News
- [2010-04-14]New article on attention and cognitive control networks
- [2010-03-16]NCoE-meeting in St. PetersburgThere will be a NCoE-meeting in St. Petersburg the 2nd to 3rd of June.
- [2010-02-24]New study published on learning and forgetting in MCI and AD
- [2010-02-19]New study published on bilingual advantage in cognitive control
- [2010-02-18]PhD position in Cognitive Neuroscience at Karolinska Institutet
- [2010-02-09]Course in experimental design
- [2010-01-15]Relaxation course in LinköpingCourses in MR-relaxation will be held during the spring in Linköping. The last day of registration is the 20:th of January.
- [2009-10-22]Dissertation November 13"Train your Brain"
- [2009-05-13]Expert Consensus on Brain Health
- [2009-04-03]New publication"Striatal dopamine D2 binding is related to frontal BOLD response during updating of long-term memory representations" published in NeuroImage
- [2009-01-19]NCoE in SJPSpecial Section devoted to "Cognitive Control"
- [2008-11-24]NCoE Cognitive Control a success story
Perception/neurocomputation node
The Modeling and Perception node investigates basic visual processes in man: From perception of shape, color, and motion to high level visual object recognition, attention and imagery. This is done using a combination of techniques, including methods from psychophysics and experimental psychology, mathematical modeling and computer simulations, and functional brain imaging.
The Theory of Visual Attention (TVA) developed by Claus Bundesen and colleagues in the Center for Visual Cognition is at the core of most of our research projects. TVA now explains how aspects of visual behavior and visual neurophysiology at the cellular level are linked, and it provides several specific measures of cognitive control of visual processes. For example, TVA gives us precise quantitative estimates of efficiency of selection of target objects among distracters and how localized brain damage interferes with visual selection. It also provides measures of the visual short term memory capacity and speed of visual processing of different kinds of objects.
Visual short term memory is limited in terms of number of items (ususally 3-4) that can be retained, and with respect to how they may be transformed with respect to shape, say, visualizing how the letter "n" looks if (mentally) rotated 180 degrees, or transformed with respect to size or location. The interaction between visual attention, which control entry into short-term memory, visual transformations of encoded items, and our limited short-term memory capacity is investigated by mathematical modeling of data obtained from psychophysical experiments.