Shinomiya Kayo, Itsuki Nobuyuki, Kubo Masanori, Shiota Hiroshi
Department of Ophthalmology and Visual Neuroscience, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan.
J Med Invest. 2008 Feb;55(1-2):120-6. doi: 10.2152/jmi.55.120.
We placed negative electrodes on the body and positive electrodes at the medial and lateral canthi, measured their potentials separately, evaluated their characteristics, and analyzed cross-talk. We recorded EOG in 6 normal subjects and found the following. The potential at the medial was lower than that at the lateral canthus in the bilateral eyes. The polarity of waves at the lateral was reverse to that at the medial canthus in the bilateral eyes. We recorded EOG in 6 patients with unilateral anophthalmia and found the following. On the anophthalmia side, the potential at the lateral was considerably lower than that at the medial canthus. The polarity of the potential was the same between the medial and lateral canthi. The mean cross-talk to the medial canthus on the anophthalmia side was 8.7%-54.0% of the potential at the medial canthus on the normal side. The mean cross-talk to the lateral canthus on the anophthalmia side was 4.4%-16.9%. The influence of cross-talk of the other eye was marked at the medial but slight at the lateral canthus. In EOG recording, results with minimum errors due to cross-talk can be obtained by paying attention to the potential at the lateral canthus.
我们将负极放置在身体上，正极放置在内眦和外眦处，分别测量它们的电位，评估其特征，并分析串扰。我们对6名正常受试者进行了眼电图（EOG）记录，结果如下。双眼内侧的电位低于外侧眦的电位。双眼外侧的波极性与内侧眦的相反。我们对6名单侧无眼球患者进行了EOG记录，结果如下。在无眼球侧，外侧的电位明显低于内侧眦的电位。内侧和外侧眦之间的电位极性相同。无眼球侧对内眦的平均串扰为正常侧内眦电位的8.7%-54.0%。无眼球侧对外眦的平均串扰为4.4%-16.9%。另一只眼的串扰对内眦的影响明显，对外眦的影响轻微。在EOG记录中，通过关注外侧眦的电位可以获得因串扰导致误差最小的结果。
