Document Detail

Analysis of single trial movement-related brain macropotential.
MedLine Citation:
PMID:  8089035     Owner:  NLM     Status:  MEDLINE    
A parametric method of identification of movement-related brain macropotentials on a single trial basis through an ARX (autoregressive with exogenous inputs) algorithm is presented. The basic estimation of the information contained in the single trial is taken from an average carried out on a sufficient number of trials, while the noise sources, EEG and EOG are characterized as exogenous inputs in the model. The simulations as well as the experimental results confirm the capability of the model to drastically improve the signal/noise ratio in each single trial and to satisfactorily identify the contributions of signal and noise in the overall recording. This way, using the same algorithm, a particularly efficient reduction of ocular artifacts is also achieved. The movement-related brain macropotentials recorded in three subjects show a high degree of variability from trial and this effect seems to be related to programming processes and evaluation of errors.
G A Chiarenza; S Cerutti; D Liberati
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of psychophysiology : official journal of the International Organization of Psychophysiology     Volume:  16     ISSN:  0167-8760     ISO Abbreviation:  Int J Psychophysiol     Publication Date:  1994 May 
Date Detail:
Created Date:  1994-10-18     Completed Date:  1994-10-18     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8406214     Medline TA:  Int J Psychophysiol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  163-74     Citation Subset:  IM; S    
Istituto di Neuropsichiatria Infantile, Università di Milano, Ospedale di Rho, Italy.
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MeSH Terms
Evoked Potentials, Visual / physiology*
Motion Perception / physiology*
Psychomotor Performance / physiology

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