Fang Fang, He Sheng
Department of Psychology, University of Minnesota, 75 East River Road, Minneapolis, Minnesota 55455, USA.
Nat Neurosci. 2005 Oct;8(10):1380-5. doi: 10.1038/nn1537. Epub 2005 Sep 4.
The primate visual system is believed to comprise two main pathways: a ventral pathway for conscious perception and a dorsal pathway that can process visual information and guide action without accompanying conscious knowledge. Evidence for this theory has come primarily from studies of neurological patients and animals. Using fMRI, we show here that even though observers are completely unaware of test object images owing to interocular suppression, their dorsal cortical areas demonstrate substantial activity for different types of visual objects, with stronger responses to images of tools than of human faces. This result also suggests that in binocular rivalry, substantial information in the suppressed eye can escape the interocular suppression and reach dorsal cortex.
一条腹侧通路用于有意识的感知，一条背侧通路可以处理视觉信息并在没有伴随有意识认知的情况下指导行动。这一理论的证据主要来自对神经疾病患者和动物的研究。通过功能磁共振成像，我们在此表明，尽管由于双眼抑制观察者完全没有意识到测试物体图像，但他们的背侧皮质区域对不同类型的视觉物体表现出大量活动，对工具图像的反应比对人脸图像的反应更强。这一结果还表明，在双眼竞争中，被抑制眼的大量信息可以逃过双眼抑制并到达背侧皮质。
