Measurement processes and spatial principal components analysis.

abstract：:The acoustic envelope of human speech correlates with the syllabic rate (4-8 Hz) and carries important information for intelligibility, which is typically compromised in multi-talker, noisy environments. In order to better understand the dynamics of selective auditory attention to low frequency modulated sound sources...

journal_title：Brain topography

authors： Jaeger M,Bleichner MG,Bauer AR,Mirkovic B,Debener S

更新日期：2018-09-01 00:00:00

abstract：:The golden standard of treating Small Cell Lung Cancer (SCLC) entails application of platinum-based chemotherapy, is often accompanied by Prophylactic Cranial Irradiation (PCI), which have been linked to neurotoxic side-effects in cognitive functions. The related existing neuroimaging research mainly focuses on the ef...

journal_title：Brain topography

authors： Mentzelopoulos A,Gkiatis K,Karanasiou I,Karavasilis E,Papathanasiou M,Efstathopoulos E,Kelekis N,Kouloulias V,Matsopoulos GK

更新日期：2021-01-05 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：:High frequency oscillations (HFOs) are emerging as biomarkers of epileptogenicity. They have been shown to originate from small brain regions. Surprisingly, spontaneous HFOs can be recorded from the scalp. To understand how is it possible to observe these small events on the scalp, one avenue is the analysis of the co...

journal_title：Brain topography

authors： Zelmann R,Lina JM,Schulze-Bonhage A,Gotman J,Jacobs J

更新日期：2014-09-01 00:00:00

abstract：:The topography of the visual evoked magnetic response (VEMR) to pattern reversal stimulation was studied in four normal subjects using a single channel BTI magnetometer. VEMRs were recorded from 20 locations over the occipital scalp and the topographic distribution of the most consistent component (P100M) studied. A s...

journal_title：Brain topography

authors： Harding GF,Janday B,Armstrong RA

更新日期：1991-10-01 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：:The subcortical connectivity underlying verbal perseveration (VP) remains poorly understood. We have previously reported that intraoperative electrical stimulation of the caudate nucleus during awake surgery resulted in VP. Here, our purpose is to study the white matter pathway underlying VP using subcortical stimulat...

journal_title：Brain topography

authors： Khan OH,Herbet G,Moritz-Gasser S,Duffau H

更新日期：2014-05-01 00:00:00

abstract：:Multimodal human brain mapping has been proposed as an integrated approach capable of improving the recognition of the cortical correlates of specific neurological functions. We used simultaneous EEG-fMRI (functional magnetic resonance imaging) and EEG-TD-fNIRS (time domain functional near-infrared spectroscopy) recor...

journal_title：Brain topography

authors： Visani E,Canafoglia L,Gilioli I,Sebastiano DR,Contarino VE,Duran D,Panzica F,Cubeddu R,Contini D,Zucchelli L,Spinelli L,Caffini M,Molteni E,Bianchi AM,Cerutti S,Franceschetti S,Torricelli A

更新日期：2015-11-01 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：:We process information from the world through multiple senses, and the brain must decide what information belongs together and what information should be segregated. One challenge in studying such multisensory integration is how to quantify the multisensory interactions, a challenge that is amplified by the host of me...

journal_title：Brain topography

authors： Stevenson RA,Ghose D,Fister JK,Sarko DK,Altieri NA,Nidiffer AR,Kurela LR,Siemann JK,James TW,Wallace MT

更新日期：2014-11-01 00:00:00

abstract：:Many meditation exercises aim at increased awareness of ongoing experiences through sustained attention and at detachment, i.e., non-engaging observation of these ongoing experiences by the intent not to analyze, judge or expect anything. Long-term meditation practice is believed to generalize the ability of increased...

journal_title：Brain topography

authors： Tei S,Faber PL,Lehmann D,Tsujiuchi T,Kumano H,Pascual-Marqui RD,Gianotti LR,Kochi K

