Consulta: subjectFacets:"Source localization"
Registros recuperados: 2
Data/hora: 11/06/2024 15:48:52

Complex, multifocal, individual-specific attention-related cortical functional circuits
Provedor de dados: 48
Autores: BASILE,LUIS F. H.
Recent studies focusing on the analysis of individual patterns of non-sensory-motor CNS activity may significantly alter our view of CNS functional mapping. We have recently provided evidence for highly variable attention-related Slow Potential (SP) generating cortical areas across individuals (Basile et al., 2003, 2006). In this work, we present new evidence, searching for other physiological indexes of attention by a new use of a well established method, for individual-specific sets of cortical areas active during expecting attention. We applied latency corrected peak averaging to oscillatory bursts, from 124-channel EEG recordings, and modeled their generators by current density reconstruction. We first computed event-related total power, and averaging...
Tipo: Journal article
Palavras-chave: Attention; Cortical electrical activity; High-resolution electroencephalography; Slow potentials; Source localization; Functional mapping.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000500007

Topographic abnormality of slow cortical potentials in schizophrenia
Provedor de dados: 56
Autores: Basile,L.F.H.; Yacubian,J.; Ferreira,B.L.C.; Valim,A.C.; Gattaz,W.F.
A recent study from our laboratory has provided evidence for the generation of slow potentials occurring in anticipation to task-performance feedback stimuli, in multiple association cortical areas, consistently including two prefrontal areas. In the present study, we intended to determine whether these slow potentials would indicate some abnormality (topographic) in schizophrenic patients, and thus serve as an indication of abnormal association cortex activity. We recorded slow potentials while subjects performed a paired-associates memory task. A 123-channel EEG montage and common average reference were used for 20 unmedicated schizophrenic (mean duration of illness: 11.3 ± 9.2 years; mean number of previous hospitalizations: 1.2 ± 1.9) and 22 healthy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High-resolution EEG; Slow potentials; Contingent negative variations; Schizophrenia; Source localization; Functional brain mapping.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000100014