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3D motion analysis was applied to assess goal-directed arm movements in 15 children with cerebral palsy (CP) before and after four weeks of home training with low-cost motion interactive video games. The results indicated that the children improved movement precision when playing the virtual games, improved movement smoothness when reaching for real targets, and reduced the involvement of the trunk...
This paper describes a video game for the rehabilitation of the pronation and supination movements of children with cerebral palsy. It is used as an interface for a robot that is currently under development. The game was programmed in LabVIEW and MATLAB is used for analyzing the results. It simulates a formula one racecar on a racetrack. Its objective is to keep the car inside the racetrack's limits...
Backpack or school bag weight carried by children has raised concerns in worldwide countries over recent decades. School going children face a major problem because of the heavy weight they carry to school everyday as it leads to many problems such as a bent posture and decreased work efficiency. The prescribed weight to be carried by children has been determined to be 10-15% of their body weight;...
Recent studies have found the consistent contralateral high gamma activities in sensorimotor cortex in adults during a unilateral finger movement. However, no study has ever reported the same phenomenon in children. We hypothesized that the contralateral high gamma activities also exist in children during a unilateral finger movement. Sixty normal children (6-17 years old) were studied with a 275-channel...
Recent increase in the number of Autism cases has triggered an alarm in our society. Lack of effective diagnostics, interventions and associated cost makes early intervention and long term treatment difficult. In this paper, we describe novel methods to assist management by automatically detecting stereotypical behavioral patterns using accelerometer data. We use the Iterative Subspace Identification...
This paper aims to investigate how robotic devices can be used to understand the mechanism of sensorimotor adaptation in pediatric subjects affected by hemiparetic cerebral palsy. Previous studies showed how healthy adults, after training in presence of a systematic structured disturbing force field, show an “after effect” and therefore they highly adapt and compensate the external disturbance. An...
We have developed a vector Doppler ultrasound imaging method to directly quantify the magnitude and direction of muscle and tendon velocities during movement. The goal of this study was to evaluate the feasibility of using vector Tissue Doppler Imaging (vTDI) for estimating the tibialis anterior tendon velocities during dorsiflexion in children with cerebral palsy who have foot drop. Our preliminary...
In this paper a new vision based interface (VBI) for children with cerebral palsy is presented. The VBI is implemented for the interaction between children and computer. The VBI detects and tracks the movement of the hand, foot or head of the user. These movements are translated into movements of the cursor on the screen of the computer. The evaluation of system user-VBI is based on HAAT model. The...
Cerebral palsy is a non-progressive neurological disorder caused by disturbances to the developing brain. Physical and occupational therapy, if started at a young age, can help minimizing complications such as joint contractures, and can improve limb range of motion and coordination. While current forms of therapy for children with cerebral palsy are effective in minimizing symptoms, many children...
The current study introduces a novel rehabilitation robot for treatment of impaired ankle in children with cerebral palsy (CP). The treatment consisted of passive stretching under intelligent control and active movement training with motivating game-playing using the portable robot. After 18 sessions of training (3 sessions/week for 6 weeks), we found significant improvement in 12 children with CP...
Overlapping threshold of costal cartilage and muscle tissue is the main issue of pectus excavatum(PE) modeling all the time. A rapid and accurate three dimensional (3D) model was described based on Mimics10.01. The contrast of thorax CT image can be strengthened in advance. The pixels of rigid skeleton and costal cartilage were separated by threshold segment, therefore, we could get rigid skeleton'3D...
As part of a larger study evaluating the effects of trunk restraint on the kinematics of arm movements in children with cerebral palsy (CP), we evaluated the level of cooperation and satisfaction of the children when practicing arm and hand movements during play-like activities in a physical environment (PE) compared to a video-capture based (IREX, GestureTek) virtual environment (VE) using 5-point...
The purpose of this study was to provide product designer with the anthropometric dimensions of hand for children and compare the dimensions of spoon sizes with anthropometric database and recommend appropriate solutions for design. Two hundred and five subjects who age ranged from 3 to 10 years old were separated into eight stratifications for analysis. Six dimensions of hand were measured by digital...
This study applies an upper extremity model to analyze motion in 25 children with cerebral palsy using posterior walkers. The study indicates that throughout a gait cycle, the shoulders and wrist are in extension and the elbows are flexed. It also reveals that the elbows are the most asymmetrical joint of the upper extremities during walker-assisted ambulation.
Spastic hypertonia involving spasticity and/or contracture is a major source of disability in cerebral palsy and other neurological impairments like stroke. Several measures have been used to assess the reflex hyperexcitability and hypertonus associated with spasticity, including the Ashworth scale, tendon reflex scale, pendulum test, mechanical perturbations and passive joint ROM. These measures...
For children with cleft palate, oral function is impaired. The hypothesis is that the stress and strain distribution within the affected maxilla with a cleft during functional tasks such as biting and chewing is abnormal and can significantly affect bone development in the growing child. To test this hypothesis, a three-dimensional finite element model of a pediatric subject-specific maxilla with...
Virtual reality (VR) has the potential to offer experiences which are engaging and rewarding. In VR, the focus is shifted from the person's efforts in producing a movement or completing a task to that of interaction with the virtual environment. We have found that participants place value and meaning on and enjoy the activities programmed. Virtual reality interventions have been shown to improve cognitive...
A simple online system for collecting EMG data from surface recording electrodes and force data has been developed to study muscular weakness in multiple sclerosis (MS) patients and children. The parameters of force, integrated EMG, peak positive and negative amplitudes and zero-crossing frequencies are simultaneously recorded. Leg measurements show clear quantifiable differences between normal muscles...
A description is given of a simple, inexpensive, and yet functionally significant system that can analyze the distribution of pressure under the sole of the foot and can be used in clinical practice. The device has proved to be useful and helpful in planning and assuming a number of orthopedic procedures, analyzing the results of corrective procedures carried out on children suffering from paralytic...
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