Computer Analysis of Electroencephalogram in Clinical Veterinary Medicine.

脑电描记术的临床应用是兽医学中一门成熟的学科，频率分析（频谱分析）和地形图是临床界越来越流行的技术。这两项分析都在40例自发性神经系统疾病患者中进行了前瞻性研究，以了解这些测试是否有助于发现异常。9例癫痫患者中有6例出现频谱异常。功率谱分析使四只脑积水犬的大部分慢波定量化。去极化被认为是增加双极电极导线的功率。在神经系统患者中，频率分析显示总功率显著增加。地形图测试表明弥漫性高密度分布来自癫痫、脑积水、癫痫发作、视觉功能障碍和ananastasia动物。在癫痫、乳腺瘤、癫痫发作和头部倾斜患者中识别出慢频率成分的局部化或不对称。在17只患有神经系统疾病的动物中，有15例的地形分布被判定为异常模式。总的来说，人们认为，脑电图量化频谱分析可能是可能的，可视化地形分析可以准确地预测在低频分量的偏侧或定位。因此，脑电频谱分析和地形图分析可以作为兽医临床脑电评估的有效手段，使脑电的评估变得容易。此后，结合其他解剖学检查，这些测试的价值得到了提高，尽管在解释这些测试时需要相当小心地识别伪影和正常的脑电图变异。

Clinical application of electroencephaolgraphy is a well-developed discipline in veterinary medicine, and frequency analysis (spectral analysis) and topographic mapping are techniques gaining popularity in the clinical community. Both analysis were studied prospectively in 40 patients with spontaneous neurologic disease to see if those tests could help find the abnormality. 6 of 9 patients with epilepsy showed the abnormal spectral patterns compared with normal spectrum. Power spectral analysis made a majority of slow wave to be quantitative in four dogs with hydrocephalus. Desynchronization was recognized as increase of power in bipolar leads. In neurologic patients, significant increase in total power were showed by frequency analysis. Topographic mapping tests suggest diffusal high density distribution from animals with epilepsy, hydrocephalus, seizure, visual dysfunction, and ananastasia. Localizations or asymmetries of slow frequency components were identified were recognized in patients with epilepsy, mastadenoma, seizure, and head tilt. In 15 cases of 17 animals with neurologic disorders, topographic distributions were judged as abnormal patterns. Overall, it was thought that electroencephalography quantitazation by spectral analysis might be possible and visualization by topographic analysis could accurately predict the laterality or localization in low frequency components. So, frequency analysis and topographic mapping were useful technique to evaluate electroencephalography in clinical veterinary medicine, because those analysis made the estimation of electroencephalography easy. Hereafter, valuability of those tests was rised in combination with the other anatomical examinations, though considerable care needs to be taken to identify artifacts and normal electroencephalography variants when interpreting these tests.