Improved accuracy of MEG localization in the temporal region with inclusion of volume current effects.

abstract：:Facilitation and inhibition of return (IOR) are, respectively, faster and slower responses to a peripherally cued target. In a spatially uninformative peripheral cueing task, facilitation is normally observed when the interval between the cue and target stimulus, the stimulus onset asynchrony (SOA), is shorter than 25...

journal_title：Brain topography

authors： Tian Y,Klein RM,Satel J,Xu P,Yao D

更新日期：2011-06-01 00:00:00

abstract：:When evoked responses are used in clinical practice and research the measures that are most commonly considered are the latencies and amplitudes of EP components as measured at a single electrode site. Our recent studies have shown that multichannel recordings yield measures such as potential field asymmetry that may ...

journal_title：Brain topography

authors： Sidman RD,Ford MR,Ramsey G

更新日期：1994-04-01 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

abstract：:Over the last decade, there has been growing interest in aberrant salience as a precursor of positive symptoms in schizophrenia. The present study investigates the neurophysiology of attentional capture by salient stimuli in the visual modality. Evoked oscillatory activity in the gamma frequency range (40 Hz) was asse...

journal_title：Brain topography

authors： Kornmayer L,Leicht G,Mulert C

更新日期：2015-01-01 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：: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：: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 event-related responses of 18 individuals were recorded while they were listening to 3 music clips of 6 s duration which were repeated 30 times each. The music clips differed in the level of their complex structure, induced mood, musical tempo and prominent frequency. They were taken from Mozart's sonata (K. 448),...

journal_title：Brain topography

authors： Jausovec N,Habe K

更新日期：2003-01-01 00:00:00

abstract：:Recent evidence suggests that type 2 diabetes (T2D) is associated with accelerated brain ageing, consistent with the observation of increased risk of cognitive impairment and dementia in affected individuals. Even non-diabetic individuals with impaired fasting plasma glucose (IFG) levels have shown increased cerebral ...

journal_title：Brain topography

authors： Shaw ME,Nettersheim J,Sachdev PS,Anstey KJ,Cherbuin N

更新日期：2017-05-01 00:00:00

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：:EEG reveals brain functions with high temporal resolution. Yet, multiple implicit variables may be involved in limited ERP measures. Special computation techniques are needed to recover these parameters. In the study of attention, we can obtain the ERP in attended (V) and unattended (U) conditions. Usually, the effect...

journal_title：Brain topography

authors： Yao D

更新日期：2003-10-01 00:00:00

abstract：:Singular value decomposition is a robust numerical method for decomposing a matrix of multichannel EEG or EP data into a sharply reduced set of features with corresponding waveform, amplitude, and spatial vectors. In 19 normal subjects aged 19 to 40 years, the three largest features computed by the SVD algorithm accou...

journal_title：Brain topography

authors： Harner RN,Riggio S

更新日期：1989-10-01 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：:The processing of human bodies is important in social life and for the recognition of another person's actions, moods, and intentions. Recent neuroimaging studies on mental imagery of human body parts suggest that the left hemisphere is dominant in body processing. However, studies on mental imagery of full human bodi...

journal_title：Brain topography

authors： Blanke O,Ionta S,Fornari E,Mohr C,Maeder P

更新日期：2010-09-01 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：: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：: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：:Emotionally arousing events can distort our sense of time. We used mixed block/event-related fMRI design to establish the neural basis for this effect. Nineteen participants were asked to judge whether angry, happy and neutral facial expressions that varied in duration (from 400 to 1,600 ms) were closer in duration to...

journal_title：Brain topography

authors： Tipples J,Brattan V,Johnston P

更新日期：2015-01-01 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：:We applied the following methods to resting-state EEG data from patients with disorders of consciousness (DOC) for consciousness indexing and outcome prediction: microstates, entropy (i.e. approximate, permutation), power in alpha and delta frequency bands, and connectivity (i.e. weighted symbolic mutual information, ...

journal_title：Brain topography

authors： Stefan S,Schorr B,Lopez-Rolon A,Kolassa IT,Shock JP,Rosenfelder M,Heck S,Bender A

更新日期：2018-09-01 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：: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：: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：: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：:Multisensory processes include the capacity to combine information from the different senses, often improving stimulus representations and behavior. The extent to which multisensory processes are an innate capacity or instead require experience with environmental stimuli remains debated. We addressed this knowledge ga...

journal_title：Brain topography

authors： Maitre NL,Key AP,Slaughter JC,Yoder PJ,Neel ML,Richard C,Wallace MT,Murray MM

更新日期：2020-09-01 00:00:00

abstract：:A single flash accompanied by two auditory beeps tends to be perceived as two flashes (Shams et al. Nature 408:788, 2000, Cogn Brain Res 14:147-152, 2002). This phenomenon is known as 'sound-induced flash illusion.' Previous neuroimaging studies have shown that this illusion is correlated with modulation of activity i...

journal_title：Brain topography

authors： Rosenthal O,Shimojo S,Shams L

更新日期：2009-05-01 00:00:00

abstract：:Most EEG studies analysing speech production with event related brain potential (ERP) have adopted silent metalinguistic tasks or delayed or tacit picture naming in order to avoid possible artefacts during motor preparation. A central issue in the interpretation of these results is whether the processes involved in th...

journal_title：Brain topography

authors： Laganaro M,Perret C

更新日期：2011-03-01 00:00:00

abstract：:A visual three-stimulus (target, nontarget, standard) paradigm was employed in which subjects responded only to the target. Nontarget stimulus properties were varied systematically to evaluate how stimulus typicality (non-novel vs. novel) across task discrimination (easy vs. difficult) conditions affects P3a scalp top...

journal_title：Brain topography

authors： Polich J,Comerchero MD

更新日期：2003-04-01 00:00:00

abstract：:Fronto-temporal areas process shared elements of speech and music. Improvisational psychodynamic music therapy (MT) utilizes verbal and musical reflection on emotions and images arising from clinical improvisation. Music listening is shifting frontal alpha asymmetries (FAA) in depression, and increases frontal midline...

journal_title：Brain topography

authors： Fachner J,Gold C,Erkkilä J

更新日期：2013-04-01 00:00:00

abstract：:Advanced functional neuroimaging approaches dealing with motor imagery have disclosed covert cognitive processes in patients with disorders of consciousness (DoC). However, motor impairment and cognitive-motor dissociation can bias such approaches. Fourteen patients with post-traumatic DoC and ten healthy controls (HC...

journal_title：Brain topography

authors： Naro A,Calabrò RS,Leo A,Russo M,Milardi D,Cannavò A,Manuli A,Buda A,Casella C,Bramanti P,Cacciola A,Bramanti A

更新日期：2018-07-01 00:00:00