Scotopic multifocal visual evoked potentials

Scotopic multifocal visual evoked potentials
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暗视多焦点视觉诱发电位

DOI:
10.1016/j.clinph.2018.11.030
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发表时间:
2019
影响因子:
4.7
通讯作者:
Hoffmann MB
Hoffmann MB
中科院分区:
医学3区
文献类型:
--
作者:
Muranyi DS;Kramer FH;Herbik A;Hoffmann MB

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目的探讨暗视多焦视觉诱发电位(mfVEPS)对暗视视野的评价范围。方法对9名正常人的36个圆形棋盘格视野(25°半径)记录明视和暗视条件下的模式反转mfVEP(mfVEPP; 0.003cd/m2)。使用传统的中心固定交叉记录MfVEPP,(i)使用(mfVEPS+)和(ii)不使用(mfVEPS−)额外固定辅助记录mfVEPS。潜伏期的变化进行了测定,使用互相关,mfVEP幅度进行了分析,在偏心依赖的方式使用信噪比(SNR)。ResultsIn相比,mfVEPP,mfVEPS−和mfVEPS+分别延迟101毫秒和97毫秒,并具有较小的信噪比。两种mfVEPS都降低到中心的噪声水平,并且对于所使用的最外围刺激偏心度也严重降低。mfVEPS+和mfVEPS-的旁中心偏心率的视野覆盖率分别为76%和65% [4°-9°],79%和66% [9°-16°]。结论与mfVEPP相比,MfVEPS延迟,并表现出典型的暗视觉的预期中心反应脱落。空间分辨视野测试,其激励在患有影响暗视觉的疾病的患者中进行测试。
ObjectiveTo investigate the scope of scotopic multifocal visual evoked potentials (mfVEPS) for the assessment of scotopic visual fields.MethodsPattern-reversal mfVEP for photopic (mfVEPP) and scotopic conditions (mfVEPS; 0.003 cd/m2) were recorded from 36 visual field locations of a circular checkerboard pattern (25° radius) in 9 participants with normal vision. MfVEPPwere recorded with a conventional central fixation cross, mfVEPSwere recorded (i) with (mfVEPS+) and (ii) without (mfVEPS−) an additional fixation aid. Latency shifts were determined using cross-correlations, mfVEP magnitudes were analysed in an eccentricity dependent manner using signal-to-noise ratios (SNRs).ResultsIn comparison to mfVEPP,mfVEPS−and mfVEPS+were delayed by 101 ms and 97 ms, respectively, and had smaller signal-to-noise-ratios. Both mfVEPSwere reduced down to noise level in the center and also severely reduced for the most peripheral stimulus eccentricity used. The visual-field-coverage for the paracentral eccentricities of mfVEPS+and mfVEPS−was 76% and 65% [4°–9°], respectively, and 79% and 66% [9°–16°].ConclusionsMfVEPSwere delayed compared to mfVEPPand demonstrated the expected central response drop-out typical for scotopic vision.SignificanceMfVEPSmay hold promise of an objective, spatially resolved visual field test which motivates testing it in patients with diseases affecting scotopic vision.
多焦点杆状视网膜电图。
DOI: --
发表时间: 1998
期刊: Investigative ophthalmology & visual science.
影响因子: --
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发表时间: 2006
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影响因子: 1.8
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