Higher gait variability is associated with decreased parietal gray matter volume among healthy older adults.

abstract：:The aim of this work was to use probabilistic diffusion tractography to examine the organization of the human insular cortex based on the similarities of its remote projections. Forty right-handed healthy subjects (33.8 ± 12.7 years old) with no history of neurological injury were included in the study. After the spat...

journal_title：Brain topography

authors： Jakab A,Molnár PP,Bogner P,Béres M,Berényi EL

更新日期：2012-07-01 00:00:00

abstract：:The EEG acquired simultaneously with fMRI is distorted by a number of artefacts related to the presence of strong magnetic fields, which must be reduced in order to allow for a useful interpretation and quantification of the EEG data. For the two most prominent artefacts, associated with magnetic field gradient switch...

journal_title：Brain topography

authors： Rothlübbers S,Relvas V,Leal A,Murta T,Lemieux L,Figueiredo P

更新日期：2015-03-01 00:00:00

abstract：:This study aimed to finding modality-independent event-related potentials (ERP) modulations related to spatial attention by minimising several possible methodological constrains which may account for the rareness of this finding in past spatial attention ERP research. ERP were recorded while subjects performed a shift...

journal_title：Brain topography

authors： Martin-Loeches M,Barceló F,Rubia FJ

更新日期：1997-10-01 00:00:00

abstract：:In elderly patients presenting to an ambulatory practice with complaints of cognitive disturbance, early dementia must be differentiated from depression. The present paper describes the application of standard electroencephalography and evoked potential testing (EEG/EP) and computerized electroencephalography with evo...

journal_title：Brain topography

authors： Jordan SE,Nowacki R,Nuwer M

更新日期：1989-07-01 00:00:00

abstract：:Accurate source localization of electroencephalographic (EEG) signals requires detailed information about the geometry and physical properties of head tissues. Indeed, these strongly influence the propagation of neural activity from the brain to the sensors. Finite difference methods (FDMs) are head modelling approach...

journal_title：Brain topography

authors： Cuartas Morales E,Acosta-Medina CD,Castellanos-Dominguez G,Mantini D

更新日期：2019-03-01 00:00:00

abstract：:Previous independent EEG and PET studies suggest that administration of intravenous procaine hydrochloride selectively activates limbic brain structures. To further elucidate procaine's effects and explore the relationship between quantitative EEG (qEEG) and regional cerebral blood flow (rCBF), we simultaneously recor...

journal_title：Brain topography

authors： Parekh PI,Spencer JW,George MS,Gill DS,Ketter TA,Andreason P,Herscovitch P,Post RM

更新日期：1995-04-01 00:00:00

abstract：:Action generation relies on a widely distributed network of brain areas. However, little is known about the spatiotemporal dynamics of neuronal activity in the network that gives rise to voluntary action in humans. Here, we used magnetoencephalography (MEG) and source analysis (n = 15, 7 female subjects) to investigat...

journal_title：Brain topography

authors： Carl C,Hipp JF,König P,Engel AK

更新日期：2016-01-01 00:00:00

abstract：:Recently studied 'old' stimuli lead to larger frontal and parietal ERP responses than 'new' stimuli. The present experiment investigated the neuromagnetic correlates (MEG) of this 'old-new' effect and its modulation by emotional stimulus content. Highly arousing pleasant, highly arousing unpleasant and un-arousing neu...

journal_title：Brain topography

authors： Kissler J,Hauswald A

更新日期：2008-06-01 00:00:00

abstract：:It is well known that, following an early visual deprivation, the neural network involved in processing auditory spatial information undergoes a profound reorganization. In particular, several studies have demonstrated an extensive activation of occipital brain areas, usually regarded as essentially "visual", when ear...

journal_title：Brain topography

authors： Collignon O,Davare M,Olivier E,De Volder AG

更新日期：2009-05-01 00:00:00

abstract：:Aging and sensorineural hearing loss are known to be involved in the development of chronic tinnitus. This study explores the structural changes of gray matter using surface base methods and focuses more specifically on changes in cortical thickness in 127 tinnitus patients. The linear relationships between cortical t...

journal_title：Brain topography

authors： Yoo HB,De Ridder D,Vanneste S

更新日期：2016-11-01 00:00:00

abstract：:While several studies have investigated interactions between the electroencephalography (EEG) and functional magnetic resonance imaging BOLD signal fluctuations, less is known about the associations between EEG oscillations and baseline brain haemodynamics, and few studies have examined the link between EEG power outs...

