Abstract
In this study, the pattern-reversal visual evoked potentials (PRVEP's) collected from normal and demented subjects are investigated by applying the quadratic spline wavelet analysis. The data are decomposed into six octave frequency bands. For quantitative purposes, the wavelet coefficients in the residual waveform representing the delta-theta band activity (0-8 Hz) are explored to characterize the (N70-P100-N130) complex. Specifically, the coefficients corresponding to the location of N70, P100, and N130 peaks are investigated for their sign in order to test whether they represent a consistent (N70-P100-N130) complex in the averaged waveform. Waveforms with normal latency (N70-P100-N130) complex are observed to have positive second, negative third, and positive fourth coefficients in amplitude in their residual scale standing for the delta-theta (0-8 Hz) band activity. The method allows for the analysis of oscillatory-phase behavior of the normal and pathological PRVEP's in their delta-theta band based on a few quantitative measures consistent with the time-frequency occurrence of the major components of the evoked potential.
Keywords
WaveletResidualAmplitudeWaveformElectroencephalographyQuadratic equationWavelet transformNuclear magnetic resonanceMathematicsMathematical analysisEvoked potentialPhysicsPattern recognition (psychology)Speech recognitionOpticsArtificial intelligenceNeuroscienceComputer sciencePsychologyAlgorithmGeometry
Affiliated Institutions
Related Publications
A New Approach to Endogenous Event-Related Potentials in Man: Relation Between Eeg and P300-Wave
The family of late positive waves which occur at latencies of 250 to 500 msec (P300) has been the most widely studied endogenous event related potential of the brain. We perform...
Publication Info
- Year
- 1997
- Type
- article
- Volume
- 44
- Issue
- 9
- Pages
- 881-890
- Citations
- 59
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
59
OpenAlex
Cite This
Ahmet Ademoğlu,
E. Micheli-Tzanakou,
Y. Istefanopoulos
(1997).
Analysis of pattern reversal visual evoked potentials (PRVEPs) by spline wavelets.
IEEE Transactions on Biomedical Engineering
, 44
(9)
, 881-890.
https://doi.org/10.1109/10.623057
Identifiers
- DOI
- 10.1109/10.623057