#Ibox tracker manual

We found that the height of the reached target affects both force calibration and kinematics, while its weight affects only the force calibration when post-stroke and healthy individuals perform a reach-to-grasp task. In this study, we assess force regulation and kinematics when reaching, grasping, and lifting a cup of two different weights (empty and full), located at three different heights, in a total of 46 participants: 30 sub-acute stroke participants, and 16 healthy individuals.

There is, at present, incomplete information about how individuals with stroke regulate the application of force and control their movement when reaching, grasping, and lifting objects of different weights, located at different heights. Impairment in force regulation and motor control impedes the independence of individuals with stroke by limiting their ability to perform daily activities. Future work is required to establish measurement properties in patients with neurological and psychiatric disorders. Tablet-based components of dexterity complement conventional clinical dexterity assessments. Age-related decline in performance and association with finger force-sensor measures support validity of tablet measures. Most tablet-based dexterity measures showed good-to-excellent reliability (ICC ≥ 0.60) except for unwanted movements during multi-finger tapping. Inter-task correlation among tablet-derived measures was weak. No significant correlations between tablet measures and BBT or MPUT were found. Reaction times correlated with those obtained using a finger force-sensor device. Age correlated with slower and more variable reaction times in finger recognition, less correct trials in multi-finger tapping, and slower line-tracking. Inter-session learning occurred in some measures. Poor to excellent reliability was found for correct trials across tasks, and reliability was poor for unwanted movements. Most timing measures showed excellent reliability. Task validity was evaluated in 54 healthy subjects (mean age 49 years, range: 20–78 years) by correlating tablet measures with age, clinical dexterity assessments (time taken to pick-up objects in Box and Block Test, BBT and Moberg Pick Up Test, MPUT) and with measures obtained using a finger force-sensor device. Relative reliability (Intra-class correlation, ICC) and absolute reliability (Standard error of measurement, SEM) were established. To study inter-rater reliability, 34 healthy subjects (mean age 35 years) performed the tablet tasks twice with two raters. (5) Line-tracking to assess movement speed and accuracy while tracking an unpredictably moving line on the screen with the fingertip (duration, error). (4) Sequence tapping to assess production and memorization of visually cued finger sequences (successful taps). (3) Multi-finger tapping to assess independent finger movements (reaction time, correct trials, unwanted finger movements). (2) Rhythm tapping to evaluate timing of finger movements performed with, and subsequently without, an auditory cue (inter-stimulus interval).

The subject taps with the finger indicated on a virtual hand in three orientations (reaction time, correct trials). Tasks included: (1) Finger recognition to assess mental rotation capacity. Aim: to test reliability and validity of tablet-based dexterity measures in healthy participants.

#Ibox tracker manual

We developed five tablet-based tasks (applications) to measure multiple components of manual dexterity.