Differential inhibition of chromatic and achromatic perception by transcranial magnetic stimulation of the human visual cortex.
Differential inhibition of chromatic and achromatic perception by transcranial magnetic stimulation of the human visual cortex.
复制标题
通过人类视觉皮层的经颅磁刺激对彩色和非彩色感知的差异抑制。
作者：
W. Paulus;Stefan Korinth;S. Wischer;F. Tergau
大细胞视觉通路致力于低对比度、消色差和运动感知，而小细胞视觉通路则处理彩色和高分辨率空间视觉。为了具体分离由这些通路介导的感知，我们使用了低对比度高斯滤波的黑白或彩色视觉刺激。通过使用经颅磁刺激（TMS）在视觉皮层的抑制大细胞刺激实现了明显提前约40 ms相比，小细胞信息。所有刺激的非特异性抑制可以在75-90 ms时达到峰值，对于大细胞刺激显著更高。大细胞刺激对TMS的特殊脆弱性与该通路的不同生理特性相关，例如更快的传导速度和非线性刺激编码。
The magnocellular visual pathway is devoted to low-contrast achromatic and motion perception whereas the parvocellular pathway deals with chromatic and high resolution spatial vision. To specifically separate perception mediated by these pathways we have used low-contrast Gaussian filtered black-white or coloured visual stimuli. By use of transcranial magnetic stimulation (TMS) over the visual cortex inhibition of magnocellular stimuli was achieved distinctly earlier by about 40 ms compared with parvocellular information. A nonspecific inhibition of all stimuli could be seen peaking at 75-90 ms, significantly higher for magnocellular stimuli. The particular vulnerability of magnocellular stimuli to TMS is correlated with distinct physiological properties of this pathway such as faster conduction velocity and non-linear stimulus encoding.
影响因子：
56.9
作者：
BELLIVEAU, JW;KENNEDY, DN;ROSEN, BR
通讯作者：
ROSEN, BR
影响因子：
5.5
作者：
KAPLAN, E;SHAPLEY, RM
通讯作者：
SHAPLEY, RM