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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 ...
Differentiating sensitivity of post-stimulus undershoot under diffusion weighting: implication of vascular and neuronal hierarchy.
(PLoS One, 2008-08-13)
The widely used blood oxygenation level dependent (BOLD) signal during brain activation,
as measured in typical fMRI methods, is composed of several distinct phases, the last
of which, and perhaps the least understood, is ...
A framework for integrating the songbird brain.
(J Comp Physiol A Neuroethol Sens Neural Behav Physiol, 2002-12)
Biological systems by default involve complex components with complex relationships.
To decipher how biological systems work, we assume that one needs to integrate information
over multiple levels of complexity. The songbird ...
A screw microdrive for adjustable chronic unit recording in monkeys.
(J Neurosci Methods, 1998-06-01)
A screw microdrive is described that attaches to the grid system used for recording
single neurons from brains of awake behaving monkeys. Multiple screwdrives can be
mounted on a grid over a single cranial opening. This ...
For whom the bird sings: context-dependent gene expression.
(Neuron, 1998-10)
Male zebra finches display two song behaviors: directed and undirected singing. The
two differ little in the vocalizations produced but greatly in how song is delivered.
"Directed" song is usually accompanied by a courtship ...
Assessing visual requirements for social context-dependent activation of the songbird song system.
(Proc Biol Sci, 2009-01-22)
Social context has been shown to have a profound influence on brain activation in
a wide range of vertebrate species. Best studied in songbirds, when males sing undirected
song, the level of neural activity and expression ...
Corollary discharge circuits in the primate brain.
(Curr Opin Neurobiol, 2008-12)
Movements are necessary to engage the world, but every movement results in sensorimotor
ambiguity. Self-movements cause changes to sensory inflow as well as changes in the
positions of objects relative to motor effectors ...
Songbirds and the revised avian brain nomenclature.
(Ann N Y Acad Sci, 2004-06)
It has become increasingly clear that the standard nomenclature for many telencephalic
and related brainstem structures of the avian brain is based on flawed once-held assumptions
of homology to mammalian brain structures, ...
Brain evolution by brain pathway duplication.
(Philos Trans R Soc Lond B Biol Sci, 2015-12-19)
Understanding the mechanisms of evolution of brain pathways for complex behaviours
is still in its infancy. Making further advances requires a deeper understanding of
brain homologies, novelties and analogies. It also requires ...
Microcircuits for attention.
(Neuron, 2007-07-05)
Researchers who study the neuronal basis of cognition face a paradox. If they extract
the brain, its cognitive functions cannot be assessed. On the other hand, the brain's
microcircuits are difficult to study in the intact ...