Anzeige
Erschienen in:
2014 | OriginalPaper | Buchkapitel
Experimental Validation of a Rapid, Adaptive Robotic Assessment of the MCP Joint Angle Difference Threshold
verfasst von : Mike D. Rinderknecht, Werner L. Popp, Olivier Lambercy, Roger Gassert
Erschienen in: Haptics: Neuroscience, Devices, Modeling, and Applications
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
This paper presents an experimental evaluation of a rapid, adaptive assessment of the difference threshold (DL) of passive metacarpophalangeal index finger joint flexion using a robotic device. Parameter Estimation by Sequential Testing (PEST) is compared to the method of constant stimuli (MOCS) using a two-alternative forced-choice paradigm. The pilot study with \(13\) healthy subjects provided DLs within similar ranges for MOCS and PEST, averaging at \(2.15^{\circ }\pm 0.77^{\circ }\) and \(1.73^{\circ }\pm 0.78^{\circ }\), respectively, in accordance with the literature. However, no significant correlation was found between the two methods (\(r(11) = 0.09\), \(p = 0.762\)). The average number of trials required for PEST to converge was \(58.7\pm 17.6\), and significantly lower compared to \(120\) trials for MOCS (\(p < 0.001\)), leading to an assessment time of under \(15\) min. These results suggest that rapid, adaptive methods, such as PEST, could be successfully implemented in novel robotic tools for clinical assessment of sensory deficits.