Significance of Beta-Band Oscillations in Autism Spectrum Disorders During Motor Response Inhibition Tasks: A MEG Study.

abstract：:The functional organization of cortical speech processing is thought to be hierarchical, increasing in complexity and proceeding from primary sensory areas centrifugally. The current study used the mismatch negativity (MMN) obtained with electrophysiology (EEG) to investigate the early latency period of visual speech ...

journal_title：Brain topography

authors： Ponton CW,Bernstein LE,Auer ET Jr

更新日期：2009-05-01 00:00:00

abstract：:Median nerve somatosensory evoked potentials were recorded from exposed cerebral cortex during craniotomies. This technique is valuable when knowledge of the motor cortex location can influence surgical decisions about resection limits or biopsy sites. Two different recording techniques were compared: strips of electr...

journal_title：Brain topography

authors： Nuwer MR,Banoczi WR,Cloughesy TF,Hoch DB,Peacock W,Levesque MF,Black KL,Martin NA,Becker DP

更新日期：1992-10-01 00:00:00

abstract：:A substantial body of research suggests that the cognitive mechanisms for picture and word processes are functionally and anatomically distinct. In spite of significant advancements in the understanding of pictures and words, the electrophysiological activities mediating these processes are not well known. To address ...

journal_title：Brain topography

authors： Azizian A,Watson TD,Parvaz MA,Squires NK

更新日期：2006-04-01 00:00:00

abstract：:The attentional blink (AB) is a transient attentional deficit that occurs when two stimuli that must both be detected are presented within an interval of less than 500 ms. Event-related potential (ERP) investigations have suggested that the AB affects a specific component, the P3, which is suppressed when targets are ...

journal_title：Brain topography

authors： Darque A,Del Zotto M,Khateb A,Pegna AJ

更新日期：2012-04-01 00:00:00

abstract：:Evoked potentials are difficult to analyze because multiple sources are active simultaneously. Principal component analysis and dipole localization are two techniques that have been used to disentangle overlapping sources. Both of these techniques have problems. Principal component analysis suffers from a rotation amb...

journal_title：Brain topography

authors： Klein SA,Carney T

更新日期：1995-01-01 00:00:00

abstract：:Temporal structure is ubiquitous in sensory signals, and the brain has been shown to robustly represent information about temporal structure in the phase of low frequency neural oscillations. In a related construct, the integration of information across the different senses has been proposed to be at least partly due ...

journal_title：Brain topography

authors： Simon DM,Wallace MT

更新日期：2017-09-01 00:00:00

abstract：:Ten right-handed students were submitted to a protocol of cognitive visual stimulations based on six successive sequences: EC1, EO, B1, B2, B3, EC2. Following a first "eyes closed" (EC1) multiple EEG recording (16 EEG leads, plus polygraphy), and an "eyes-open" recording (EO) with central visual fixation, 60 computer-...

journal_title：Brain topography

authors： Etévenon P,Eustache F,Mitermite F,Lepaisant J,Lechevalier B,Zarifian E

更新日期：1990-10-01 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：:Event-related potentials (ERPs) during a visual oddball paradigm with button-pressing responses were recorded in 12 right-handed subjects from 32 scalp electrodes. The single equivalent current dipole (ECD) of the target C1 (weak occipito-parietal negativity from 30-80 ms) was consistently located at the primary visua...

journal_title：Brain topography

authors： Yamazaki T,Kamijo K,Kenmochi A,Fukuzumi S,Kiyuna T,Takaki Y,Kuroiwa Y

更新日期：2000-04-01 00:00:00

abstract：:This paper describes a set of proposed standardized quantitative descriptors of event-related potentials, based upon principal component varimax analysis (PCVA). No claim is made that these mathematical descriptors correspond to discrete neurophysiological processes which generate the ERP. However, adoption and prospe...

journal_title：Brain topography

authors： John ER,Easton P,Prichep LS,Friedman J

更新日期：1993-01-01 00:00:00

abstract：:Although auditory information is processed in several subcortical nuclei, most fMRI studies focus solely on the auditory cortex and do not take brainstem responses into account. One common difficulty in obtaining clear functional brainstem recordings is due to heartbeat related motion, manifested in the rostro-caudal ...

journal_title：Brain topography

authors： Slabu LM

更新日期：2010-09-01 00:00:00

abstract：:Early, middle and late latency somatosensory evoked potentials (SEPs) elicited by cutaneous electrical stimulation (painful vs. non-painful) of right and left hands were recorded. The aims were to study (1) if lifelong use of dominant right hand would result in different SEP topographies compared to non-dominant left ...

journal_title：Brain topography

authors： Niddam DM,Arendt-Nielsen L,Chen AC

更新日期：2000-01-01 00:00:00

abstract：:In this mapping study of the entire scalp area, the responses to flash (FL) and pattern reversal (PR) stimuli were studied in 34 normal subjects. The N70, P100, N135 and P180 were similar from both stimuli but with some differences in amplitude and latency, especially the variability of the latency of P100 from FL. A ...

journal_title：Brain topography

authors： Hughes JR,Kuruvilla A,Fino JJ

更新日期：1992-04-01 00:00:00

abstract：:Mismatch negativity (MMN) and P300 to auditory stimuli was carried out using global field power (GFP) in 25 schizophrenics and 25 normal controls. The peak latencies of MMN and P300 were significantly longer in schizophrenics than in normal controls, and the differences in MMN were marked in the frontal regions. The p...

journal_title：Brain topography

authors： Shutara Y,Koga Y,Fujita K,Takeuchi H,Mochida M,Takemasa K

更新日期：1996-04-01 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：:The accuracy and precision of topographic maps depicting scalp potentials and scalp potentials squared have been examined. Electrode placement was that specified by the International 10-20 System and the methods of interpolation bilinear and bicubic spines. The results indicate that, for these interpolation methods, t...

