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Navigation Labs Laboratory for Basic and Translational Cognitive Neuroscience (Dr. Steve Luck) Laboratory for Brain and Language (Tamara Swaab) Affiliated Labs Laboratory for the Neural Mechanisms of Attention (Dr. Ron Mangun) Publications The Neuroscience of Attention: Attentional Control and Selection Intensive training induces longitudinal changes in meditation state-related EEG oscillatory activity. The spotlight of attention illuminates failed feature-based expectancies. The role of the pulvinar in distractor processing and visual search. Preparatory effects of distractor suppression: evidence from visual cortex. Brain regions activated by endogenous preparatory set shifting as revealed by fMRI. Evaluation of PCA and ICA of simulated ERPs: Promax vs. infomax rotations. Interactions between attention and perceptual grouping in human visual cortex. Pre-target activity in visual cortex predicts behavioral performance on spatial and feature attention tasks. Control networks and hemispheric asymmetries in parietal cortex during attentional orienting in different spatial reference frames. Electrophysiological correlates of lateral interactions in human visual cortex. Conflict monitoring in the human anterior cingulate cortex during selective attention to global and local object features. Neural mechanisms of top-down control during spatial and feature attention. Form-from-motion: MEG evidence for time course and processing sequence. Tracking the influence of reflexive attention on sensory and cognitive processing. Effects of practice on executive control investigated with fMRI. Selective attention to spatial frequency: an ERP and source localization analysis. A role for top-down attentional orienting during interference between global and local aspects of hierarchical stimuli. Enhanced spatial localization of neuronal activation using simultaneous apparent-diffusion-coefficient and blood-oxygenation functional magnetic resonance imaging. Dissociating top-down attentional control from selective perception and action. Perceptual load and visuocortical processing: event-related potentials reveal sensory-level selection. Integrating electrophysiology and neuroimaging of spatial selective attention to simple isolated visual stimuli. Combined expectancies: event-related potentials reveal the early benefits of spatial attention that are obscured by reaction time measures. Integrating electrophysiology and neuroimaging in the study of brain function. Neural sources of focused attention in visual search. Functional Disconnection of Frontal Cortex and Visual Cortex in Attention-Deficit/Hyperactivity Disorder. Anterior intraparietal sulcus is sensitive to bottom-up attention driven by stimulus salience. Interactions between endogenous and exogenous attention during vigilance. Looking Inward: the Mind's Eye Focuses on Mental Representations. A decomposition of electrocortical activity as a function of spatial frequency: a weighted multidimensional scaling analysis. fMRI evidence for both generalized and specialized components of attentional control. Attention: control in the visual cortex. Baseline Shifts do not Predict Attentional Modulation of Target Processing During Feature-Based Visual Attention. Neural sources of focused attention in visual search. Shifting visual attention in space: an electrophysiological analysis using high spatial resolution mapping. On the processing of spatial frequencies as revealed by evoked-potential source modeling. The neural mechanisms of top-down attentional control. Attention and spatial selection: electrophysiological evidence for modulation by perceptual load. Neural mechanisms of global and local processing. A combined PET and ERP study. Successful verbal encoding into episodic memory engages the posterior hippocampus: a parametrically analyzed functional magnetic resonance imaging study. Sustained visual-spatial attention produces costs and benefits in response time and evoked neural activity. ERP and fMRI measures of visual spatial selective attention. Event-related brain potential correlates of two states of conscious awareness in memory. Developmental dyslexia: passive visual stimulation provides no evidence for a magnocellular processing defect. Estimation of interpolation errors in scalp topographic mapping. Spatial distribution of visual attention: perceptual sensitivity and response latency. Brain potentials in developmental dyslexia: differential effects of word frequency in human subjects. Luminance and spatial attention effects on early visual processing. Electrophysiological signs of sustained and transient attention to spatial locations. Neural mechanisms of visual selective attention. ERP and RT signs of a rightward bias for spatial orienting in a split-brain patient. Combined spatial and temporal imaging of brain activity during visual selective attention in humans. Electrophysiological and behavioral "costs" and "benefits" during sustained visual-spatial attention. [Cerebral lateralization in constitutional dyslexia. Electrophysiologic findings] Sequential operation of disconnected cerebral hemispheres in split-brain patients. Attention to adjacent and separate positions in space: an electrophysiological analysis. Modulations of sensory-evoked brain potentials indicate changes in perceptual processing during visual-spatial priming. Visual event-related potentials index focused attention within bilateral stimulus arrays. II. Functional dissociation of P1 and N1 components. Visual event-related potentials index focused attention within bilateral stimulus arrays. I. Evidence for early selection. Allocation of visual attention to spatial locations: tradeoff functions for event-related brain potentials and detection performance. Independent hemispheric attentional systems mediate visual search in split-brain patients. Spatial gradients of visual attention: behavioral and electrophysiological evidence. The spatial allocation of visual attention as indexed by event-related brain potentials. Sensory gating as a physiological mechanism for visual selective attention. The spatial orienting of attention: sensory facilitation or response bias? Mechanisms of early selective attention in auditory and visual modalities. The neural basis of visual selective attention: a commentary on Harter and Aine. "Cross-talk" in electromyograms: contamination of EMGs recorded with bipolar fine-wire electrodes by volume conducted myoelectric activity from distant sources. Electroretinograms reveal no evidence for centrifugal modulation of retinal inputs during selective attention in man. The neural markers of an imminent failure of response inhibition. Enhanced response inhibition during intensive meditation training predicts improvements in self-reported adaptive socioemotional functioning. Individual working memory capacity is uniquely correlated with feature-based attention when combined with spatial attention. Integrating conflict detection and attentional control mechanisms. Signal enhancement and suppression during visual-spatial selective attention. Right temporoparietal junction activation by a salient contextual cue facilitates target discrimination. Intensive meditation training improves perceptual discrimination and sustained attention. Canonical microcircuits for predictive coding. People Lab News 267 Cousteau Place Davis, CA 95618 (530) 297-4651 phone (530) 297-4400 fax Quick links University Library MyUCDavis Search the CMB

Center for Mind and Brain > Labs > Laboratory for the Neural Mechanisms of Attention (Dr. Ron Mangun) > Publications > Sustained visual-spatial attention produces costs and benefits in response time and evoked neural activity. Personal tools Log in G R Mangun and L A Buck (1998) Sustained visual-spatial attention produces costs and benefits in response time and evoked neural activity. Neuropsychologia 36(3):189-200. Abstract This study investigated the simple reaction time (RT) and event-related potential (ERP) correlates of biasing attention towards a location in the visual field. RTs and ERPs were recorded to stimuli flashed randomly and with equal probability tothe left and right visual hemifields in the three blocked, covert attention conditions: (i) attention divided equally to left and right hemifield locations;(ii) attention biased towards the left location; or (iii) attention biased towards the right location. Attention was biased towards left or right by instructions to the subjects, and responses were required to all stimuli. Relative to the divided attention condition, RTs were significantly faster for targets occurring where more attention was allocated (benefits), and slower to targets where less attention was allocated (costs). The early P1 (100-140 msec) component over the lateral occipital scalp regions showed attentional benefits. There were no amplitude modulations of the occipital N1 (125-180 msec) componentwith attention. Between 200 and 500 msec latency, a late positive deflection (LPD) showed both attentional costs and benefits. The behavioral findings show that when sufficiently induced to bias attention, human observers demonstrate RTbenefits as well as costs. The corresponding P1 benefits suggest that the RT benefits of spatial attention may arise as the result of modulations of visual information processing in the extrastriate visual cortex. Note automatic medline import   Link to PubMed entry