Single-trial analysis of the auditory n100 component.

Szczegóły
Abstrakt

Tytuł:: Single-trial analysis of the auditory n100 component.
Autorzy:: Zouridakis G; Biomedical Imaging Lab, Department of Computer Science, University of Houston, TX, USA.
Iyer D
Źródło:: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference [Conf Proc IEEE Eng Med Biol Soc] 2005; Vol. 2005, pp. 4492-5.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Original Publication: Piscataway, NJ : IEEE Service Center, c2004-c2006.
Entry Date(s):: Date Created: 20070207 Date Completed: 20121002 Latest Revision: 20200309
Update Code:: 20240104
DOI:: 10.1109/IEMBS.2005.1615465
PMID:: 17281235
: Czasopismo naukowe

We have recently developed an iterative procedure based on independent component analysis to estimate single trial evoked potentials and used the procedure to analyze data obtained from normal subjects in response to a pure tone, with a whole-head 256-channel recording system. Our results show that new methodology can effectively remove most well-defined artifacts and background activity, and also provide improved estimates of specific components of the evoked potential. With respect to the N100 component, the processed single trials could be separated into two groups, one with trials having the same phase as the average response and another one with trials having the opposite phase, while the number of trials in each group had a very consistent spatial distribution across all subjects. Finally, the sources of the N100 component were primarily due to in-phase responses, while the out-of-phase responses had an antagonistic effect.

Informacja