journal_title：Brain topography

authors： Koles ZJ,Paranjape RB

更新日期：1988-01-01 00:00:00

abstract：:Over the last 20 years, a body of techniques known as high resolution EEG has allowed precise estimation of cortical activity from non-invasive EEG measurements. The availability of cortical waveforms from non-invasive EEG recordings allows to have not only the level of activation within a single region of interest (R...

journal_title：Brain topography

authors： De Vico Fallani F,Astolfi L,Cincotti F,Mattia D,Tocci A,Marciani MG,Colosimo A,Salinari S,Gao S,Cichocki A,Babiloni F

更新日期：2007-04-01 00:00:00

abstract：:Neural activity within the human brain produces electrical potentials that are transmitted through the various tissues of the head to the scalp. A three-dimensional finite difference model has been applied to simulate this process and used as the basis for an inverse model, wherein known potentials on the scalp are us...

journal_title：Brain topography

authors： Teubner MD,Nixon JB,Rasser PE,Bottema MJ,Clark CR

更新日期：2005-07-01 00:00:00

abstract：:The high temporal resolution of EEG/MEG data offers a way to improve source reconstruction estimates which provide insight into the spatio-temporal involvement of neuronal sources in the human brain. In this work, we investigated the performance of spatio-temporal regularization (STR) in a current density approach usi...

journal_title：Brain topography

authors： Dannhauer M,Lämmel E,Wolters CH,Knösche TR

更新日期：2013-04-01 00:00:00

abstract：:Effortful control (EC), considered as one component of temperament, describes an individual's capacity for self-regulation. Previous neuroimaging studies have provided convergent evidence that individual differences in EC are determined by the functioning of neural systems subserving executive attention, primarily com...

journal_title：Brain topography

authors： Wei L,Guo N,Baeken C,Bi M,Wang X,Qiu J,Wu GR

更新日期：2019-01-01 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：:The term "magnetic source image" (MSI) describes the distribution of neuronal activity in the brain that can be deduced from measurements of the field pattern it produces across the scalp. The signals which provide the basis for an MSI are obtained from the magnetoencephalogram (MEG) which is conventionally recorded w...

journal_title：Brain topography

authors： Williamson SJ,Lü ZL,Karron D,Kaufman L

更新日期：1991-01-01 00:00:00

abstract：:The ability to effectively combine sensory inputs across modalities is vital for acquiring a unified percept of events. For example, watching a hammer hit a nail while simultaneously identifying the sound as originating from the event requires the ability to identify spatio-temporal congruencies and statistical regula...

journal_title：Brain topography

authors： Altieri N,Stevenson RA,Wallace MT,Wenger MJ

更新日期：2015-05-01 00:00:00

abstract：:We studied the magnetic field maps generated by six dipoles in the temporal region of a plastic skull filled with conducting gel. The data were processed with two mathematical models. One, using Biot-Savart's law, considered only the magnetic field generated by a localized current dipole, and the other considered a di...

journal_title：Brain topography

authors： Rose DF,Ducla-Soares E,Sato S

更新日期：1989-04-01 00:00:00

abstract：:It would be of the utmost interest to map correlated sources in the working human brain by Event-Related Potentials (ERPs). This work is to develop a new method to map correlated neural sources based on the time courses of the scalp ERPs waveforms. The ERP data are classified first by k-means cluster analysis, and the...

journal_title：Brain topography

authors： Li L,Yao D

更新日期：2007-07-01 00:00:00

abstract：:Motor dysfunction and recovery following stroke and rehabilitation are associated with primary motor cortex plasticity. To better track these effects we studied two patients with sub-acute sub-cortical stroke causing hemiparesis, who underwent an effective behavioral treatment termed Constraint Induced Movement Therap...

journal_title：Brain topography

authors： Stark A,Meiner Z,Lefkovitz R,Levin N

更新日期：2012-04-01 00:00:00

abstract：:Post-stroke aphasia (PSA), which refers to the loss or impairment of language, is typically caused by left hemisphere lesions. Previous neuroimaging studies have indicated that the pathology of PSA may be related to abnormalities in functional integration. In this study, we used resting-state functional magnetic reson...

journal_title：Brain topography

authors： Guo J,Yang M,Biswal BB,Yang P,Liao W,Chen H

更新日期：2019-03-01 00:00:00

abstract：:Multiresolution analysis is a potentially useful tool to enhance the brain's electrical fields (spatial distributions of event-related potentials (ERP)), and to bring out spatial features which may not be seen in the fields before enhancement. For comparing different images (slices from ERP of different subjects or fr...

journal_title：Brain topography

authors： Wang K,Begleiter H,Porjesz B

更新日期：1998-04-01 00:00:00

abstract：:The neural correlate of anterograde amnesia in Wernicke-Korsakoff syndrome (WKS) is still debated. While the capacity to learn new information has been associated with integrity of the medial temporal lobe (MTL), previous studies indicated that the WKS is associated with diencephalic lesions, mainly in the mammillary ...

journal_title：Brain topography

authors： Nahum L,Pignat JM,Bouzerda-Wahlen A,Gabriel D,Liverani MC,Lazeyras F,Ptak R,Richiardi J,Haller S,Thorens G,Zullino DF,Guggisberg AG,Schnider A

更新日期：2015-09-01 00:00:00

abstract：:In our previous model, we ascertained that the large amplitude waves (LAWs), reported by Barkley and coworkers (1990) in time series magnetoencephalography (MEG) recordings from migraine patients, could be simulated and compared with the recorded signals using a simple plane volume conductor model (Tepley and Wijesing...

journal_title：Brain topography

authors： Wijesinghe RS,Tepley N

更新日期：1997-04-01 00:00:00