Format

Send to

Choose Destination
Brain Res. 2015 Sep 24;1621:309-15. doi: 10.1016/j.brainres.2015.01.005. Epub 2015 Jan 12.

Do slow and fast gamma rhythms correspond to distinct functional states in the hippocampal network?

Author information

1
Center for Learning and Memory, Department of Neuroscience, The University of Texas at Austin, 1 University Station Stop C7000, Austin, TX 78712, USA. Electronic address: colgin@mail.clm.utexas.edu.

Abstract

For decades, hippocampal gamma was thought to be a single type of rhythm with a continuously varying frequency. However, an increasing body of evidence supports a new hypothesis regarding hippocampal gamma. The patterns traditionally defined as hippocampal gamma may actually comprise separate gamma subtypes with distinct frequencies and unique functions. The present review discusses the evidence for and against this new viewpoint. This review will also point out key questions that remain to be answered to validate the two-gamma hypothesis. This article is part of a Special Issue entitled SI: Brain and Memory.

KEYWORDS:

Entorhinal cortex; Gamma; Hippocampus; Oscillations; Rhythms

PMID:
25591484
PMCID:
PMC4499490
DOI:
10.1016/j.brainres.2015.01.005
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center