BACKGROUND This study looked to validate the acoustic wave technology of the Storz-D-Actor that inflicted a consistent closed-head, traumatic brain injury (TBI) in rats. We studied a range of single pulse pressures administered to the rats and observed the resulting decline in motor skills and memory. Histology was observed to measure and confirm the injury insult. METHODS Four different acou...

amyotrophic lateral sclerosis (als) is a progressive neurodegenerative disorder of the motor neurons in the spinal cord, brainstem, and motor cortex. ten percent of als cases are familial with both autosomal dominant and recessive modes of inheritance. mutations in the copper/zinc superoxidedismutase-1 (sod-1) gene, the first gene linked with als, result in sod-1 gene accounting for ~ 20% of fa...

Degeneration of several brainstem nuclei has been long related to motor and non-motor symptoms (NMSs) of Parkinson's disease (PD). Nevertheless, due to technical issues, there are only a few studies that correlate that association. Brainstem auditory-evoked potential (BAEP) and vestibular-evoked myogenic potential (VEMP) responses represent a valuable tool for brainstem assessment. Here, we inv...

For a viewpoint of controllability, characterization and control method of a surface acoustic wave (SAW) motor were studied. The speed of the SAW motor has strong non-linearity in relation to the driving voltage i.e. the dead zone. Then, influence on drive performance by dead zone of SAW motors was examined. The experimental results show the threshold of the dead zone didn’t change while the mo...

Methods. After spinal anaesthesia, sedation was achieved using a propofol target-controlled infusion (TCI) system to achieve a score of 4 on the Wilson sedation scale. The excitability of spinal motor neurones was determined by measuring the left median nerve F wave. F-wave persistence and the F/M ratio were recorded at pre-sedation as the control, during sedation, at arousal by mild physical s...

This paper presents a novel motor speed measurement method and experimental results using the fast Fourier transform (FFT). Motor speed is obtained using the square wave output signal of a speed sensor. In the proposed method, the speed can be measured in a wide range, and transient speed changes can also be clearly observed. The experiments were conducted during start-up and in steady state. T...

A miniature linear synchronous motor was designed, fabricated and tested. Actuation was achieved through interaction of traveling magnetic wave, generated by linear array of microcoils on the stator, and permanent magnets on the rotor. Two configurations of the motor were investigated. One with a single hand-assembled permanent magnet on rotor and corresponding array of multiturn microcoils; th...

The paper by Ge et al (see page 150) may be an important milestone in the investigation of the pathophysiological substrate of the myofascial trigger point (MTrP). The paper appears to show that there is a significantly reduced threshold and increased amplitude of an electrophysiological reflex (similar to the Hoffman (H-) reflex) when it is stimulated electrically from within an MTrP compared ...

Variable frequency devices are widely used in many power systems. A current tracking based VFD is proposed in this paper. The output current is firstly fed back and compared with a standard sine wave, the difference of them is then used for a PI regulator to control the PWM signal, so as to change the output current accordingly to make it approach the standard sine wave. Simulation and experime...