AFNI: software for analysis and visualization of functional magnetic resonance neuroimages
Computers and Biomedical Research
Towards a network theory of cognition
Neural Networks - Special issue on the global brain: imaging and modelling
Multiple Movement Representations in the Human Brain: An Event-Related fMRI Study
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Imaging Cognition II: An Empirical Review of 275 PET and fMRI Studies
Journal of Cognitive Neuroscience
Distributed cortical network for visual attention
Journal of Cognitive Neuroscience
Cortex and memory: Emergence of a new paradigm
Journal of Cognitive Neuroscience
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The anterior cingulate (AC) cortex seems to be similarly engaged by attentional and memory processes. We tested the hypothesis that this common activation is best explained by changes in the regions interacting (functionally connected) with AC. Subjects were tested on two variants of a 2-back working memory task: a standard version with strong attentional demands, and a cued version that more strongly promoted memory retrieval. AC activation, measured with functional MRI, was found in both tasks, although more sustained in the standard condition. The regions functionally connected to the AC, and the relation of these activity patterns to memory performance, were completely different across tasks. In the standard task, the pattern related to a speed–accuracy tradeoff, whereas the connectivity pattern unique to the cued task related only to better accuracy. By virtue of these changing patterns of functional connectivity, the contribution of AC to attention- and memory-driven performance was similarly changed.