A neural model of figure-ground organization

被引:189
作者
Craft, Edward
Schuetze, Hartmut
Niebur, Ernst
von der Heydt, Ruediger
机构
[1] Johns Hopkins Univ, Zanvyl Krieger Mind Brain Inst, Baltimore, MD 21218 USA
[2] Johns Hopkins Univ, Dept Biophys, Baltimore, MD USA
[3] Johns Hopkins Univ, Dept Neurosci, Baltimore, MD USA
关键词
D O I
10.1152/jn.00203.2007
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Psychophysical studies suggest that figure-ground organization is a largely autonomous process that guides-and thus precedes-allocation of attention and object recognition. The discovery of border-ownership representation in single neurons of early visual cortex has confirmed this view. Recent theoretical studies have demonstrated that border-ownership assignment can be modeled as a process of self-organization by lateral interactions within V2 cortex. However, the mechanism proposed relies on propagation of signals through horizontal fibers, which would result in increasing delays of the border-ownership signal with increasing size of the visual stimulus, in contradiction with experimental findings. It also remains unclear how the resulting border-ownership representation would interact with attention mechanisms to guide further processing. Here we present a model of border- ownership coding based on dedicated neural circuits for contour grouping that produce border-ownership assignment and also provide handles for mechanisms of selective attention. The results are consistent with neurophysiological and psychophysical findings. The model makes predictions about the hypothetical grouping circuits and the role of feedback between cortical areas.
引用
收藏
页码:4310 / 4326
页数:17
相关论文
共 79 条
[1]   Reaching beyond the classical receptive field of VI neurons: horizontal or feedback axons? [J].
Angelucci, A ;
Bullier, J .
JOURNAL OF PHYSIOLOGY-PARIS, 2003, 97 (2-3) :141-154
[2]  
Angelucci A, 2002, J NEUROSCI, V22, P8633
[3]   THE TEMPORAL DYNAMICS OF BRIGHTNESS FILLING-IN [J].
ARRINGTON, KF .
VISION RESEARCH, 1994, 34 (24) :3371-3387
[4]   Inferring figure-ground using, a recurrent integrate-and-fire neural circuit [J].
Baek, K ;
Sajda, P .
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 2005, 13 (02) :125-130
[5]  
BAIR W, 1994, J NEUROSCI, V14, P2870
[6]   Shape-coding in IT cells generalizes over contrast and mirror reversal, but not figure-ground reversal [J].
Baylis, GC ;
Driver, J .
NATURE NEUROSCIENCE, 2001, 4 (09) :937-942
[7]  
Blum H., 1967, Models for the Perception of Speech and Visual Forms, P362, DOI DOI 10.1142/S0218654308001154
[8]  
Bregman A. S., 1981, PERCEPTUAL ORG
[9]   Underlying principles of visual shape selectivity in posterior inferotemporal cortex [J].
Brincat, SL ;
Connor, CE .
NATURE NEUROSCIENCE, 2004, 7 (08) :880-886
[10]   Horizontal propagation of visual activity in the synaptic integration field of area 17 neurons [J].
Bringuier, V ;
Chavane, F ;
Glaeser, L ;
Frégnac, Y .
SCIENCE, 1999, 283 (5402) :695-699