Search results for "Eeg rhythms"

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Resting-state posterior alpha rhythms are abnormal in subjective memory complaint seniors with preclinical Alzheimer's neuropathology and high educat…

2020

International audience; Cognitive reserve is present in Alzheimer's disease (AD) seniors with high education attainment making them clinically resilient to extended brain neuropathology and neurodegeneration. Here, we tested whether subjective memory complaint (SMC) seniors with AD neuropathology and high education attainment of the prospective INSIGHT-preAD cohort (Paris) may present abnormal eyesclosed resting state posterior electroencephalographic rhythms around individual alpha frequency peak, typically altered in AD patients. The SMC participants negative to amyloid PET AD markers (SMCneg) with high (over low-moderate) education level showed higher posterior alpha 2 power density (pos…

0301 basic medicineMaleAgingpsychology [Alzheimer Disease]alpha rhythms; INSIGHT-preAD study; preclinical Alzheimer's disease (AD); preclinical Alzheimer's neuropathology; resting state EEG rhythms; subjective memory complaint (SMC)physiopathology [Brain]Cohort Studies0302 clinical medicineCognitive ReserveMedicineProspective StudiesCognitive reserveAged 80 and over[SDV.NEU.PC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior4. EducationGeneral NeuroscienceNeurodegenerationdiagnosis [Alzheimer Disease]BrainCognitionElectroencephalographyMagnetic Resonance ImagingAlpha Rhythm[SCCO.PSYC]Cognitive science/PsychologyEducational StatusFemale[SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]RestAlpha (ethology)NeuropathologyNeuroprotectionphysiopathology [Alzheimer Disease]03 medical and health sciencesRhythmAlzheimer DiseaseMemoryHumansddc:610AgedResting state fMRIbusiness.industry[SCCO.NEUR]Cognitive science/Neurosciencemedicine.disease030104 developmental biologyphysiology [Rest]Positron-Emission TomographyNeurology (clinical)Geriatrics and GerontologybusinessNeuroscience030217 neurology & neurosurgeryDevelopmental Biology
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Human sleep under the influence of pulsed radiofrequency electromagnetic fields: A polysomnographic study using standardized conditions

1998

To investigate the influence of radiofrequency electromagnetic fields (EMFs) of cellular phone GSM signals on human sleep electroencephalographic (EEG) pattern, all-night polysomnographies of 24 healthy male subjects were recorded, both with and without exposure to a circular polarized EMF (900 MHz, pulsed with a frequency of 217 Hz, pulse width 577 μs, power flux density 0.2 W/m2. Suppression of rapid eye movement (REM) sleep as well as a sleep-inducing effect under field exposure did not reach statistical significance, so that previous results indicating alterations of these sleep parameters could not be replicated. Spectral power analysis also did not reveal any alterations of the EEG rh…

AdultMaleElectromagnetic fieldmedicine.medical_specialtyanimal structuresAdolescentRadio WavesPhysiologyPolysomnographyAcousticsBiophysicsSleep REMElectroencephalographyAudiologyElectromagnetic FieldsmedicineHumansRadiology Nuclear Medicine and imagingBioelectromagneticsPhysicsmedicine.diagnostic_testPulsed radiofrequencyEye movementElectroencephalographyGeneral MedicineSleep in non-human animalsTelephoneEeg rhythmsPower fluxSleepBioelectromagnetics
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