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Nat Neurosci. 2015 Apr;18(4):484-9. doi: 10.1038/nn.3952. Epub 2015 Feb 23.

What does gamma coherence tell us about inter-regional neural communication?

Author information

1
1] The Neuroscience Institute, New York University, School of Medicine, New York, New York, USA. [2] Center for Neural Science, New York University, School of Medicine, New York, New York, USA.
2
The Neuroscience Institute, New York University, School of Medicine, New York, New York, USA.

Abstract

Neural oscillations have been measured and interpreted in multitudinous ways, with a variety of hypothesized functions in physiology, information processing and cognition. Much attention has been paid in recent years to gamma-band (30-100 Hz) oscillations and synchrony, with an increasing interest in 'high gamma' (>100 Hz) signals as mesoscopic measures of inter-regional communication. The biophysical origins of the measured variables are often difficult to precisely identify, however, making their interpretation fraught with pitfalls. Here we discuss how measurements of inter-regional gamma coherence can be prone to misinterpretation and suggest strategies for deciphering the roles that synchronized oscillations across brain networks may play in neural function.

PMID:
25706474
PMCID:
PMC4803441
DOI:
10.1038/nn.3952
[Indexed for MEDLINE]
Free PMC Article

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