0000000000161140

AUTHOR

Andreas J. Fallgatter

showing 3 related works from this author

Alpha-Synchronized Stimulation of the Dorsolateral Prefrontal Cortex (DLPFC) in Major Depression: A Proof-of-Principle EEG-TMS Study

2018

High-frequency repetitive transcranial magnetic stimulation (rTMS) of the left dorsolateral prefrontal cortex (DLPFC) shows therapeutic potential in pharmaco-resistant patients with major depression. However, clinical efficacy is limited by high inter-individual variability and low response rates. One possible strategy to improve the effect size and consistency may be brain state dependent brain stimulation, i.e. coupling of TMS pulses to the endogenous brain states as reflected by the instantaneous oscillatory brain activity. Here we present findings from a proof-of-principle study of alpha-oscillation synchronized brain stimulation of the frontal cortex in patients with major depression (…

medicine.diagnostic_testbusiness.industryBrain activity and meditationmedicine.medical_treatmentAlpha (ethology)StimulationElectroencephalographybehavioral disciplines and activitiesTranscranial magnetic stimulationDorsolateral prefrontal cortexmedicine.anatomical_structurenervous systemBrain stimulationMedicinebusinessNeurosciencepsychological phenomena and processesDepression (differential diagnoses)
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EEG Data Quality: Determinants and Impact in a Multicenter Study of Children, Adolescents, and Adults with Attention-Deficit/Hyperactivity Disorder (…

2021

Electroencephalography (EEG) represents a widely established method for assessing altered and typically developing brain function. However, systematic studies on EEG data quality, its correlates, and consequences are scarce. To address this research gap, the current study focused on the percentage of artifact-free segments after standard EEG pre-processing as a data quality index. We analyzed participant-related and methodological influences, and validity by replicating landmark EEG effects. Further, effects of data quality on spectral power analyses beyond participant-related characteristics were explored. EEG data from a multicenter ADHD-cohort (age range 6 to 45 years), and a non-ADHD sc…

medicine.medical_specialtymedia_common.quotation_subjectMedizin610artifactsElectroencephalographyAudiologyArticle050105 experimental psychologylcsh:RC321-571electroencephalography (EEG); data quality; attention-deficit/hyperactivity disorder (ADHD); artifacts; multicenter study03 medical and health sciences0302 clinical medicineContinuous performance taskmedicinedata qualityAttention deficit hyperactivity disorder0501 psychology and cognitive sciencesQuality (business)electroencephalography (EEG)ddc:610lcsh:Neurosciences. Biological psychiatry. Neuropsychiatrymedia_commonCued speechmedicine.diagnostic_testGeneral Neuroscience05 social sciencesattention-deficit/hyperactivity disorder (ADHD)ReplicateStepwise regressionmedicine.diseasemulticenter studyData qualityPsychology030217 neurology & neurosurgeryBrain Sciences
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The time course of temporal discrimination: An ERP study

2009

Objective: The question of how temporal information is processed by the brain is still a matter of debate. This study aimed to elucidate the brain electrical activity associated with a visual temporal discrimination task. Methods: For this purpose, 44 participants were required to compare pairs of sequentially presented time intervals: a fixed standard interval (1000 ms), and an equal-to-standard, longer (1200 ms) or shorter (800 ms) comparison interval. Behavioural data and event-related potentials (ERPs) were analyzed. Results: Long intervals were more rapidly identified than short intervals. The amplitude of the contingent negative variation (CNV) found at frontocentral sites before the …

AdultMalemedicine.medical_specialtyTime FactorsTime FactorAdolescentVisual time discriminationAudiologyDevelopmental psychologyDiscrimination LearningYoung AdultCognitionMemoryContingent negative variation (CNV)Physiology (medical)medicineHumansEvoked PotentialsTemporal discriminationSettore M-PSI/02 - Psicobiologia E Psicologia FisiologicaWorking memoryElectroencephalographyCognitionInterval timingMiddle AgedTemporal LobeSensory SystemsElectrophysiological PhenomenaContingent negative variationElectrophysiologyInterval (music)medicine.anatomical_structureReference memoryNeurologyDuration (music)ScalpEvoked Potentials VisualFemaleNeurology (clinical)Evoked PotentialSensory SystemPsychologyHuman
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