Thevisual system can use a rich variety of contours to segment visual scenes into distinct
perceptually coherent regions. However, successfully segmenting an image is a …

Natural scenes contain a rich variety of contours that the visual system extracts to segregate
the retinal image into perceptually coherent regions. Covert spatial attention helps extract …

Previously we have shown that transient attention—the more automatic, stimulus-driven
component of spatial attention—enhances spatial resolution. Specifically, transient attention …

Both exogenous and endogenous covert spatial attention enhance contrast sensitivity, a
fundamental measure of visual function that depends substantially on the spatial frequency …

It has been shown that early visual areas are involved in contour processing. However, it is
not clear how local and global context interact to influence responses in those areas, nor …

To explore the role of primary visual cortex in contour integration, we measured the
contextual sensitivity of human contrast thresholds and of superficial layer complex cells in …

Dakin and Baruch (2009) investigated how context influences contour integration,
specifically reporting that near-perpendicular surrounding-elements reduced the exposure …

Much research over the last decade has examined how the brain links local activity within
primary visual cortex to signal the presence of extended global structure. Here we bring …

Endogenous and exogenous visuospatial attention both alter spatial resolution, but they
operate via distinct mechanisms. In texture segmentation tasks, exogenous attention …

In contrast to the abundant literature investigating how orientation coding depends on edges
defined by various image features, relatively little is known about how coding of orientation …