Spurious cross-frequency amplitude-amplitude coupling in nonstationary, nonlinear signals.
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ABSTRACT:
SUBMITTER: Yeh CH
PROVIDER: S-EPMC4834901 | biostudies-literature | 2016 Jul
REPOSITORIES: biostudies-literature
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Spurious cross-frequency amplitude-amplitude coupling in nonstationary, nonlinear signals.
Yeh Chien-Hung CH Lo Men-Tzung MT Hu Kun K
Physica A 20160701
Recent studies of brain activities show that cross-frequency coupling (CFC) play an important role in memory and learning. Many measures have been proposed to investigate the CFC phenomenon, including the correlation between the amplitude envelopes of two brain waves at different frequencies - cross-frequency amplitude-amplitude coupling (AAC). In this short communication, we describe how nonstationary, nonlinear oscillatory signals may produce spurious cross-frequency AAC. Utilizing the empiric ...[more]
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