6533b86dfe1ef96bd12cab4a
RESEARCH PRODUCT
Covariation of spectral and nonlinear EEG measures with alpha biofeedback.
Jürgen FellJoachim RöschkePeter KlaverGuillén FernándezHakim ElfadilChristian E. Elgersubject
AdultMalemedicine.medical_specialtymedicine.medical_treatmentPhysics::Medical PhysicsAlpha (ethology)Pathofysiologie van Hersenen en GedragSharpeningPathophysiology of Brain and BehaviourElectroencephalographyAudiologyBiofeedbackmedicineHumansCommunicationRange (particle radiation)medicine.diagnostic_testQuantitative Biology::Neurons and Cognitionbusiness.industryGeneral NeuroscienceSpectral densityBrainReproducibility of ResultsBiofeedback PsychologyElectroencephalographyGeneral Medicinebody regionsNonlinear systemAlpha RhythmAmplitudeFemalebusinessPsychologypsychological phenomena and processesdescription
Item does not contain fulltext This study investigated how different spectral and nonlinear EEG measures covaried with alpha power during auditory alpha biofeedback training, performed by 13 healthy subjects. We found a significant positive correlation of alpha power with the largest Lyapunov-exponent, pointing to an increased dynamical instability of the EEG accompanying alpha enhancement. Alpha power amplification, moreover, was significantly correlated with a decrease of spectral entropy within the alpha range. This outcome reflects a sharpening of the alpha peak during biofeedback training. The fact that the sharpening effect clearly preceded the increase of alpha amplitude could be exploited in future biofeedback settings.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-12-19 |