User profiles for Ralph Weidner
Ralph WeidnerForschungszentrum Jülich Verified email at fz-juelich.de Cited by 2256 |
Visual size processing in early visual cortex follows lateral occipital cortex involvement
Neural activation in the early visual cortex (EVC) reflects the perceived rather than retinal
size of stimuli, suggesting that feedback possibly from extrastriate regions modulates retinal …
size of stimuli, suggesting that feedback possibly from extrastriate regions modulates retinal …
Deconstructing the architecture of dorsal and ventral attention systems with dynamic causal modeling
Attentional orientation to a spatial cue and reorientation—after invalid cueing—are mediated
by two distinct networks in the human brain. A bilateral dorsal frontoparietal network, …
by two distinct networks in the human brain. A bilateral dorsal frontoparietal network, …
The neural mechanisms underlying the Müller-Lyer illusion and its interaction with visuospatial judgments
Arrows terminating a line can distort the perceived line length. This so-called Müller-Lyer
illusion can be used in healthy human subjects to mimic the performance of neglect patients in …
illusion can be used in healthy human subjects to mimic the performance of neglect patients in …
Neural mechanisms of attentional reorienting in three-dimensional space
How the human brain reconstructs the three-dimensional (3D) world from two-dimensional (2D)
retinal images has received a great deal of interest as has how we shift attention in 2D …
retinal images has received a great deal of interest as has how we shift attention in 2D …
Neural correlates of visual dimension weighting
In a series of functional magnetic resonance experiments, we have investigated the neural
basis of attentional dimension weighting in crossdimensional singleton search. Previous …
basis of attentional dimension weighting in crossdimensional singleton search. Previous …
Modulation of top-down control of visual attention by cathodal tDCS over right IPS
The right intraparietal sulcus (rIPS) is a key region for the endogenous control of selective
visual attention in the human brain. Previous studies suggest that the rIPS is especially …
visual attention in the human brain. Previous studies suggest that the rIPS is especially …
Separating distractor rejection and target detection in posterior parietal cortex—an event-related fMRI study of visual marking
Successful survival in a competitive world requires the employment of efficient procedures for
selecting new in preference to old information. Recent behavioral studies have shown that …
selecting new in preference to old information. Recent behavioral studies have shown that …
What is “odd” in Posner's location-cueing paradigm? Neural responses to unexpected location and feature changes compared
Within the parietal cortex, the temporo-parietal junction (TPJ) and the intraparietal sulcus (IPS)
seem to be involved in both spatial and nonspatial functions: Both areas are activated …
seem to be involved in both spatial and nonspatial functions: Both areas are activated …
Differential roles of inferior frontal and inferior parietal cortex in task switching: Evidence from stimulus‐categorization switching and response‐modality switching
We used fMRI to investigate both common and differential neural mechanisms underlying
two distinct types of switching requirements, namely switching between stimulus …
two distinct types of switching requirements, namely switching between stimulus …
Statistical learning of frequent distractor locations in visual search involves regional signal suppression in early visual cortex
Observers can learn locations where salient distractors appear frequently to reduce potential
interference—an effect attributed to better suppression of distractors at frequent locations. …
interference—an effect attributed to better suppression of distractors at frequent locations. …