Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Nonlinear dynamic analysis of the EEG in patients with Alzheimer's diseaseand vascular dementia
Autore:
Jeong, J; Chae, TH; Kim, SY; Han, SH;
Indirizzi:
Yale Univ, Sch Med, Dept Diagnost Radiol, New Haven, CT 06520 USA Yale Univ New Haven CT USA 06520 Diagnost Radiol, New Haven, CT 06520 USA Catholic Univ Korea, Coll Med, Dept Psychiat, Seoul, South Korea Catholic Univ Korea Seoul South Korea Dept Psychiat, Seoul, South Korea Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea Korea Adv Inst Sci & Technol Taejon South Korea 305701 5701, South Korea
Titolo Testata:
JOURNAL OF CLINICAL NEUROPHYSIOLOGY
fascicolo: 1, volume: 18, anno: 2001,
pagine: 58 - 67
SICI:
0736-0258(200101)18:1<58:NDAOTE>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
GLOBAL DIMENSIONAL COMPLEXITY; TIME-SERIES; STRANGE ATTRACTORS; CHAOTIC DYNAMICS; SENILE DEMENTIA; DIFFERENTIATE ALZHEIMERS; MULTIINFARCT DEMENTIA; COGNITIVE IMPAIRMENT; EMBEDDING DIMENSION; EPILEPTIC SEIZURES;
Keywords:
Alzheimer's disease; vascular dementia; EEG; correlation dimension; Lyapunov exponent;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
83
Recensione:
Indirizzi per estratti:
Indirizzo: Jeong, J Yale Univ, Sch Med, Dept Diagnost Radiol, POB 208042,333 Cedar St, New Haven, CT 06520 USA Yale Univ POB 208042,333 Cedar St New Haven CT USA 06520 6520 USA
Citazione:
J. Jeong et al., "Nonlinear dynamic analysis of the EEG in patients with Alzheimer's diseaseand vascular dementia", J CL NEURPH, 18(1), 2001, pp. 58-67

Abstract

To assess nonlinear EEG activity in patients with Alzheimer's disease (AD)and vascular dementia (VaD), the authors estimated the correlation dimension (D2) and the first positive Lyapunov exponent (L1) of the EEGs in both patients and age-matched healthy control subjects. EEGs were recorded in 15 electrodes from 12 AD patients, 12 VaD patients, and 14 healthy subjects. The AD patients had significantly lower D2 values than the normal control subjects, (P < H > 0.05), except at the F7 and the O1 electrodes, and the VaDpatients, except at the C3 and the C4 electrodes. The VaD patients had relatively increased values of D2 and L1 compared with the AD patients, and rather higher values of D2 than the normal control subjects at the F7, F4, F8, Fp2, O1, and O2 electrodes. The L1 values of the EEGs were also lower forthe AD patients than for the normal control subjects, except in the O1 andthe O2 channels, and for the VaD patients at all electrodes. The L1 valueswere higher for the VaD patients than for the normal control subjects (F3,F4, F8, O1, and O2). In addition, the authors detected that the VaD patients had an uneven distribution of D2 values over the regions than the AD patients and the normal control subjects, although the statistics do not confirm this. By contrast, AD patients had uniformly lower D2 values in most regions, indicating that AD patients have less complex temporal characteristics of the EEG in entire regions. These nonlinear analyses of the EEG may be helpful in understanding the nonlinear EEG activity in AD and VaD.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 09:32:39