purpose : to demonstrate visual evoked potential (vep) changes in multiple sclerosis (ms) disease methods : a case series study of vep changes in forty-nine patients with definite, probable and possible diagnoses of ms referred to electrophysiology ward from january 2002 to december 2005. pattern vep was done for those with good visual acuity (va), and flash vep was done for those who did not h...

BACKGROUND Increased prevalence of visual impairments has been reported in preterm populations. However, it remains unclear about the long-term visual electrophysiological outcomes and their association with visual cognitive functions in premature infants. We investigated visual electrophysiological outcome of 2-year-old infants of different birth weights by flash visual evoked potentials (FVEP...

A cortical potential was evoked by the onset of horizontal drift of a previously stationary vertical square-wave grating (motion-on VEP). The influence of contrast on the principal VEP waves N2 and P2 (peak latencies 180-220 ms and 250-350 ms, respectively) was investigated in five subjects for velocities between 0.3 and 4.1 deg/s, a spatial frequency of 2.6 c/deg and a mean luminance of 17 cd/...

BACKGROUND Long Latency Auditory Evoked Potentials. AIM to characterize the Long Latency Auditory Evoked Potentials (LLAEP) in individuals with HIV/AIDS in comparison to a control group. METHOD the research sample was composed by 21 individuals with HIV/AIDS - research group (14 male and 7 female), with ages ranging from 31 to 48 years, and 21 healthy individuals - control group (5 male and...

Twenty-four participants, consisting of six sibling pairs and six non-sibling pairs, participated in this study investigating the familiality of auditory evoked potentials (AEPs). The auditory brainstem response (ABR) recorded at high stimulus rates, revealed that Wave V latency increases, while amplitude decreases as stimulus rate increases. ABR Wave V latency was also found to increase with c...

We compare the relationship between Arctic Oscillation (AO) and ozone concentration in lower stratosphere over during 1980–1994 (P1) 2007–2019 (P2) January February using reanalysis datasets. The out-of-phase AO is significant P1 P2, but it insignificant P2 P1. variable links are not caused by changes spatial pattern of related to anomalies planetary wave propagation troposphere stratosphere. u...

Note that 40 determines the initial position of the wave, and that, due to the square root in (1.2), the parameter P can only take values in 0<P=< 1. Thus, the solitary waves (1.1) only exist for a finite range of velocities l < c < l . Of course, a positive (respectively negative) velocity corresponds to a wave moving to the right (respectively to the left). When two solitary waves with parame...

This paper describes a new silicon allotrope in the P2/m space group found by first-principles calculations using the Cambridge Serial Total Energy Package (CASTEP) plane-wave code. The examined P2/m-Si belongs to the monoclinic crystal system. P2/m-Si is an indirect band-gap semiconductor with a band gap of 1.51 eV, as determined using the HSE06 hybrid functional. The elastic constants, phonon...

In the f2(1270)−f ′ 2(1525) mixing framework, the isoscalar singlet-octet mixing angle for 1 P2 tensor nonet is determined to the value of 27.5◦ and the decays of the two states are investigated. Comparing the predicted results of the decays of the two states with the available experimental data, we find that the predicted results are in good agreement with the experimental data, which shows th...

Sound overstimulation and exposure to ototoxic drugs damage cochlear hair cells (HCs) and cause their death. The surrounding support cells maintain an epithelial barrier and the appropriate physiological environment for surviving HCs during pathological conditions. Coordination of this homeostatic process requires cellular signalling. However, the signalling events that are activated during dam...