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The dynamics of proactive and reactive cognitive control processes in the human brain.
(J Cogn Neurosci, 2014-05)
In this study, we leveraged the high temporal resolution of EEG to examine the neural
mechanisms underlying the flexible regulation of cognitive control that unfolds over
different timescales. We measured behavioral and ...
Rapid modulation of sensory processing induced by stimulus conflict.
(J Cogn Neurosci, 2011-09)
Humans are constantly confronted with environmental stimuli that conflict with task
goals and can interfere with successful behavior. Prevailing theories propose the
existence of cognitive control mechanisms that can suppress ...
The role of stimulus salience and attentional capture across the neural hierarchy in a stop-signal task.
(PLoS One, 2011)
Inhibitory motor control is a core function of cognitive control. Evidence from diverse
experimental approaches has linked this function to a mostly right-lateralized network
of cortical and subcortical areas, wherein a ...
Differential developmental trajectories of magnetic susceptibility in human brain gray and white matter over the lifespan.
(Hum Brain Mapp, 2014-06)
As indicated by several recent studies, magnetic susceptibility of the brain is influenced
mainly by myelin in the white matter and by iron deposits in the deep nuclei. Myelination
and iron deposition in the brain evolve ...
Improvement in visual search with practice: mapping learning-related changes in neurocognitive stages of processing.
(J Neurosci, 2015-04-01)
Practice can improve performance on visual search tasks; the neural mechanisms underlying
such improvements, however, are not clear. Response time typically shortens with practice,
but which components of the stimulus-response ...
Cortical Brain Activity Reflecting Attentional Biasing Toward Reward-Predicting Cues Covaries with Economic Decision-Making Performance.
(Cereb Cortex, 2016-01)
Adaptive choice behavior depends critically on identifying and learning from outcome-predicting
cues. We hypothesized that attention may be preferentially directed toward certain
outcome-predicting cues. We studied this ...
The influence of different Stop-signal response time estimation procedures on behavior-behavior and brain-behavior correlations.
(Behav Brain Res, 2012-04-01)
The fundamental cognitive-control function of inhibitory control over motor behavior
has been extensively investigated using the Stop-signal task. The critical behavioral
parameter describing stopping efficacy is the Stop-signal ...
Functional neuroimaging of emotionally intense autobiographical memories in post-traumatic stress disorder.
(J Psychiatr Res, 2011-05)
Post-traumatic stress disorder (PTSD) affects regions that support autobiographical
memory (AM) retrieval, such as the hippocampus, amygdala and ventral medial prefrontal
cortex (PFC). However, it is not well understood ...
Neural correlates of emotional processing in depression: changes with cognitive behavioral therapy and predictors of treatment response.
(J Psychiatr Res, 2011-05)
Major depressive disorder (MDD) is characterized by the presence of disturbances in
emotional processing. However, the neural correlates of these alterations, and how
they may be affected by therapeutic interventions, remain ...
Adult age differences in functional connectivity during executive control.
(Neuroimage, 2010-08-15)
Task switching requires executive control processes that undergo age-related decline.
Previous neuroimaging studies have identified age-related differences in brain activation
associated with global switching effects (dual-task ...