journal_title：Brain topography

authors： O'Gorman RL,Poil SS,Brandeis D,Klaver P,Bollmann S,Ghisleni C,Lüchinger R,Martin E,Shankaranarayanan A,Alsop DC,Michels L

更新日期：2013-07-01 00:00:00

abstract：:Pain perception in the brain can be analyzed by neuroimaging (PET, fMRI) and electrophysiological parameter mapping (EEG, ERP/MEG, MEF). These studies have generally been focused on the localization of cerebral activation. Whether pain can be conceptualized as localized function or best be understood by distributed fu...

journal_title：Brain topography

authors： Chen AC,Rappelsberger P,Filz O

更新日期：1998-01-01 00:00:00

abstract：:Contralateral somatosensory evoked fields (SEF) by whole head MEG after unilateral median and ulnar nerve stimulation of both hands were studied in 10 healthy right-handed subjects. Major parameters describing cortical activity were examined to discriminate median and ulnar nerve evoked responses. Somatic sensitivity ...

journal_title：Brain topography

authors： Theuvenet PJ,van Dijk BW,Peters MJ,van Ree JM,Lopes da Silva FL,Chen AC

更新日期：2006-01-01 00:00:00

abstract：:In the past decade, the possibility of combining recordings of EEG and functional MRI (EEG-fMRI), has brought a new insight into the brain network underlying generalized spike wave discharges (GSWD). Nevertheless, how GSWD duration influences this network is not fully understood. In this study we aim to investigate wh...

journal_title：Brain topography

authors： Pugnaghi M,Carmichael DW,Vaudano AE,Chaudhary UJ,Benuzzi F,Di Bonaventura C,Giallonardo AT,Rodionov R,Walker MC,Duncan JS,Meletti S,Lemieux L

更新日期：2014-01-01 00:00:00

abstract：:A key question in neuroscience is how memory is selectively allocated to neural networks in the brain. This question remains a significant research challenge, in both rodent models and humans alike, because of the inherent difficulty in tracking and deciphering large, highly dimensional neuronal ensembles that support...

journal_title：Brain topography

authors： Bergstrom HC,McDonald CG,Dey S,Fernandez GM,Johnson LR

更新日期：2013-07-01 00:00:00

abstract：:In an earlier experiment, we have used the BTi twin MAGNES system (2 x 37 channels) to record the evoked magnetic field from five healthy right-handed male volunteers using two tasks: visual recognition of complex objects including faces and facial expressions of emotion. We have repeated the experiment with one of th...

journal_title：Brain topography

authors： Liu L,Ioannides AA,Streit M

更新日期：1999-07-01 00:00:00

abstract：:Topographic mapping of brain electrical activity has become a commonly used method in the clinical as well as research laboratory. To enhance analytic power and accuracy, mapping applications often involve statistical paradigms for the detection of abnormality or difference. Because mapping studies involve many measur...

journal_title：Brain topography

authors： Duffy FH,Jones K,Bartels P,Albert M,McAnulty GB,Als H

更新日期：1990-10-01 00:00:00

abstract：:The growing interest in brain networks to study the brain's function in cognition and diseases has produced an increase in methods to extract these networks. Typically, each method yields a different network. Therefore, one may ask what the resulting networks represent. To address this issue we consider electrocortico...

journal_title：Brain topography

authors： Hebbink J,van Blooijs D,Huiskamp G,Leijten FSS,van Gils SA,Meijer HGE

更新日期：2019-05-01 00:00:00

abstract：:Spatial principal components analysis (SPCA) applied to the ongoing EEG yields factor loadings which, when mapped, consistently reveal symmetrical patterns resembling the spherical harmonics. In this paper, we consider the mechanisms responsible for these characteristic patterns. In doing so, we demonstrate that volum...

journal_title：Brain topography

authors： Silberstein RB,Cadusch PJ

更新日期：1992-07-01 00:00:00

abstract：:Magnetoencephalography provides precise information about the temporal dynamics of brain activation and is an ideal tool for investigating rapid cognitive processing. However, in many cognitive paradigms visual stimuli are used, which evoke strong brain responses (typically 40-100 nAm in V1) that may impede the detect...

journal_title：Brain topography

authors： Mills T,Lalancette M,Moses SN,Taylor MJ,Quraan MA

更新日期：2012-07-01 00:00:00

abstract：:Muscle or electromyogenic (EMG) artifact poses a serious risk to inferential validity for any electroencephalography (EEG) investigation in the frequency-domain owing to its high amplitude, broad spectrum, and sensitivity to psychological processes of interest. Even weak EMG is detectable across the scalp in frequenci...

