Slow phase velocity
Webb(B) The plotting of slow-phase velocity of nystagmus shows that a background right-beating nystagmus is reversed every 55 seconds to left-beating nystagmus which lasts about 17 seconds. WebbHowever, the slow phase velocity envelope during per- or post-rotatory nystagmus is more accurately represented by two exponential modes. One represents activity in the vestibular nerve induced by deflection of the cupula, the other by activation that the input from the canals produces in the central velocity storage integrator.
Slow phase velocity
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Webb13 sep. 2004 · The nystagmus intensity is defined as the slow-phase velocity (SPV). To measure SPV for one nystagmus beat, the examiner has to determine the distance that … WebbLong-time coherent integration works to significantly increase the detection probability for maneuvering targets. However, during the observation time, the problems that often tend to occur are range cell migration (RCM) and Doppler frequency cell migration (DFCM), due to the high velocity and acceleration of the maneuvering target, which can reduce the …
WebbHowever there was a small, but significant (P = 0.05, t-test), improvement in the nasal-temporal (N-T) slow-phase velocity in the affected eyes of the experimental group, which was not correlated with improvements in visual acuity or linked to the presence of strabismus and/or amblyopia. WebbWith regards to the propulsive phase the main findings were that: 1) for both the CMJ and DJ, WR resulted in a significant decrease in jump height (CMJ: -12 to -17%, DJ: -10 to -14%), relative peak power (CMJ: -8 to -17%, DJ: -7 to -10%) and peak velocity (CMJ: -4 to -7%, DJ: -3 to -8%); 2) there was no significant effect of load placement; and, 3) PJ reactive …
Webb1 apr. 2012 · Identifying Spontaneous Nystagmus. In Barber and Stockwell’s classic primer on electronystagmography (1977), spontaneous nystagmus is defined as present if it is persistent in three or more head positions, transient in four or more head positions, and of fairly consistent slow phase eye velocity greater than six degrees per second. WebbFollowing from this literal definition, jerk nystagmus consists of repetitive cycles of a slow drift of the eyes (the slow phase) followed by an oppositely directed quick movement (the fast phase). When pathologic, jerk nystagmus prevents steady visual fixation.
Webb15 feb. 2024 · Each condition is giving a maximum Slow Phase Velocity (SPV) value and a Fixation Index value (FI). All 4 SPV values are added and a total SPV values is also …
When light propagates through a material, it travels slower than the vacuum speed, c. This is a change in the phase velocity of the light and is manifested in physical effects such as refraction. This reduction in speed is quantified by the ratio between c and the phase velocity. This ratio is called the refractive index of the material. Slow light is a dramatic reduction in the group velocity of light, not the phase velocity. Slow light effects are not due to abnormally large refractive indices, … cinecity goesWebbVestibular neuritis is the most common cause of the acute vestibular syndrome, which is characterized by continuous vertigo and spontaneous nystagmus lasting days. It may be mimicked by central causes, including stroke, but in the hands of subspecialists, the HINTS+ (Head Impulse, Nystagmus, Test of Skew, where + is the addition of a bedside … cinecity marconWebb24 juni 2015 · EOG usually yielded lower velocities than VOG for the same slow phase eye movement. Based on these data, it appears that our normal values for the sum of four caloric tests should be reconsidered in our lab. The traditional upper limit of normal for the sum is 30 d/s using EOG methods. cine city kinoWebb9 maj 2024 · To see this, consider the wave: Acos(ωt − βz + ψ) where ω = 2πf is angular frequency, z is position, and β is the phase propagation constant. At any given time, the … cinecity münchenWebbPerformance for a runner can be represented by the relation of his/her personal power (velocity) to time to exhaustion (time limit).1 There are particular velocities that delineate intensity domains which are determined by oxygen uptake (V̇o2) and blood lactate response versus time.2,3 We are going to use them to define the slow phase of V̇o2 … cinecity les hallesWebbMany translated example sentences containing "slow phase velocity" – German-English dictionary and search engine for German translations. cinecity middelburgWebbThe nystagmus is more intense, with a higher velocity of the slow phase, when patients gaze in the direction of the quick phase . Two main hypotheses have been invoked to account for AL. First, AL has been attributed to a slowly developing, adaptive mechanism that lessens the slow-phase velocity of a pathological SN when gaze is in the direction … cinecity multiplex