creators_name: Kolev, Vasil
creators_name: Demiralp, Tamer
creators_name: Yordanova, Juliana
creators_name: Ademoglu, Ahmet
creators_name: Isoglu-Alkaç, Ümmühan
type: journalp
datestamp: 1998-06-22
lastmod: 2011-03-11 08:53:38
metadata_visibility: show
title: Time-Frequency Analysis Reveals Multiple Functional Components During Oddball P300
ispublished: pub
subjects: behav-neuro-sci
subjects: comp-neuro-sci
subjects: neuro-physio
subjects: physio-psy
subjects: psy-bio
full_text_status: public
keywords: cognitive processes, event-related brain potentials (ERPs), P300 (P3) wave, time-frequency analysis, Wavelet transform (WT)
abstract: A time-frequency decomposition was applied to rare target and frequent non-target event-related potentials (ERPs) elicited in an oddball condition to assess whether multiple functional components occur in the P300 latency range. The wavelet transform (WT) was used because it allows capture of simultaneous or partly overlapping components in ERPs without loosing their temporal relationships. The application of a four-octave quadratic B-spline wavelet transform at the level of single-sweep data allowed us to obtain new information and revealed the presence of separate events during P300 development. Several delta, theta, and alpha frequency components in the P300 latency range differed between target and non-target processing. These findings indicate that P300 is composed of multiple functional components and that the WT method is of use for the study of P300 functional correlates more precisely.
date: 1997-05
date_type: published
publication: NeuroReport
volume: 8
number: 8
pagerange: 2061-2065
refereed: TRUE
citation:   Kolev, Vasil and Demiralp, Tamer and Yordanova, Juliana and Ademoglu, Ahmet and Isoglu-Alkaç, Ümmühan  (1997) Time-Frequency Analysis Reveals Multiple Functional Components During Oddball P300.  [Journal (Paginated)]     
document_url: http://cogprints.org/48/1/wavelet.htm