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Functional localization of the system for visuospatial attention using positron emission tomography.
PET was used to image the neural system underlying visuospatial attention. Analysis of data at both the group and individual-subject level provided anatomical resolution superior to that described toExpand
Cytoarchitecture and neural afferents of orbitofrontal cortex in the brain of the monkey
The orbitofrontal cortex of the monkey can be subdivided into a caudal agranular sector, a transitional dysgranular sector, and an anterior granular sector. The neural input into these sectors wasExpand
Hunger selectively modulates corticolimbic activation to food stimuli in humans.
Functional magnetic resonance imaging (fMRI) was used to determine whether visual responses to food in the human amygdala and related corticolimbic structures would be selectively altered by changesExpand
A large-scale distributed network for covert spatial attention: further anatomical delineation based on stringent behavioural and cognitive controls.
Functional MRI was used to examine cerebral activations in 12 subjects while they performed a spatial attention task. This study applied more stringent behavioural and cognitive controls thanExpand
Neural repetition suppression reflects fulfilled perceptual expectations
Stimulus-evoked neural activity is attenuated on stimulus repetition (repetition suppression), a phenomenon that is attributed to largely automatic processes in sensory neurons. By manipulating theExpand
Trajectories of cholinergic pathways within the cerebral hemispheres of the human brain.
All sectors of the human cerebral cortex receive dense cholinergic input. The origin of this projection is located in the Ch4 cell group of the nucleus basalis of Meynert. However, very little isExpand
Orienting Attention to Locations in Perceptual Versus Mental Representations
Extensive clinical and imaging research has characterized the neural networks mediating the adaptive distribution of spatial attention. In everyday behavior, the distribution of attention is guidedExpand
Covert Visual Spatial Orienting and Saccades: Overlapping Neural Systems
We used functional magnetic resonance imaging (fMRI) to investigate the functional anatomical relationship between covert orienting of visual spatial attention and execution of saccadic eyeExpand
Nucleus basalis (Ch4) and cortical cholinergic innervation in the human brain: Observations based on the distribution of acetylcholinesterase and choline acetyltransferase
The nucleus basalis (NB) of the human brain is a large, complex, and highly differentiated structure. Many of its neurons are magnocellular, hyperchromic, isodendritic, acetylcholinesterase‐rich, andExpand
Complete and selective cholinergic denervation of rat neocortex and hippocampus but not amygdala by an immunotoxin against the p75 NGF receptor
The immunotoxin 192 IgG-saporin, produced by coupling the ribosome- inactivating protein saporin to the monoclonal 192 IgG antibody against the low-affinity p75 NGF receptor (NGFr), was injected intoExpand