Zhang Xian, Hood Donald C
Department of Psychology, Columbia University, New York, NY, USA.
J Vis. 2004 Feb 4;4(1):32-43. doi: 10.1167/4.1.4.
Multifocal visual evoked potentials (mfVEP) were recorded with three channels from 31 control subjects. A principal component analysis was applied to all local responses. The first principal component reversed polarity above and below the horizontal meridian in the case of the midline channel and across the vertical meridian in the case of the lateral channel. In addition, the first principal components of the responses around the vertical meridian were reversed in polarity compared to those around the horizontal meridian, consistent with the region near the vertical meridian lying outside the calcarine fissure. A model was proposed that allowed for the construction of a coronal section of V1 based on the distribution of the first principal component. This approach provides a means of deriving a V1 component from mfVEP recordings with only three recording channels.
从31名对照受试者身上通过三个通道记录多焦视觉诱发电位（mfVEP）。对所有局部反应进行主成分分析。对于中线通道，第一主成分在水平子午线上下极性反转；对于外侧通道，第一主成分在垂直子午线两侧极性反转。此外，与水平子午线周围的反应相比，垂直子午线周围反应的第一主成分极性反转，这与垂直子午线附近区域位于距状裂之外一致。提出了一个模型，该模型基于第一主成分的分布构建V1的冠状切面。这种方法提供了一种仅通过三个记录通道从mfVEP记录中推导V1成分的方法。
