Computationally efficient approaches to calculating significant ERD/ERS changes in the time-frequency plane.
J Neurosci Methods
; 145(1-2): 267-76, 2005 Jun 30.
Article
in En
| MEDLINE
| ID: mdl-15922042
ABSTRACT
This paper addresses some practical issues related to the calculation, display and assessment of the significance of changes in the average time-frequency energy density of event-related brain activity. Using scalp EEG and subdural ECoG example datasets, parametric tests are evaluated as a replacement for previously applied computer-intensive resampling methods. The performance of different estimates of energy density, based on matching pursuit, scalogram and spectrogram, and their Box-Cox transformations is evaluated with respect to the assumption of normality required for the t-test, and the consistency of the final results.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Brain
/
Brain Mapping
Limits:
Adult
/
Humans
/
Male
Language:
En
Journal:
J Neurosci Methods
Year:
2005
Document type:
Article
Affiliation country: