Esterman Michael, Verstynen Timothy, Robertson Lynn C
Department of Psychology and Neuroscience Institute, University of California, Berkeley, CA, USA.
Neuroimage. 2007 Apr 15;35(3):1247-55. doi: 10.1016/j.neuroimage.2006.10.039. Epub 2007 Mar 1.
A number of neuroimaging and neuropsychology studies have implicated various regions of parietal cortex as playing a critical role in the binding of color and form into conjunctions. The current study investigates the role of two such regions by examining how parietal transcranial magnetic stimulation (TMS) influences binding errors known as 'illusory conjunctions'. Participants made fewer binding errors after 1 Hz rTMS of the right intraparietal sulcus (IPS), while basic perception of features (color and shape) was unaffected. No perceptual effects were found following left IPS stimulation, or stimulation of the right angular gyrus at the junction of the transverse occipital sulcus (IPS/TOS). These results support a role for the parietal cortex in feature binding but in ways that may require rethinking.
多项神经影像学和神经心理学研究表明，顶叶皮层的各个区域在将颜色和形状结合为联合体的过程中起着关键作用。本研究通过考察顶叶经颅磁刺激（TMS）如何影响被称为“错觉性结合”的结合错误，来探究其中两个区域的作用。在对右侧顶内沟（IPS）进行1赫兹重复经颅磁刺激（rTMS）后，参与者的结合错误减少，而特征（颜色和形状）的基本感知未受影响。在刺激左侧IPS或横枕沟（IPS/TOS）交界处的右侧角回后，未发现感知效应。这些结果支持顶叶皮层在特征结合中发挥作用，但方式可能需要重新思考。
