• Publications
  • Influence
Large-scale automated synthesis of human functional neuroimaging data
An automated brain-mapping framework that uses text-mining, meta-analysis and machine-learning techniques to generate a large database of mappings between neural and cognitive states is described and validated.
Cortical and Subcortical Contributions to Stop Signal Response Inhibition: Role of the Subthalamic Nucleus
Results provide convergent data for a role for the subthalamic nucleus in Stop-signal response inhibition and suggest that the speed of Go and Stop processes could relate to the relative activation of different neural pathways.
The Neural Basis of Loss Aversion in Decision-Making Under Risk
Investigation of neural correlates of loss aversion while individuals decided whether to accept or reject gambles that offered a 50/50 chance of gaining or losing money predicted individual differences in behavioral loss aversion.
Inhibition and the right inferior frontal cortex
Advances in human lesion-mapping support the functional localization of such inhibition to right IFC alone, and future research should investigate the generality of this proposed inhibitory function to other task domains, and its interaction within a wider network.
Can cognitive processes be inferred from neuroimaging data?
  • R. Poldrack
  • Medicine, Psychology
    Trends in Cognitive Sciences
  • 1 February 2006
It is argued that cognitive neuroscientists should be circumspect in the use of reverse inference, particularly when selectivity of the region in question cannot be established or is known to be weak.
Functional Specialization for Semantic and Phonological Processing in the Left Inferior Prefrontal Cortex
Functional magnetic resonance imaging results suggest that a distinct region in the left inferior frontal cortex is involved in semantic processing, whereas other regions may subserve phonological processes engaged during both semantic and phonological tasks.
Interactive memory systems in the human brain
Examination of classification learning using event-related FMRI showed rapid modulation of activity in these regions at the beginning of learning, suggesting that subjects relied upon the medial temporal lobe early in learning, but this dependence rapidly declined with training, as predicted by previous computational models of associative learning.
Construction of a 3D probabilistic atlas of human cortical structures
The construction of a digital brain atlas composed of data from manually delineated MRI data, providing a resource for automated probabilistic labeling of external data types registered into standard spaces, and computed average intensity images and tissue density maps based on the three methods and target spaces.
Dissociable Controlled Retrieval and Generalized Selection Mechanisms in Ventrolateral Prefrontal Cortex
Left anterior VLPFC and middle temporal cortex were sensitive to cue-target-associative strength, but not competition, consistent with a control process that retrieves knowledge stored in lateral temporal cortex, and factor analysis revealed evidence for a metafactor that accounted for common behavioral variance across manipulations.
Triangulating a Cognitive Control Network Using Diffusion-Weighted Magnetic Resonance Imaging (MRI) and Functional MRI
DWI tractography shows that the IFC and the STN region are connected via a white matter tract, which could underlie a “hyperdirect” pathway for basal ganglia control and demonstrates a three-way functional–anatomical network in the right hemisphere that could either brake or completely stop responses.