High frequency gamma oscillations in children - ocular artifacts in the EEG or the material concomitant of cognitive processes
No Thumbnail Available
URL
Journal Title
Journal ISSN
Volume Title
School of Electrical Engineering |
Master's thesis
Checking the digitized thesis and permission for publishing
Instructions for the author
Instructions for the author
Authors
Date
2012
Department
Major/Subject
Lääketieteellinen tekniikka
Mcode
Tfy-99
Degree programme
Language
en
Pages
69
Series
Abstract
Oscillatory gamma-band activity (GBA) occurring at 30 - 100 Hz has been attributed to cognitive processing. Evidence to the contrary suggests that induced high-frequency oscillations in the gamma-band EEG are merely artifacts of saccadic eye movement or muscular activity. This study aimed to review signal processing methods suitable for attenuating saccadic artifacts in EEG data collected from musically trained children and control subjects. With proper pre-processing, induced auditory GBA responses were found in each age group. These responses show a pattern consistent with prior research. More specifically, the frequency and spectral power of the induced gamma-band response appear to be influenced by musical training. The conclusions of this study support the role of induced GBA in higher level cognitive processing.Description
Supervisor
Koskelainen, AriThesis advisor
Huotilainen, MinnaKeywords
EEG, GBA, children, ausitory, induced, gamma