Takahashi T, Tsukahara Y
Yaotome Clinic, Sendai, Japan.
Electroencephalogr Clin Neurophysiol. 1998 Jan;106(1):40-3. doi: 10.1016/s0013-4694(97)00074-6.
We studied 21 photosensitive persons aged 9-40 years (mean +/- SD: 20.9 +/- 9.3 years), producing a flickering dot pattern stimulation with a strobo-filter with 22 nits luminance. Five dot patterns (spatial frequencies of 0.5-4.9 c/deg) were used. Using 6 flicker frequencies from 5 to 30 Hz, we gave flickering dot pattern stimuli with each dot pattern, for 5 s each, to subjects with eyes open. Spatial frequency of 2.1-1.5 c/deg, and flicker frequency of 20-15 Hz were most effective in eliciting generalized photoparoxysmal response (PPR). Results indicate that low-luminosity 20-15 Hz flickering 2.1-1.5 c/deg dot pattern stimulation is necessary to increase PPR screening sensitivity.
我们研究了21名年龄在9至40岁之间（平均±标准差：20.9±9.3岁）的光敏者，使用亮度为22尼特的频闪滤光片产生闪烁点图案刺激。使用了五种点图案（空间频率为0.5至4.9周/度）。我们以5至30赫兹的6种闪烁频率，对每种点图案向睁眼的受试者给予闪烁点图案刺激，每次5秒。空间频率为2.1至1.5周/度以及闪烁频率为20至15赫兹时，诱发全身性光阵发性反应（PPR）最为有效。结果表明，低亮度20至15赫兹闪烁的2.1至1.5周/度点图案刺激对于提高PPR筛查敏感性是必要的。
