Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Exploratory data analysis of evoked response single trials based on minimal spanning tree
Autore:
Laskaris, NA; Ioannides, AE;
Indirizzi:
RIKEN, Brain Sci Inst, Lab Human Brain Dynam, Wako, Saitama 35101, Japan RIKEN Wako Saitama Japan 35101 an Brain Dynam, Wako, Saitama 35101, Japan
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 4, volume: 112, anno: 2001,
pagine: 698 - 712
SICI:
1388-2457(200104)112:4<698:EDAOER>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN AUDITORY-CORTEX; POTENTIAL SIGNALS; BRAIN POTENTIALS; MAGNETIC-FIELDS; MEG SIGNALS; IDENTIFICATION; AVERAGES; MEMORY;
Keywords:
single trial analysis; cluster analysis; selective averaging; visualization; monitoring; M100;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Ioannides, AE RIKEN, Brain Sci Inst, Lab Human Brain Dynam, Wako, Saitama 35101, Japan RIKEN Wako Saitama Japan 35101 , Wako, Saitama 35101, Japan
Citazione:
N.A. Laskaris e A.E. Ioannides, "Exploratory data analysis of evoked response single trials based on minimal spanning tree", CLIN NEU, 112(4), 2001, pp. 698-712

Abstract

Objective: An exploratory data analysis framework, based on minimal spanning tree, is proposed as a means to support the analysis of single trial (ST) electrophysiological signals. The core of this framework is the compact description of the input ST sample in a form of content-dependent ordered lists. Based on the established hierarchies, efficient ways to increase the SNR, extract prototypical responses, visualize possible self-organization trends in the sample and track the course of evoked response along the trial-to-trial dimension, are proposed. Method: Magnetoencephalographic auditory evoked responses were used for demonstrating and validating the introduced framework. Results and conclusion: The results demonstrate the benefits, from this intelligent manipulation of STs, in understanding and enhancing the actual evoked signal. Specifically we find support for stimulus-induced phase-resetting hypothesis in the 3-20 Hz band, the existence of trials void of the prototypical evoked response, and an order across the single trial set hintingat an underlying process with long time scale. (C) 2001 Elsevier Science ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 17/01/20 alle ore 20:19:56