Testing for nested oscillation.
J Neurosci Methods
; 174(1): 50-61, 2008 Sep 15.
Article
em En
| MEDLINE
| ID: mdl-18674562
ABSTRACT
Nested oscillation occurs when the amplitude of a faster rhythm is coupled to the phase of a slower rhythm. It has been proposed to underlie the discrete nature of perception and the capacity of working memory and is a phenomenon observable in human brain imaging data. This paper compares three published methods for detecting nested oscillation and a fourth method proposed in this paper. These are (i) the modulation index, (ii) the phase-locking value (PLV), (iii) the envelope-to-signal correlation (ESC) and (iv) a general linear model (GLM) measure derived from ESC. We applied the methods to electrocorticographic (ECoG) data recorded during a working-memory task and to data from a simulated hippocampal interneuron network. Further simulations were then made to address the dependence of each measure on signal to noise level, coupling phase, epoch length, sample rate, signal nonstationarity, and multi-phasic coupling. Our overall conclusion is that the GLM measure is the best all-round approach for detecting nested oscillation.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Relógios Biológicos
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Mapeamento Encefálico
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Córtex Cerebral
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Eletroencefalografia
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Potenciais Evocados
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Neurônios
Limite:
Humans
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Male
Idioma:
En
Revista:
J Neurosci Methods
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Reino Unido