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Human gamma-band activity: A window to cognitive processing
Ist Teil von
Neuroreport, 2005-02, Vol.16 (3), p.207-211
Ort / Verlag
Hagerstown, MD: Lippincott Williams & Wilkins, Inc
Erscheinungsjahr
2005
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
This review highlights recent developments in research on human cortical oscillations in the gamma-band range (30–100 Hz). Electroencephalography has demonstrated a role of these signals for cognitive functions including visual perception, attention, learning and memory. During auditory processing, magnetoencephalogram has identified oscillatory activity in higher frequency ranges and with a more discrete localization than electroencephalogram. Gamma-band activity increases have been observed in the putative auditory dorsal and ventral processing streams during the processing of auditory spatial and pattern information, respectively. Additional gamma-band activity has been found over the frontal cortex during top-down tasks. Oscillatory activity in the gamma range may serve to assess the temporal dynamics of cortical networks and their interactions.