Tyler C W, Apkarian P, Nakayama K
Exp Brain Res. 1978 Nov 15;33(3-4):535-50. doi: 10.1007/BF00235573.
Human occipital potentials evoked by stimulation with a counterphase flickering grating were recorded by a digital narrowband filter technique. The data showed a surprising degree of narrow tuning to particular spatial frequencies in addition to the expected narrow temporal frequency tuning. At each temporal frequency, there could be two or more peaks of different spatial frequencies, each distinct from the whole field flicker response. Variations in this multiple spatial frequency tuning were investigated as a function of luminance, electrode location, and temporal frequency for several observers. The results are interpreted in terms of many stimulus-specific resonant neural circuits within the brain, and suggest that it is possible to make a highly detailed exploration of the responses of neural circuits to visual stimulation.
采用数字窄带滤波技术记录了用反相闪烁光栅刺激诱发的人类枕叶电位。数据显示，除了预期的窄时间频率调谐外，对特定空间频率的窄调谐程度令人惊讶。在每个时间频率下，可能有两个或更多不同空间频率的峰值，每个峰值都与全视野闪烁反应不同。针对几位观察者，研究了这种多空间频率调谐随亮度、电极位置和时间频率的变化。结果根据大脑内许多特定刺激的共振神经回路进行了解释，并表明有可能对神经回路对视觉刺激的反应进行高度详细的探索。
