A quantitative model of the functional architecture of human striate cortex with application to visual illusion and cortical texture analysis

1980 ◽  
Vol 37 (2) ◽  
pp. 63-76 ◽  
Author(s):  
Eric L. Schwartz
Author(s):  
Johannes M. Zanker

Some paintings, and other art forms, create vivid sensations of shimmering and movement, despite the fact that they are nothing more than simple static patterns of paint on a static canvas. This is known as a motion illusion. This chapter explores this type of visual illusion and explains why such motion sensations exist in static images. Understanding such phenomena requires the careful definition of stimulus conditions in terms of space and time, consideration of the visuomotor interaction, and the resulting space-time characteristics of the input to cortical processing networks, through modeling of a quantitative model for the neural networks that generate (in this case, illusory) perception


Perception ◽  
1989 ◽  
Vol 18 (3) ◽  
pp. 333-345 ◽  
Author(s):  
Nigel D Haig

A new visual illusion is reported, in which a sine-wave grating appears to tilt when doubly sheared perpendicularly to the grating lines. It is shown that the illusory percept is related to the Münsterberg and Café Wall illusions. The probable mechanism at the root of all such illusions is postulated by reference to the neuroarchitecture of the retina and striate cortex.


2001 ◽  
Vol 7 (S2) ◽  
pp. 578-579
Author(s):  
David W. Knowles ◽  
Sophie A. Lelièvre ◽  
Carlos Ortiz de Solόrzano ◽  
Stephen J. Lockett ◽  
Mina J. Bissell ◽  
...  

The extracellular matrix (ECM) plays a critical role in directing cell behaviour and morphogenesis by regulating gene expression and nuclear organization. Using non-malignant (S1) human mammary epithelial cells (HMECs), it was previously shown that ECM-induced morphogenesis is accompanied by the redistribution of nuclear mitotic apparatus (NuMA) protein from a diffuse pattern in proliferating cells, to a multi-focal pattern as HMECs growth arrested and completed morphogenesis . A process taking 10 to 14 days.To further investigate the link between NuMA distribution and the growth stage of HMECs, we have investigated the distribution of NuMA in non-malignant S1 cells and their malignant, T4, counter-part using a novel model-based image analysis technique. This technique, based on a multi-scale Gaussian blur analysis (Figure 1), quantifies the size of punctate features in an image. Cells were cultured in the presence and absence of a reconstituted basement membrane (rBM) and imaged in 3D using confocal microscopy, for fluorescently labeled monoclonal antibodies to NuMA (fαNuMA) and fluorescently labeled total DNA.


Author(s):  
Jonathan Vaughan ◽  
David A. Rosenbaum ◽  
Cathleen Moore

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