Talk by Prof. Changsong Zhou

Event Date: 
Thu, 10/09/2015 - 10:30

CBC Seminars

 

Changsong Zhou, from Department of Physics, Center for Nonlinear Studies, Institute of Computational and Theoretical Studies, Hong Kong Baptist University invited by Gustavo Deco (CNS Group)

 

Title: RIDE – a new method for the decomposition of ERPs based on latency variability: principles and applications

 

Abstract: 

The traditional averaging method to extract event-related potentials (ERPs) from the continuous EEG assumes a fixed temporal relationship between the eliciting event and the components reflecting the neurocognitive processing of these events. Although this assumption may be substantially violated in many cases, which could severely distort component latencies and amplitudes, there has been no theoretically satisfying and practically applicable solution for this problem. Together with cognitive scientist at Humboldt University at Berlin we recently developed a new method RIDE (Residue Iteration Decomposition), which separates the ERP into different component clusters, time-locked to external events (stimuli and responses) and to central processes. RIDE provides a tool to (1) separate overlapping components, (2) provide information about amplitudes and latencies on a single trial basis, and (3) reconstruct the full ERP waveshape, corrected for the distortion effects of latency jitter and component overlap. This talk will give an introduction into the principles of RIDE and illustrate the applications of RIDE in various experiments and its further extension to source localization and Dynamical Causal Modeling. 
 
Papers:
 
 
 
 

When: (non-standard day and time!!)

Thursday, September 10th, at 10:30

 

Where:

Campus de la Comunicacio UPF, C/ Roc Boronat, 132. MAP
Edifici 52 (Ed. Roc Boronat), room 52.S25

Universitat Pompeu Fabra.

 

How to get there:

Metro: Llacuna or Poblenou <L4>, Glories <L1>, Tram: Ca l’aranyó [T4]