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A new look at gamma? High- (>60 Hz) γ-band activity in cortical networks: Function, mechanisms and impairment

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Check out this Knowledge Base article from StressTherapy Solutions: A new look at gamma? High- (>60 Hz) γ-band activity in cortical networks: Function, mechanisms and impairment.

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Study at a glance

Area
QEEG, Methods & Mechanisms
Study type
Review & meta-analysis
Authors
Uhlhaas PJ, Pipa G, Neuenschwander S, Wibral M, Singer W
Journal
Progress in Biophysics and Molecular Biology
Year
2011
Protocol
review of EEG, MEG and local field potential studies

Key findings

  • Oscillations above 60 Hz appear consistently across EEG, MEG and local field potential recordings
  • Modulation of 60-200 Hz activity correlates with specific cognitive functions
  • Authors propose that high gamma activity is impaired in schizophrenia and epilepsy
  • Reviews the physiological mechanisms behind high gamma and contrasts low versus high gamma activity patterns

DOI 10.1016/j.pbiomolbio.2010.10.004 → PubMed 21034768 →

A review of high-frequency gamma oscillations above 60 Hz, as recorded with EEG, magnetoencephalography (MEG) and local field potentials. The authors gather evidence that activity in the 60-200 Hz range is tied to specific cognitive functions and argue that it is disrupted in neuropsychiatric conditions such as schizophrenia and epilepsy. They also review how these fast rhythms are generated in cortical circuits and contrast the roles of low and high gamma activity.