Olson C R, Gettner S N
Department of Oral and Craniofacial Biological Sciences, College of Dental Surgery, University of Maryland, Baltimore 21201, USA.
Science. 1995 Aug 18;269(5226):985-8. doi: 10.1126/science.7638625.
Object-centered spatial awareness--awareness of the location, relative to an object, of its parts--plays an important role in many aspects of perception, imagination, and action. One possible basis for this capability is the existence in the brain of neurons with sensory receptive fields or motor action fields that are defined relative to an object-centered frame. In experiments described here, neuronal activity was monitored in the supplementary eye field of macaque monkeys making eye movements to the right or left end of a horizontal bar. Neurons were found to fire differentially as a function of the end of the bar to which an eye movement was made. This is direct evidence for the existence of neurons sensitive to the object-centered direction of movements.
以物体为中心的空间意识——即对物体各部分相对于该物体的位置的意识——在感知、想象和行动的许多方面都发挥着重要作用。这种能力的一个可能基础是大脑中存在着神经元，这些神经元具有相对于以物体为中心的框架定义的感觉感受野或运动动作野。在本文所述的实验中，对猕猴的辅助眼区进行了神经元活动监测，这些猕猴向水平杆的右端或左端进行眼球运动。结果发现，神经元的放电会根据眼球运动所指向的杆端而有所不同。这是存在对以物体为中心的运动方向敏感的神经元的直接证据。
