User:Bioelectrical Compass/sandbox

"Applied Sciences Engineer" ¬ ± (e-) Sr. Oresteban Carabeo ENG/VAT/VSR

The Electronystagmography Test is one of the essential study used to clinically evaluate patients with dizziness, vertigo and abnormal balance dysfunction. The test provides an objective assessment of the oculomotor and vestibular systems that monitors the position and movements of the head to stabilize retinal images. This information is integrated with the visual system and spinal afferent in the brain stem to produce the vestibulo ocular reflex. Also, the Advantages Meets or exceeds the current ANSI standard Sampling Rate: 500 Hz. Essentially, the standard ENG oculomotor test battery consists of the following 3 parts:

1. Oculomotor Screening (CNS) Saccadic Evaluation Smooth Pursuit Tracking Optokinetic Testing Gaze Testing

2. Positional and Positioning (BPPV) 6 Static Positions 3 Dynamic Positions 1 USER CHOICE Position

3. Caloric Testing (PVS, CNS) Reduced Vestibular Response Directional Preponderance Fixation Suppression

The Vestibular Auto Rotation test Advantages are with an 18-second test (performed six times) of the high frequency horizontal and vertical VOR's for diagnosis, treatment planning, and monitoring of vestibular disease. The Testing with the VAT often identifies problems not found with other vestibular tests, because the VAT tests are natural, faster motions, and unlike other conventional vestibular testing, evaluates both the horizontal and vertical canals. Also, is magnificent for all Ages Pediatric or Adults to Provide Diagnostic Information to Monitor VOR Systems including Smooth Pursuit System and Vestibular Rehabilitation Objective Documentation. In addition, contains a Microchip Rotational Sensors that Senses Horizontal or vertical head motion. Finally, the most important test for the future is "Posturography" a term used to quantify postural control in an upright stance in either static or dynamic conditions. Among those techniques is CDP (COMPUTERIZED DYNAMIC POSTUROGRAPHY) specialized in clinical assessment to quantify the central nervous system adaptive mechanisms within sensory, motor, and central involvement. These mechanisms involved in the control of posture, balance, both in normal and abnormal conditions. These interactions among the sensory, motor, central processes,and through the many defects and impairments, requires different protocols to differentiate. The force plate platform is instrumented and connected to sensitive detectors, movement transducers which are able to detect the tiny oscillations of the body. The posturography makes it possible to quantify a subject's vestibular function because in certain testing conditions, the visual, proprioceptive systems cannot be used, and the subject must rely only on the vestibular system for balance stabilization.

Technical Specifications: Property                         Typical Value Mass                            4.7 kg [~10 lb] Overall dimensions              0.457×0.508×0.045 [18×20×1.75"] First natural frequency          60.2 Hz Overload capacity in Fz          2.2 kN [500 lbf] Range in Fz                      0−1.5 kN[0−~350 lbf] Resolution in Fz                 0.1 N[0.02 lbf] Accuracy                         2 N[0.45 lbf]                   Linearity                        0.2%

You can see forces as little as 0.1 N(0.4 oz f)which means your weight change as your heart beats. The signal to Noise Ratio of 106 dB or four parts per million with low power electronics providing simultaneous data of all load cells, eliminating timing errors. Also, the safety of this force platform are intrinsically safe from electrical shock because it cannot conduct electricity. During applications there are different modules configurations to operate in fields of Sports Medicine. Giving variations in specialized physical performance test, then measure, quantify and document the subject's progress. The static module quantify the subject's ability to minimize and control his/her sway as the symmetry of weight bearing. The limit of stability module quantify the subject's usable area of support to sway in any direction. Also, It helps to evaluate the effects of drugs, orthoses, neurological stimulation, manipulations and others. Use it as biofeedback rehabilitation tool for subjects affecting somatosensory feedback such as stroke, peripheral neuropathies, and others. The targeting module quantify the subject ability to quickly accurately shift body weight to desired position by evaluating not only the subject's weight shifting abilities, but also the reaction of time. It's a powerful tool to detect and diagnose motor coordination as well as neuromuscular pathologies. The sit to stand module allows to obtain accurate and objective measurements of time it takes a subject to perform the movements. It's a measure of physical performance that geared this module to measure whole body reaction time measuring such quantities for maximum forced generated, vertical acceleration, movement time and stabilization time. Also, it helps determine if the subject's is suffering from conditions such as postural hypotention or other conditions whose onset is triggered by large postural changes that can cause temporarily reduced performance and poor balance. Finally, the power module an absolute necessity to work with athletes. This module quickly estimates force, power, energy, acceleration, velocity and displacement at vertical direction of subject's positioned during the force platform testing. The ability to evaluate multiple repetitions of the same movement allows an important aspect like fatigue thresholds for the subject's training regimen conditions avoiding risk of over training consequences. moreover, can be used to evaluate non-isometric muscular activities of the lower limbs as well as of the torso or upper extremities. This can monitor a rehabilitation tool restoring the ability in a vertical direction movement in a subject  after injury, surgery, and illness.