Pratt H, Har'el Z, Golos E
Int J Biomed Comput. 1986 May;18(3-4):239-48. doi: 10.1016/0020-7101(86)90020-6.
Three-Channel Lissajous' Trajectories (3CLTs) of Auditory Brain Stem Evoked Potentials (ABEP) were obtained from 15 normal humans. Planar-segments of 3CLT were identified and the orientations of the first two geometrical principal components, which interact to produce the planar-segments, were calculated. Each principal component's orientation in voltage space was quantified by its coefficients (A, B and C). Intersubject variability of these orientations was comparable to the variability of plane orientations. The principal components of planar-segments can indicate the type of generator activity that is involved in the formation of planar-segments. The results of this analysis indicate that planarity of each 3CLT component is produced by the interaction of simultaneous multiple generators, or by a single synchronous generator which changes its orientation. The coefficients of these principal components may complement plane coefficients as quantitative indices of 3CLT of ABEP.
从15名正常人中获取了听性脑干诱发电位（ABEP）的三通道李萨如图形轨迹（3CLT）。识别出3CLT的平面段，并计算了相互作用产生平面段的前两个几何主成分的方向。每个主成分在电压空间中的方向通过其系数（A、B和C）进行量化。这些方向的个体间变异性与平面方向的变异性相当。平面段的主成分可以指示参与平面段形成的发生器活动类型。该分析结果表明，每个3CLT成分的平面性是由多个同步发生器的相互作用产生的，或者是由一个改变其方向的单个同步发生器产生的。这些主成分的系数可以作为ABEP的3CLT的定量指标补充平面系数。
