Search Results - "Simpson, G. V"

Anticipatory Biasing of Visuospatial Attention Indexed by Retinotopically Specific alpha -Band Electroencephalography Increases over Occipital Cortex by Worden, Michael S, Foxe, John J, Wang, Norman, Simpson, Gregory V

“…Alpha-band (8-14 Hz) oscillatory EEG activity was examined with high-density scalp electrical recording during the cue-stimulus interval of an endogenous…”
Get full text

Spatiotemporal Activity of a Cortical Network for Processing Visual Motion Revealed by MEG and fMRI by Ahlfors, S. P, Simpson, G. V, Dale, A. M, Belliveau, J. W, Liu, A. K, Korvenoja, A, Virtanen, J, Huotilainen, M, Tootell, R.B.H, Aronen, H. J, Ilmoniemi, R. J

“…  1 Dynamic Brain Imaging Laboratory, Departments of Neurology and Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461;   2 Nuclear…”
Get full text

Deficit in a Neural Correlate of Reality Monitoring in Schizophrenia Patients by Vinogradov, Sophia, Luks, Tracy L., Schulman, Brian J., Simpson, Gregory V.

“…Patients who suffer from the devastating psychiatric illness schizophrenia are plagued by hallucinations, bizarre behavior, and delusional ideas, such as…”
Get full text

Phase Locking of Single Neuron Activity to Theta Oscillations during Working Memory in Monkey Extrastriate Visual Cortex by Lee, Han, Simpson, Gregory V., Logothetis, Nikos K., Rainer, Gregor

“…Working memory has been linked to elevated single neuron discharge in monkeys and to oscillatory changes in the human EEG, but the relation between these…”
Get full text

When Top-Down Meets Bottom-Up: Auditory Training Enhances Verbal Memory in Schizophrenia by Adcock, R. A., Dale, C., Fisher, M., Aldebot, S., Genevsky, A., Simpson, G. V., Nagarajan, S., Vinogradov, S.

Get full text

Parieto-occipital similar to 10 Hz activity reflects anticipatory state of visual attention mechanisms by Foxe, J J, Simpson, G V, Ahlfors, S P

“…High-density EEG recordings revealed sensory specific modulation of anticipatory parieto-occipital similar to 10 Hz oscillatory activity when visually…”
Get full text

ERP amplitude and scalp distribution to target and novel events: effects of temporal order in young, middle-aged and older adults by Friedman, D, Simpson, G V

“…Event-related brain potentials (ERPs) were recorded from young (mean age = 24.1), middle-aged (48.7) and older (69.7) adults during a version of the oddball…”
Get more information

Dynamic neuroimaging of brain function by Simpson, G V, Pflieger, M E, Foxe, J J, Ahlfors, S P, Vaughan, Jr, H G, Hrabe, J, Ilmoniemi, R J, Lantos, G

“…To fully characterize the brain processes underlying sensorimotor and cognitive function, the spatial distribution of active regions, their interconnected…”
Get more information

Microcircuitry of posterior cingulate cortex in vitro: electrophysiology and laminar analysis using the current source density method by Hedberg, T G, Simpson, G V, Stanton, P K

“…We used current source density (CSD) analysis of a laminar profile of subicular stimulus-evoked field potentials recorded in cortical slices in vitro to…”
Get more information

Orienting attention within visual fields: how efficient is interhemispheric transfer? by Hardyck, C, Chiarello, C, Dronkers, N F, Simpson, G V

“…Five experiments are reported examining the effect of attentional orienting on lexical decisions within visual half-fields. In Experiment 1, following baseline…”
Get more information

Multiple brain systems generating the rat auditory evoked potential. II. Dissociation of auditory cortex and non-lemniscal generator systems by Simpson, G V, Knight, R T

“…This study addressed the issue of multiple parallel auditory processing systems and their relationship to the skull-recorded auditory evoked potentials (AEPs)…”
Get more information

Multiple brain systems generating the rat auditory evoked potential. I. Characterization of the auditory cortex response by Simpson, G V, Knight, R T

“…The objectives of this study were to characterize the auditory cortex response in the rat and to examine its contributions to the auditory evoked potentials…”
Get more information

Working-memory related theta (4– [formula omitted]) frequency oscillations observed in monkey extrastriate visual cortex by Rainer, Gregor, Lee, Hahn, V. Simpson, Gregory, K. Logothetis, Nikos

“…Working memory has been linked to elevated activity in single neurons in monkeys, as well as to oscillatory phenomena in the human EEG. To understand the…”
Get full text

Parieto-occipital ∼10 Hz activity reflects anticipatory state of visual attention mechanisms by FOXE, J. J, SIMPSON, G. V, AHLFORS, S. P

Get full text

A test of brain electrical source analysis (BESA): a simulation study by Miltner, W, Braun, C, Johnson, Jr, R, Simpson, G V, Ruchkin, D S

“…The present report summarizes the results of a simulation study on the accuracy of Scherg's implementation of spatio-temporal analysis (BESA) for estimating…”
Get more information

Localization of ERP generators and identification of underlying neural processes by Schroeder, C E, Steinschneider, M, Javitt, D C, Tenke, C E, Givre, S J, Mehta, A D, Simpson, G V, Arezzo, J C, Vaughan, Jr, H G

Get more information

Adolescent Smokers Show Decreased Brain Responses to Pleasurable Food Images Compared With Nonsmokers by Rubinstein, Mark L., Luks, Tracy L., Dryden, Wendy Y., Rait, Michelle A., Simpson, Gregory V.

“…Introduction: Nicotine acts on the mesocorticolimbic circuits of the brain leading to the release of dopamine. Repeated elevations of dopamine in the brain may…”
Get full text

Cellular generators of the cortical auditory evoked potential initial component by Steinschneider, M, Tenke, C E, Schroeder, C E, Javitt, D C, Simpson, G V, Arezzo, J C, Vaughan, Jr, H G

“…Cellular generators of the initial cortical auditory evoked potential (AEP) component were determined by analyzing laminar profiles of click-evoked AEPs,…”
Get more information

Altered peripheral and brainstem auditory function in aged rats by Simpson, G V, Knight, R T, Brailowsky, S, Prospero-Garcia, O, Scabini, D

“…A technique for conducting free-field brainstem auditory evoked potential (BAEP) audiometry in unanesthetized, unrestrained rats revealed a non-recruiting 18…”
Get more information

Integration of electrophysiological source analyses, MRI and animal models in the study of visual processing and attention by Simpson, G V, Foxe, J J, Vaughan, Jr, H G, Mehta, A D, Schroeder, C E

Get more information