更新日期：2009-11-01 00:00:00

abstract：:Event-Related Desynchronization (ERD) and Synchronization (ERS) were studied in 20 normal subjects during a Sternberg-type auditory memory-scanning paradigm. Half of the subjects performed the experiment with vowels and the other half with tones as stimuli. The stimuli consisted of 100 msec long synthesized vowels and...

journal_title：Brain topography

authors： Krause CM,Lang H,Laine M,Kuusisto M,Pörn B

更新日期：1995-10-01 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：:The combination of transcranial magnetic stimulation (TMS) and electroencephalography (EEG) is commonly applied for studying the effective connectivity of neuronal circuits. The stimulation excites neurons, and the resulting TMS-evoked potentials (TEPs) are recorded with EEG. A serious obstacle in this method is the g...

journal_title：Brain topography

authors： Salo KS,Mutanen TP,Vaalto SMI,Ilmoniemi RJ

更新日期：2020-01-01 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：: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：:Tourette syndrome (TS) is a neuropsychiatric disorder with childhood onset characterized by chronic motor and vocal tics; however, the current diagnosis of TS patients is subjective, as it is mainly assessed based on the parents' description alongside specific evaluations. The early and accurate diagnosis of TS based ...

journal_title：Brain topography

authors： Duan K,Wu Q,Liao Y,Si Y,Bore JC,Li F,Tao Q,Lin L,Lei W,Hu X,Yao D,Pei C,Zhang T,Huang L,Xu P

更新日期：2021-01-01 00:00:00

abstract：:Event related potentials (ERPs) to an auditory odd-ball paradigm were recorded with the linked earlobe reference (LER) and with a computer calculated average reference (AR), excluding the two linked earlobe derivations. The study was performed in 30 patients with lesions of frontal, parietal, occipital cortex, unilate...

journal_title：Brain topography

authors： Onofrj M,Fulgente T,Malatesta G,Locatelli T

更新日期：1994-07-01 00:00:00

abstract：:The use of tracers is an important technique available for studying cerebral function. Changes in 'signal' are large, but as a result of its photon limited nature, the measurement of this signal is limited: spatially, temporally and in terms of accuracy. The most commonly used single photon (SPECT) system (as apposed ...

journal_title：Brain topography

authors： Todd-Pokropek AE

更新日期：1992-01-01 00:00:00

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：:What happens if you see a person pronouncing the word "go" after having gestured "stop"? Differently from iconic gestures, that must necessarily be accompanied by verbal language in order to be unambiguously understood, symbolic gestures are so conventionalized that they can be effortlessly understood in the absence o...

journal_title：Brain topography

authors： Fabbri-Destro M,Avanzini P,De Stefani E,Innocenti A,Campi C,Gentilucci M

更新日期：2015-07-01 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：:Recent evidence suggests that transient increases in scalp electroencephalography (EEG) gamma band power (above 30 Hz) can be due to miniature eye movements. Although, these findings do not raise doubts about the widely established role of gamma range neural synchrony, it does call for caution when it comes to interpr...

journal_title：Brain topography

authors： Jerbi K,Freyermuth S,Dalal S,Kahane P,Bertrand O,Berthoz A,Lachaux JP

更新日期：2009-06-01 00:00:00

abstract：:EEG-signals were recorded from subjects as they performed a modified version of Schneider's and Shiffrin's memory search paradigm. The hypothesis was tested whether individual (centre of gravity) alpha frequency, termed IAF, is related to memory performance and/or attentional demands. The results show that memory perf...

journal_title：Brain topography

authors： Klimesch W,Schimke H,Pfurtscheller G

更新日期：1993-04-01 00:00:00

abstract：:Understanding the neural mechanisms of disorders of consciousness (DOC) is essential for estimating the conscious level and diagnosing DOC patients. Although previous studies reported brain functional connectivity (FC) and spontaneous neural activity patterns associated with consciousness, the relationship between the...

journal_title：Brain topography

authors： Wu X,Xie Q,Liu X,Huang H,Ma Q,Wang J,Zhong M,He Y,Niu C,Chen Y,Deng F,Ni X,He Y,Guo Y,Yu R,Huang R

更新日期：2019-05-01 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

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：: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：: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：: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