Recurrence Quantification Analysis of Postural Stability with Pendant-Based IMU under Varying Balance Conditions

Recurrence quantification analysis of postural fluctuations.

A technique (recurrence quantification analysis; RQA) for analyzing center of pressure (COP) signals is presented and applied to data obtained by having participants stand with the head forward or sideways and with eyes open or closed. RQA is suitable for short, nonstationary signals and quantifies dynamical (deterministic) structure and nonstationarity. Results indicated that vision affects th...

Correlation between new activity-based balance index with accelerometer data and postural balance in elderly woman

Stability and balance in the elderly are measured using several methods. The purpose of this study was to introduce a new activity based balance index using accelerometer and determine the relationship between this index and postural stability in older woman. Materials and Methods: Ninty-two elderly women were selected and participated in this study. For measuring balanace, One Leg Stance, Berg...

Application of Recurrence Quantification Analysis: Influence of Cognitive Activity on Postural Fluctuations

Color-based visual servoing under varying illumination conditions

Visual servoing, or the control of motion on the basis of image analysis in a closed loop, is more and more recognized as 9 an important tool in modern robotics. Here, we present a new model-driven approach to derive a description of the motion 10 of a target object. This method can be subdivided into an illumination invariant target detection stage and a servoing process 11 which uses an adapt...

Postural Stability 1 Measures of Postural Stability

Dynamic posturography has become an important tool for understanding standing balance in clinical settings. A key test in the NeuroCom dynamic posturography system, the Sensory Organization Test (SOT) provides information about the integration of multiple components of balance. The SOT test leads to an outcome measure called the equilibrium score (ES), which reflects the overall coordination of...