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 from the same subject but evoked by different stimuli), we define a measure (surface energy) at each decomposition scale and for different wavelets. The best wavelet and the best level for comparing the given images can be chosen based on this measure. Our experiments show that for very similar images, their difference can be brought out at some scale level. Three preprocessing steps are needed in order to carry out this wavelet analysis. First, a wavelet denoising step is needed to remove noise from the raw ERP. Secondly, a one-to-one mapping is needed to map scalp surface into a square, because the current wavelet analysis theory and algorithm are constructed on regular domains. Finally, a fitting or interpolation step is needed to construct an image on a regular grid in order to apply the fast wavelet transform algorithms.
journal_name
Brain Topogrjournal_title
Brain topographyauthors
Wang K,Begleiter H,Porjesz Bdoi
10.1023/a:1022209209531subject
Has Abstractpub_date
1998-04-01 00:00:00pages
191-200issue
3eissn
0896-0267issn
1573-6792journal_volume
10pub_type
杂志文章相关文献
BRAIN TOPOGRAPHY文献大全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
pub_type: 杂志文章
doi:10.1007/s10548-008-0044-7
更新日期:2008-06-01 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
pub_type: 杂志文章
doi:10.1007/s10548-020-00765-6
更新日期:2020-05-01 00:00:00
abstract::The integration of vision and somatosensation is required to allow for accurate motor behavior. While both sensory systems contribute to an understanding of the state of the body through continuous updating and estimation, how the brain processes unreliable sensory information remains to be fully understood in the con...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-015-0446-2
更新日期:2016-01-01 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
pub_type: 杂志文章
doi:10.1007/s10548-010-0162-x
更新日期:2011-03-01 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
pub_type: 杂志文章
doi:10.1007/BF01128991
更新日期:1993-04-01 00:00:00
abstract::Humans are highly sensitive to statistical regularities in their environment. This phenomenon, usually referred as statistical learning, is most often assessed using post-learning behavioural measures that are limited by a lack of sensibility and do not monitor the temporal dynamics of learning. In the present study, ...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-016-0518-y
更新日期:2017-03-01 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
pub_type: 杂志文章
doi:10.1007/s10548-017-0544-4
更新日期:2017-05-01 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
pub_type: 杂志文章
doi:10.1007/s10548-016-0511-5
更新日期:2016-11-01 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
pub_type: 杂志文章
doi:10.1007/BF01129003
更新日期:1991-07-01 00:00:00
abstract::The combination of transcranial magnetic stimulation (TMS) with simultaneous electroencephalography (EEG) provides us the possibility to non-invasively probe the brain's excitability, time-resolved connectivity and instantaneous state. Early attempts to combine TMS and EEG suffered from the huge electromagnetic artifa...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-009-0123-4
更新日期:2010-01-01 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
pub_type: 杂志文章
doi:10.1007/BF01191080
更新日期:1993-01-01 00:00:00
abstract::Cognitive performance in attention-deficit/hyperactivity disorder (ADHD) is characterised, in part, by frequent fluctuations in response speed, resulting in high reaction time variability (RTV). RTV captures a large proportion of the genetic risk in ADHD but, importantly, is malleable, improving significantly in a fas...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-017-0554-2
更新日期:2017-05-01 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
pub_type: 杂志文章
doi:10.1007/s10548-014-0391-5
更新日期:2015-09-01 00:00:00
abstract::We trained four right-handed male subjects to detect small changes in the frequency of 21 Hz electrical stimulation applied to digits 2+3+4 of the right hand for 4 hours. Before and after the training, we recorded magnetoencephalographic (MEG) signals when the stimulation was applied to digit 2-5 separately using a wh...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1023/b:brat.0000032858.36816.98
更新日期:2004-07-01 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
pub_type: 杂志文章
doi:10.1007/s10548-018-0643-x
更新日期:2018-09-01 00:00:00
abstract::Nineteen young healthy volunteers (8 males and 11 females) participated in an experimental ice-cube cold pressor test to study topographic changes of EEG parameters in response to painful stimulation. EEG was recorded with 19 electrodes and quantified by amplitude and coherence analyses. Mean amplitudes and values for...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/BF01186771
更新日期:1994-01-01 00:00:00
abstract::Despite genetic, morphological and experimental in vivo, data implying fixed abnormalities in patients with absence seizures, attempts to find highly consistent features in the 3-Hz spike-and-wave pattern recorded during sequential seizures from the same subject have been largely unsuccessful. We used a new data decom...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1023/a:1023462211778
更新日期:1999-01-01 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
pub_type: 杂志文章
doi:10.1023/b:brat.0000006331.10425.4b
更新日期:2003-01-01 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
pub_type: 杂志文章
doi:10.1007/s10548-018-0683-2
更新日期:2019-03-01 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
pub_type: 杂志文章
doi:10.1007/s10548-009-0090-9
更新日期:2009-05-01 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
pub_type: 杂志文章
doi:10.1007/s10548-013-0289-7
更新日期:2014-03-01 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
pub_type: 杂志文章,评审
doi:10.1007/BF01128856
更新日期:1990-10-01 00:00:00
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
pub_type: 杂志文章
doi:10.1007/s10548-011-0172-3
更新日期:2011-06-01 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
pub_type: 杂志文章
doi:10.1007/s10548-013-0311-0
更新日期:2014-01-01 00:00:00
abstract::Functional near-infrared spectroscopy (fNIRS) has been proven reliable for investigation of low-level visual processing in both infants and adults. Similar investigation of fundamental auditory processes with fNIRS, however, remains only partially complete. Here we employed a systematic three-level validation approach...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-015-0424-8
更新日期:2015-09-01 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
pub_type: 杂志文章
doi:10.1007/s10548-012-0217-2
更新日期:2012-07-01 00:00:00
abstract::States of depression are considered to relate to a cognitive bias reactivity to emotional events. Moreover, gender effect may influence differences in emotional processing. The current study is to investigate whether there is an interaction of cognitive bias by gender on emotional processing in minor depression (MiD) ...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-015-0444-4
更新日期:2016-03-01 00:00:00
abstract::Fibromyalgia (FM) is a chronic syndrome involving widespread pain of unclear pathophysiology. FM patients frequently complain about cognitive symptoms that interfere with their daily life activities. Several studies have reported attentional deficits and working memory impairment in FM patients. Nevertheless, the mech...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-017-0561-3
更新日期:2017-07-01 00:00:00
abstract::Sensor selection is typically used in magnetoencephalography (MEG) and scalp electroencephalography (EEG) studies, but this practice cannot differentiate between changes in the distribution of neural sources versus changes in the magnitude of neural sources. This problem is further complicated by (1) subject averaging...
journal_title:Brain topography
pub_type: 杂志文章,评审
doi:10.1007/s10548-007-0040-3
更新日期:2008-04-01 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
pub_type: 杂志文章
doi:10.1007/s10548-020-00811-3
更新日期:2021-01-05 00:00:00