頭皮上からの導出によるモルモットの視覚誘発電位〔英文〕

概要

論文の詳細を見る
Visual evoked potentials (VEPs) recorded from the scalp in guinea pigs were compared with those from the dura. The study was performed with ten adult male guinea pigs weighing 350-750g. VEPs recorded from the scalp had large negative components (N_<40> and N_<75>) and d large positive component (P_6<55>). The waveform of the VEP in the scalp recording was similar to that in the dural recording in that N_<40> was a major early negative component. Great differences between the scalp and the dural recording were observed in the late negative components (N_6<75> and N_<140>). In the dural recording, the peak N_<75> was a very small component, and the peak N_<140> was very large. There was no significant difference between the peak latencies of the two kinds of VEPs except for the peaks P_<55> and P_<100>. Peak-to-peak amplitudes of VEPs recorded from the scalp were smaller than those from the dura except for P_<55>-N_<75>. The peak-to-peak amplitude in the scalp recording compared to that in the dural recording varied from a ratio as low as 1.0:2.9 to as high as 1.0:36.2, and was markedly variable in each component. The scalp recording correlated with the dural recording as regards the early component.
社団法人日本獣医学会の論文
1991-04-15