Behavioural and cognitive relevance of evoked gamma-band responses in ADHD patients and healthy children [Elektronische Ressource] / von Daniel Lenz

Behavioural and cognitiverelevance of evoked gamma-bandresponses in ADHD patients andhealthy childrenDissertationzur Erlangung des akademischen Gradesdoctor rerum naturalium(Dr. rer. nat.)genehmigt durch die Fakultät für Naturwissenschaftender Otto-von-Guericke-Universität Magdeburgvon Dipl.-Psych. Daniel Lenzgeb. am 8. Dezember 1979 in MagdeburgGutachter: Prof. Dr. Christoph S. HerrmannProf. Dr. Canan Ba?ar-Eroglueingereicht am: 28. Juli 2009verteidigt am: 29. Oktober 2009iiIamamongthosewhothinkthatscience hasgreatbeauty.Ascientistin his laboratory is not only a technician: he is also a child placedbefore natural phenomena which impress him like a fairy tale.Marie CurieivContents1 Introduction 12 Theoretical background 52.1 Attention-Deficit/Hyperactivity Disorder . . . . . . . . . . . . . . 52.1.1 Prevalence and primary symptoms . . . . . . . . . . . . . 52.1.2 Neurobiological and cognitive models . . . . . . . . . . . . 82.1.3 Neurophysiology . . . . . . . . . . . . . . . . . . . . . . . 112.2 Oscillatory activity in the gamma-band of human EEG . . . . . . 152.2.1 Gamma-band activity during cognitive processing . . . . . 152.2.2 Direct links of GBRs to perception and behaviour . . . . . 193 Research questions 234 General methods 254.1 Electroencephalogram . . . . . . . . . . . . . . . . . . . . . . . . 254.2 Event-related potentials . . . . . . . . . . . . . . . . . . . . . . . 274.3 Oscillatory brain activity . . . . . . . . . . . . . .