journal_title：Brain topography

authors： Shackman AJ,McMenamin BW,Slagter HA,Maxwell JS,Greischar LL,Davidson RJ

更新日期：2009-06-01 00:00:00

abstract：:In Autism Spectrum Disorders (ASD), impaired response inhibition and lack of adaptation are hypothesized to underlie core ASD symptoms, such as social communication and repetitive, stereotyped behavior. Thus, the aim of the present study was to compare neural correlates of inhibition, post-error adaptation, and reacti...

journal_title：Brain topography

authors： Moliadze V,Brodski-Guerniero A,Schuetz M,Siemann J,Lyzhko E,Schlitt S,Kitzerow J,Langer A,Kaiser J,Naumer MJ,Wibral M,Chan J,Freitag CM,Siniatchkin M

更新日期：2020-05-01 00:00:00

abstract：:In 148 patients with focal cerebral lesions the findings of EEG mapping, routine EEG and CT were compared. Regarding etiology 43 patients suffered from completed stroke (CS), 43 patients from transient ischemic attack (TIA), 33 patients had an intracerebral hemorrhage (ICH) and 29 an hemispheric tumor. In 37 patients ...

journal_title：Brain topography

authors： Logar C,Boswell M

更新日期：1991-07-01 00:00:00

abstract：:Posterior cortical atrophy (PCA), considered a visual variant of Alzheimer's disease, has similar pathological characteristics yet shows a selective visual manifestation with relative preservation of other cortical areas, at least at early stages of disease. Using a gamut of imaging methods, we aim to evaluate the glo...

journal_title：Brain topography

authors： Glick-Shames H,Keadan T,Backner Y,Bick A,Levin N

更新日期：2020-09-01 00:00:00

abstract：:Spontaneous EEG signal can be parsed into sub-second periods of stable functional states (microstates) that assumingly correspond to brief large scale synchronization events. In schizophrenia, a specific class of microstate (class "D") has been found to be shorter than in healthy controls and to be correlated with pos...

journal_title：Brain topography

authors： Diaz Hernandez L,Rieger K,Baenninger A,Brandeis D,Koenig T

更新日期：2016-03-01 00:00:00

abstract：:The evoked gamma-band activity is an event related rhythmic response which persists within the first 100 ms after the stimulus onset. It shows spectral peaks between 30 and 40 Hz in the auditory, between 45 and 55 Hz in the somatosensory and between 100 and 110 Hz in the visual system. After separation of the wide-ban...

journal_title：Brain topography

authors： Pantev C

更新日期：1995-07-01 00:00:00

abstract：:With its millisecond temporal resolution, Magnetoencephalography (MEG) is well suited for real-time monitoring of brain activity. Real-time feedback allows the adaption of the experiment to the subject's reaction and increases time efficiency by shortening acquisition and off-line analysis. Two formidable challenges e...

journal_title：Brain topography

authors： Dinh C,Strohmeier D,Luessi M,Güllmar D,Baumgarten D,Haueisen J,Hämäläinen MS

更新日期：2015-11-01 00:00:00

abstract：:Topographical analysis of cerebral electrical activity was performed in 44 patients with hepatic encephalopathy. These patients were classified in 5 groups according to clinical criteria. Eight healthy subjects were used as a control group. All were studied in an awake, eyes closed, condition and some [Control Group (...

journal_title：Brain topography

authors： Sagalés T,Gimeno V,de la Calzada MD,Casellas F,Dolors Macià M,Villar Soriano M

更新日期：1990-04-01 00:00:00

abstract：:Intracortical microstimulation and single cell recordings in non-human primates showed that both, muscles and movements are represented in primary motor cortex (M1). This was also suggested in humans using electrophysiological and neuroimaging techniques. Transcranial magnetic stimulation (TMS) thus far was used to st...

journal_title：Brain topography

authors： Zartl M,Kapfer T,Muellbacher W

更新日期：2014-03-01 00:00:00

abstract：:A large portion of the visual cortex is organized retinotopically, but perception is usually non-retinotopic. For example, a reflector on the spoke of a bicycle wheel appears to move on a circular or prolate cycloidal orbit as the bicycle moves forward, while in fact it traces out a curtate cycloidal trajectory. The m...

journal_title：Brain topography

authors： Thunell E,Plomp G,Ögmen H,Herzog MH

更新日期：2016-03-01 00:00:00