Evidence of state-dependent interhemispheric relationships in lizard EEG during the awake state

Author

Pereda, Ernesto ; Gamundi, Antoni ; Nicolau, Maria C. ; De Vera, Luis ; González, Julián J.

Author_Institution

Departamento de Fisica Basica, Univ. de La Laguna, Tenerife, Spain

Volume

49

Issue

6

fYear

2002

fDate

6/1/2002 12:00:00 AM

Firstpage

548

Lastpage

555

Abstract

The electroencephalogram (EEG) from both hemispheres of eight Canary lizards Gallotia galloti was registered at 25°C and 35°C during awake state with open eyes (OE) and closed eyes. The possible interdependence between the recorded EEGs was assessed by means of newly developed methods of multivariate nonlinear time-series analysis. The interdependence turned out to be significant and greater for the OE state at both temperatures, although it was of linear type in most of the cases. We conclude that the methods can be successfully applied to study the interdependence between noisy, low-amplitude EEGs.

Keywords

biothermics; electroencephalography; signal processing; time series; zoology; 25 C; 35 C; Gallotia galloti; awake state; canary lizards; closed eyes; continuous record; electrical activity; integrated electrical activity; lizard EEG; multivariate nonlinear time-series analysis; noninvasive methods; open eyes; state-dependent interhemispheric relationships; Electroencephalography; Eyes; Helium; Humans; Neurons; Scalp; Signal analysis; Signal generators; Temperature; Time series analysis; Animals; Electroencephalography; Eye Movements; Lizards; Models, Neurological; Nonlinear Dynamics; Reproducibility of Results; Sensitivity and Specificity; Signal Processing, Computer-Assisted; Wakefulness;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/TBME.2002.1001969

Filename

1001969