudoinverse methods. Using this model within the visuomotor control loop for the icon-clicking task, a prediction filter was then developed to reduce the targetacquisition time for the user. The filter consists of an {"}autoregressive stretching window{"} system which selects five data points evenly distributed across the input and output histories to predict the intended target, together with a second-order system that smoothes the movement of the cursor. The filter has demonstrated a reduction of up to 49% in target acquisition time in preliminary experiments with the athetoid model.",
keywords = "Athetosis, GUIs, Human-computer interaction, Rehabilitation engineering",
author = "Olds, {Kevin C.} and Sara Sibenaller and Cooper, {Rory A.} and Ding Dan and Riviere, {Cameron N.}",
year = "2008",
language = "English (US)",
isbn = "9780889867406",
series = "Proceedings of the 4th IASTED International Conference on Telehealth and Assistive Technologies, Telehealth/AT 2008",
pages = "123--128",
booktitle = "Proceedings of the 4th IASTED International Conference on Telehealth and Assistive Technologies, Telehealth/AT 2008",
note = "4th IASTED International Conference on Telehealth and Assistive Technologies, Telehealth/AT 2008 ; Conference date: 16-04-2008 Through 18-04-2008",
}