Weinberg H, Johnson B, Cohen P, Crisp D, Robertson A
Brain Behavior Laboratory, Simon Fraser University, Burnaby, B.C., Canada.
Brain Topogr. 1989 Fall-Winter;2(1-2):171-80. doi: 10.1007/BF01128854.
This study examined the effect of modality of stimulation on two measures of cerebral function: (a) the scalp distribution of sensory evoked potentials and (b) the cerebral distribution of radiolabelled HMPAO. Steady-state stimulation in the auditory, somatosensory or visual modality was presented to six subjects. Scalp potentials were measured from a distribution of electrodes, and the radiopharmaceutical was injected through an indwelling intravenous catheter midway through the stimulation/recording session. Equivalent dipole sources estimated from the spatial distribution of the scalp potentials were found to be consistent with regions of high HMPAO uptake as imaged by Single Photon Emission Computed Tomography (SPECT).
（a）感觉诱发电位的头皮分布，以及（b）放射性标记的六甲基丙二胺肟（HMPAO）的脑内分布。对6名受试者进行听觉、体感或视觉方式的稳态刺激。从一组电极分布测量头皮电位，并在刺激/记录时段进行到一半时，通过留置静脉导管注射放射性药物。从头皮电位空间分布估计的等效偶极子源，被发现与单光子发射计算机断层扫描（SPECT）成像的高HMPAO摄取区域一致。
