Distinguishing rhythmic from non-rhythmic brain activity during rest in healthy neurocognitive aging
Identifieur interne : 001A98 ( Pmc/Corpus ); précédent : 001A97; suivant : 001A99Distinguishing rhythmic from non-rhythmic brain activity during rest in healthy neurocognitive aging
Auteurs : Jeremy B. Caplan ; Monica Bottomley ; Pardeep Kang ; Roger A. DixonSource :
- NeuroImage [ 1053-8119 ] ; 2015.
Abstract
Rhythmic brain activity at low frequencies (<12 Hz) during rest are thought to increase in neurodegenerative disease, but findings in healthy neurocognitive aging are mixed. Here we address two reasons conventional spectral analyses may have led to inconsistent results. First, spectral-power measures are compared to a baseline condition; when resting activity is the signal of interest, it is unclear what the baseline should be. Second, conventional methods do not clearly differentiate power due to rhythmic versus non-rhythmic activity. The Better OSCillation detection method (BOSC; [
Url:
DOI: 10.1016/j.neuroimage.2015.03.001
PubMed: 25769279
PubMed Central: 4408255
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