Scott T. Grafton

Publications371
h-index96
Citations38,142
Highly Influential Citations2,103
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Wandering Minds: The Default Network and Stimulus-Independent Thought
TLDR
It was demonstrated that mind-wandering is associated with activity in a default network of cortical regions that are active when the brain is “at rest” and individuals' reports of the tendency of their minds to wander were correlated with activity on this network.
Automated image registration: I. General methods and intrasubject, intramodality validation.
TLDR
The registration algorithm described is a robust and flexible tool that can be used to address a variety of image registration problems and can be tailored to meet different needs by optimizing tradeoffs between speed and accuracy.
Dynamic reconfiguration of human brain networks during learning
TLDR
This work investigates the role of modularity in human learning by identifying dynamic changes of modular organization spanning multiple temporal scales and develops a general statistical framework for the identification of modular architectures in evolving systems.
Automated image registration: II. Intersubject validation of linear and nonlinear models.
TLDR
Linear or nonlinear automated intersubject registration based on voxel intensities is computationally practical and produces more accurate alignment of homologous landmarks than manual nine parameter Talairach registration.
Role of the posterior parietal cortex in updating reaching movements to a visual target
TLDR
Transcranial magnetic stimulation was applied over the left PPC during target presentation and disrupted path corrections that normally occur in response to target jumps, but had no effect on those directed at stationary targets.
Forward modeling allows feedback control for fast reaching movements
Functional Mapping of Sequence Learning in Normal Humans
TLDR
Learning-related increases of cerebral blood flow were located in contralateral motor effector areas including motor cortex, supplementary motor area, and putamen, consistent with the hypothesis that nondeclarative motor learning occurs in cerebral areas that control limb movements.
Localization of grasp representations in humans by positron emission tomography
TLDR
It is proposed that the areasactive during grasping observation may form a circuit for recognition of hand-object interactions, whereas the areas active during imagined grasping may be a putative human homologue of a circuitFor hand grasping movements recently defined in nonhuman primates.
Amygdala activity related to enhanced memory for pleasant and aversive stimuli
TLDR
It is shown that bilateral amygdala activity during memory encoding is correlated with enhanced episodic recognition memory for both pleasant and aversive visual stimuli relative to neutral stimuli, and that this relationship is specific to emotional stimuli.
A distributed left hemisphere network active during planning of everyday tool use skills.
TLDR
Findings from two fMRI studies of healthy, right-handed adults in which an event-related design was used to distinguish regions involved in planning and executing tool use gestures with the dominant right and non-dominant left hands are reported.
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