6533b821fe1ef96bd127ba17
RESEARCH PRODUCT
Electroencephalographic alpha activity modulations induced by breath-holding in apnoea divers and non-divers.
Fabian SteinbergN.h. PixaMichael DoppelmayrMichael Doppelmayrsubject
AdultMalemedicine.medical_specialtyApneaDivingRight prefrontal cortexAlpha (ethology)Experimental and Cognitive PsychologyAudiologyElectroencephalography050105 experimental psychologyFunctional LateralityBreath Holding03 medical and health sciencesBehavioral Neuroscience0302 clinical medicineHeart RateHeart ratemedicineHumans0501 psychology and cognitive sciencesAnalysis of Variancemedicine.diagnostic_test05 social sciencesApneaBrainOxygenAlpha RhythmAnesthesiaLeft prefrontal cortexLateralityAnalysis of variancemedicine.symptomPsychologyhuman activities030217 neurology & neurosurgerydescription
Little is known regarding cortical responses to sustained breath-holding (BH) in expert apnoea divers. The present study therefore investigated electroencephalographic (EEG) alpha activity and asymmetries in apnoea divers (experts) compared to non-divers (novices). EEG of 10 apnoea and 10 non-divers were recorded in the laboratory for either four minutes or for two minutes of BH. Alpha activity and alpha asymmetry (i.e. hemispherical EEG differences) were calculated and compared between expertise level and BH duration. Alpha amplitude in experts significantly decreased at four minutes of BH compared to resting activity, while alpha amplitude significantly decreased in novices only at centro-parietal regions. Alpha-asymmetry analysis revealed that the experts' decrease in alpha at the end of BH was different in the frontal electrodes with the left prefrontal cortex activity higher than that in the right prefrontal cortex. This lateralized pattern reflected differential prefrontal processing of the unique psycho-physiological state of BH.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-10-01 | Physiologybehavior |