Wicher C, Richter F, Haschke W
Institute of Physiology, Friedrich Schiller University Jena, Germany.
Int J Neurosci. 1994 Nov;79(1-2):111-20. doi: 10.3109/00207459408986072.
In experiments of a modified "amplitude trigger" design on rabbits with chronically implanted cortical electrodes we looked for correlations between the partial activation state and EEG, DC-shifts and amplitudes of visual evoked potentials. The activation states are characterized by power spectra of EEG frequencies, actual heart and respiration rates and were in strong correlation with N1 amplitude of VEP as well as polarity and amplitude of stimulus preceding slow potential shifts. Three different activation states could be separated: low vs. "optimum" vs. high activation state. The "optimum" activation state is characterized by large amplitude VEP, positive directed stimulus preceding slow potential shifts as well as a desynchronized preflash EEG.
在对长期植入皮层电极的兔子进行的改良“振幅触发”设计实验中，我们寻找部分激活状态与脑电图（EEG）、直流偏移以及视觉诱发电位（VEP）振幅之间的相关性。激活状态通过EEG频率的功率谱、实际心率和呼吸频率来表征，并且与VEP的N1振幅以及刺激前慢电位偏移的极性和振幅密切相关。可以区分出三种不同的激活状态：低激活状态、“最佳”激活状态和高激活状态。“最佳”激活状态的特征是VEP振幅大、刺激前慢电位偏移为正向以及闪光前EEG去同步化。
