Wavelet coherence of EEG signals for a visual oddball task

Neural co-activation in frontal and central cortex was examined during a visual oddball task using wavelet coherence. EEG was recorded during a visual oddball task, presented to 12 participants with a random mix of 15% oddball targets and 85% frequent non-target letters over 265 trials. Wavelet coherence of individual trials was shown to distinguish frequent and oddball trials. Averaged wavelet coherence showed significant differences: oddball targets showed higher delta-theta activity whereas frequent background stimuli showed higher gamma activity. Increased gamma coherence appeared to be related to expectation of the targets with our analysis showing an R(2) of 0.935 for the relationship between averaged sections of gamma coherence and the number of intervening (frequent) trials since the last oddball.

[1]  C. Torrence,et al.  A Practical Guide to Wavelet Analysis. , 1998 .

[2]  Jiuk Jung,et al.  Induced gamma-band activity in a similarity grouping task , 2004 .

[3]  P. Nunez,et al.  EEG and MEG coherence: Measures of functional connectivity at distinct spatial scales of neocortical dynamics , 2007, Journal of Neuroscience Methods.

[4]  Paul S. Addison,et al.  The Illustrated Wavelet Transform Handbook , 2002 .

[5]  Júlio C. Nievola,et al.  Pattern recognition for brain-computer interface on disabled subjects using a wavelet transformation , 2008, 2008 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology.

[6]  Ingrid Daubechies,et al.  The wavelet transform, time-frequency localization and signal analysis , 1990, IEEE Trans. Inf. Theory.

[7]  J. Polich.  Updating P300: An integrative theory of P3a and P3b , 2007, Clinical Neurophysiology.

[8]  P. Goldman-Rakic,et al.  Infrequent events transiently activate human prefrontal and parietal cortex as measured by functional MRI. , 1997, Journal of neurophysiology.

[9]  P. Goldman-Rakic,et al.  Prefrontal Activation Evoked by Infrequent Target and Novel Stimuli in a Visual Target Detection Task: An Event-Related Functional Magnetic Resonance Imaging Study , 2000, The Journal of Neuroscience.

[10]  A Malanda,et al.  Gamma band responses to target and non-target auditory stimuli in humans , 2004, Neuroscience Letters.

[11]  M. Teplan.  FUNDAMENTALS OF EEG MEASUREMENT , 2002 .

[12]  Vladimir Bostanov,et al.  BCI competition 2003-data sets Ib and IIb: feature extraction from event-related brain potentials with the continuous wavelet transform and the t-value scalogram , 2004, IEEE Transactions on Biomedical Engineering.

[13]  A Mouraux,et al.  Across-trial averaging of event-related EEG responses and beyond. , 2008, Magnetic resonance imaging.

[14]  David Rudrauf,et al.  Estimating the time-course of coherence between single-trial brain signals: an introduction to wavelet coherence , 2002, Neurophysiologie Clinique/Clinical Neurophysiology.

[15]  O. Bertrand,et al.  Oscillatory gamma activity in humans and its role in object representation , 1999, Trends in Cognitive Sciences.

[16]  M. Zervakis,et al.  Time-significant Wavelet Coherence for the Evaluation of Schizophrenic Brain Activity using a Graph theory approach , 2006, 2006 International Conference of the IEEE Engineering in Medicine and Biology Society.

[17]  A. Labarga,et al.  Gamma band activity in an auditory oddball paradigm studied with the wavelet transform , 2001, Clinical Neurophysiology.

[18]  L. Marshall,et al.  Event-related gamma band activity during passive and active oddball tasks. , 1996, Neuroreport.

[19]  Aslak Grinsted,et al.  Nonlinear Processes in Geophysics Application of the Cross Wavelet Transform and Wavelet Coherence to Geophysical Time Series , 2022 .

[20]  O. Bertrand,et al.  Auditory induced 40-Hz activity during a frequency discrimination task , 1998, NeuroImage.

[21]  Scott A. Huettel,et al.  What is odd in the oddball task? Prefrontal cortex is activated by dynamic changes in response strategy , 2004, Neuropsychologia.

[22]  E. Basar,et al.  Detection of P300 Waves in Single Trials by the Wavelet Transform (WT) , 1999, Brain and Language.

[23]  A. T. Walden,et al.  Graphical modelling for brain connectivity via partial coherence , 2009, Journal of Neuroscience Methods.

[24]  E. Miller,et al.  An integrative theory of prefrontal cortex function. , 2001, Annual review of neuroscience.

[25]  P. Hall.  The Bootstrap and Edgeworth Expansion , 1992 .

[26]  Ram Shankar Pathak,et al.  The Wavelet Transform , 2009 .

[27]  Bernhard Hommel,et al.  Enhancing cognitive control through neurofeedback: A role of gamma-band activity in managing episodic retrieval , 2010, NeuroImage.

[28]  Anna Grabowska,et al.  Event-related potentials in children with attention deficit hyperactivity disorder: an investigation using an auditory oddball task. , 2012, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.