VISION, CENTRALContextual modulation in the V1 real motion cellsSugita, YoichiCAAuthor Information Neuroscience Research Institute, National Institute of Advanced Industrial Science and Technology, and Crest, Japan Science and Technology Agency, Teragu 1497-1, Tsukuba, 300-4201, Japan CACorresponding Author: e-mail: email@example.com Received 4 February 2004; accepted 4 August 2004 NeuroReport: October 5th, 2004 - Volume 15 - Issue 14 - p 2219-2222 Buy SDC Abstract Retinal images move when the eyes move across a stationary object, or alternatively, when the object moves while the eyes are stationary. Orientation selective cells in V1 showed preference for these two types of retinal image slip. Furthermore, if an orientation cell preferred moving objects, the response to an element of a complex image was modulated by background stimuli placed outside the cell's receptive field. However, the response of cells, that showed no preference for a moving object, was hardly affected by the background. These results indicate that figure and ground are already segregated in the very early stage of visual processing. © 2004 Lippincott Williams & Wilkins, Inc.