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Biomedical subjects

R H Eckhouse

Publications and source records attributed to R H Eckhouse.

6 recordsLinked to original sources
PubMed2001

Retraining reaching in chronic stroke with real-time auditory feedback.

Stroke is the third leading cause of death in the United States. The aim of the present study was to enhance the motor recovery of patients in the chronic stroke period by means of upper extremity trajectory modification through real-time auditory feedback. A system of hardware, software, and feedback algorithms was developed. Two groups of patients in the chronic stroke period were trained on the system, one with practice and feedback and one with practice alone. Twenty reach parameters were defined and analyzed for differences between the first and last training sessions, between adaptation and learning trials, and among three targets. This study demonstrated that modification of the reach trajectory can be accomplished during the chronic stroke period either with practice alone or through practice accompanied by auditory feedback. However, improved path performance requires auditory feedback training, and cannot be achieved by practice alone.

Acoustic Stimulation↗
PubMed1996

A comparison of kinematic recording instruments.

Kinematics, the study of motion, is employed in numerous biomechanics and human performance investigations. The types of instrumentation used in these studies vary at fundamental technical levels, making it difficult to relate results from studies carried out at different laboratories using different instrumentation. A project was designed to compare two commonly used types of kinematic recording techniques, i.e., the 6 df electromagnetic tracker system and the video motion analysis system. A four-level testing and comparison method was conducted involving static and dynamic inanimate objects, as well as human subjects under static and dynamic conditions. It was demonstrated that for rigid body inanimate objects the two systems produce nearly identical values under stationary conditions and are comparable under moving conditions. The systems show only trivial discrepancies in static human body measurements, and perform in qualitatively similar ways on human motion.

Analysis of Variance↗
PubMed1990

Sensory feedback and the impaired motor system.

A group design study was carried out using regulated feedback to enhance functional recovery in stroke patients. Patients trained on three computerized tasks aimed at improving guided limb motion in the hemiplegic arm. The therapeutic group was able to make use of the sensory feedback to outperform the control group in each of the three tasks. The therapeutic group also showed an adaptation of the improved performance on the three tasks. Further investigation is required to demonstrate that such sensory feedback training results in a corresponding improvement in activities of daily living skills.

Activities of Daily Living↗
PubMed1989

A computerized kinematic diagnostic system.

This paper describes the instrumentation developed for a clinical system that measures upper extremity kinematics in normal and cerebral palsied children. The ability to diagnose cerebral palsy during early and midinfancy is influenced by the fact that movement and postural abnormalities become apparent only over time, and are not readily detectable until there is sufficient abnormality so that it can be viewed by gross inspection during clinical examination. The methodology presented here serves to discriminate normal from deviant movement at an earlier age than what is presently possible, and may also result in alternative therapeutic intervention.

Biomechanical Phenomena↗