Halliday R, Callaway E
Electroencephalogr Clin Neurophysiol. 1978 Jul;45(1):118-21. doi: 10.1016/0013-4694(78)90350-4.
A simple technique for generating averaged evoked potentials to auditory signals that appear to move in space is described. Shifts in the apparent location of the signal were created by digitally delaying the output of a white noise generator with a minicomputer. The two channels were reconverted to two analog signals and presented binaurally through headphones. Shifts inthe apparent location of the signal produced a time shifted evoked potential (TSEP) that was not present during monaural control runs. TSEP amplitudes were largest near the vertex and varied as a function of the presentation format.
本文描述了一种简单的技术,用于生成对似乎在空间中移动的听觉信号的平均诱发电位。通过用小型计算机对白噪声发生器的输出进行数字延迟,来产生信号视在位置的偏移。这两个通道被重新转换为两个模拟信号,并通过耳机双耳呈现。信号视在位置的偏移产生了一种单耳对照试验中不存在的时间移位诱发电位(TSEP)。TSEP的幅度在头顶附近最大,并随呈现格式而变化。