Key Borrowers Detection by Long-Range Interactions

Constraints on long range interactions mediating contour detection

Contour detection may be mediated by lateral interactions between neighboring cortical neurons whose receptive fields have collinear axes of preferred orientation. This hypothesis was tested in psychophysical experiments and computer simulations using a contour detection task in which observers searched for groups of Gabor patches that followed spatially extended contour paths embedded in noise...

Long - lasting , long - range detection

We examined the time course of threshold reduction in the Gabor lateral masking paradigm (Polat and Sagi 1993). Contrast detection thresholds were measured (2AFC) for a brieey presented (36 msec) foveal Gabor signal (GS), preceded by a presentation (90 msec) of two high-contrast GS anked masks, with Stimulus Onset Asynchrony (SOA) varying from 0 to 16,290 msec. Using target-to-mask separations ...

Long - range enhancer - promoter interactions :

Long range community detection

Complex networks can usually be divided in dense subnetworks called communities. In evolving networks, the usual way to detect communities is to find several partitions independently, one for each time step. However, this generally causes troubles when trying to track communities from one time step to the next. We propose here a new method to detect only one decomposition in communities that is...

Robust contour extraction and junction detection by a neural model utilizing recurrent long-range interactions

In the traditional view, early visual processing is basically the extraction of local features by a bank of predefined filters such as Gabor filters. Recent results from physiology and psychophysics however stress the importance of nonlocal, contextual influences and recurrent interactions. We present a model of primary visual cortex V1 for oriented contrast processing utilizing recurrent long-...