Analysis of functional components of P300 by wavelet transform

Demiralp T., Istefanopulos Y., Ademoglu A., Yordanova J., Kolev V.

10th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society, HONG KONG, PEOPLES R CHINA, 29 October - 01 November 1998, vol.20, pp.1992-1995 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 20
  • City: HONG KONG
  • Country: PEOPLES R CHINA
  • Page Numbers: pp.1992-1995
  • Istanbul University Affiliated: Yes


The wavelet transform (WT) was applied to event-related potentials (ERPs) elicited in oddball paradigm to investigate the presence of several functional components occuring in the P300 latency range. Quadratic B-spline WT was used to decompose the single-sweep ERPs into four octaves. The analysis demonstrates that several delta, theta, and alpha frequency components in the P300 latency range differ in latency and amplitude between target and nontarget processing. These findings indicate that P300 is composed of multiple functional components and the WT is a powerful technique to help study them.