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 assessed during visual processing of physically salient distracters and evaluated in relation to schizotypy and its positive, negative and disorganized dimension. The early evoked visual gamma-band response (GBR) was assessed for 24 healthy participants using EEG time-frequency analysis. Physical salience was constituted by colored stimuli diverting from an ongoing baseline condition. schizotypal personality traits were measured by the schizotypal personality questionnaire (SPQ; Raine in Schizophr Bull 17:555-564, 1991). The early evoked visual GBR was significantly pronounced in the physically salient distracter condition. GBR signal power was significantly correlated with positive schizotypal personality traits (r = 0.588; p = 0.024*). Our results indicate that the early evoked GBR in visual processing of physically salient distracters is associated with schizotypy. These findings refer to the phenomenology of aberrant salience by bridging the gap to neurophysiological research on early sensory selection and attentional capture in the schizophrenia spectrum.
journal_name
Brain Topogrjournal_title
Brain topographyauthors
Kornmayer L,Leicht G,Mulert Cdoi
10.1007/s10548-014-0418-ysubject
Has Abstractpub_date
2015-01-01 00:00:00pages
153-61issue
1eissn
0896-0267issn
1573-6792journal_volume
28pub_type
杂志文章相关文献
BRAIN TOPOGRAPHY文献大全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
pub_type: 杂志文章
doi:10.1007/s10548-011-0199-5
更新日期:2012-04-01 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
pub_type: 杂志文章
doi:10.1023/a:1023467806268
更新日期:2000-04-01 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
pub_type: 杂志文章
doi:10.1007/s10548-012-0265-7
更新日期:2013-07-01 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
pub_type: 杂志文章
doi:10.1007/BF01128847
更新日期:1989-10-01 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::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::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
pub_type: 杂志文章
doi:10.1007/s10548-009-0094-5
更新日期:2009-05-01 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
pub_type: 杂志文章
doi:10.1023/a:1022209209531
更新日期:1998-04-01 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
pub_type: 杂志文章
doi:10.1023/a:1022258620435
更新日期:1999-07-01 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::Although impairments related to somatosensory perception are common in schizophrenia, they have rarely been examined in functional imaging studies. In the present study, magnetoencephalography (MEG) was used to identify neural networks that support attention to somatosensory stimuli in healthy adults and abnormalities...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-009-0122-5
更新日期:2010-03-01 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
pub_type: 杂志文章
doi:10.1007/s10548-015-0460-4
更新日期:2016-03-01 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
pub_type: 杂志文章
doi:10.1007/s10548-018-0692-1
更新日期:2019-05-01 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
pub_type: 杂志文章
doi:10.1007/BF01129665
更新日期:1991-10-01 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::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::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::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
pub_type: 杂志文章
doi:10.1007/BF01131153
更新日期:1992-04-01 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
pub_type: 杂志文章
doi:10.1007/BF01199773
更新日期:1995-01-01 00:00:00
abstract::The simultaneous evaluation of the local electrocorticogram (ECoG) and the more broadly distributed electroencephalogram (EEG) from humans undergoing evaluation for epilepsy surgery has been shown to further the understanding of how pathologies give rise to spontaneous seizures. However, a well-known problem is that t...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-012-0251-0
更新日期:2013-04-01 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
pub_type: 临床试验,杂志文章
doi:10.1007/BF01211176
更新日期:1994-07-01 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
pub_type: 杂志文章
doi:10.1007/s10548-018-0681-4
更新日期:2019-03-01 00:00:00
abstract::Reaction time (RT), the most common measure of CNS efficiency, shows intra- and inter-individual variability. This may be accounted for by hemispheric specialization, individual neuroanatomy, and transient functional fluctuations between trials. To explore RT on these three levels, ERPs were measured in a visual 4-cho...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-016-0473-7
更新日期:2016-07-01 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
pub_type: 杂志文章
doi:10.1007/BF01184786
更新日期:1996-04-01 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
pub_type: 杂志文章
doi:10.1007/s10548-011-0201-2
更新日期:2012-04-01 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
pub_type: 杂志文章
doi:10.1007/BF01187669
更新日期:1995-10-01 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
pub_type: 杂志文章
doi:10.1007/s10548-020-00801-5
更新日期:2021-01-01 00:00:00
abstract::This study examined the effect of modality of stimulation on two measures of cerebral function: (a) the scalp distribution of sensory evoked potentials and (b) the cerebral distribution of radiolabelled HMPAO. Steady-state stimulation in the auditory, somatosensory or visual modality was presented to six subjects. Sca...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/BF01128854
更新日期:1989-10-01 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::Perceptual closure ability is postulated to depend upon rapid transmission of magnocellular information to prefrontal cortex via the dorsal stream. In contrast, illusory contour processing requires only local interactions within primary and ventral stream visual regions, such as lateral occipital complex. Schizophreni...
journal_title:Brain topography
pub_type: 杂志文章
doi:10.1007/s10548-016-0487-1
更新日期:2016-07-01 00:00:00