Complex Modulation Method for Measuring Cross-Frequency Coupling of Neural Oscillations
| Autor: | Piotr J. Franaszczuk, Magdalena Zieleniewska, Urszula Malinowska, Dana Boatman-Reich |
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| Rok vydání: | 2018 |
| Předmět: |
Neurons
Coupling Physics Quantitative Biology::Neurons and Cognition medicine.diagnostic_test 05 social sciences 050105 experimental psychology Radio spectrum Power (physics) 03 medical and health sciences Cognition 0302 clinical medicine Modulation medicine Humans Coherence (signal processing) Demodulation 0501 psychology and cognitive sciences Electrocorticography Biological system Frequency modulation 030217 neurology & neurosurgery |
| Zdroj: | EMBC |
| DOI: | 10.1109/embc.2018.8512189 |
| Popis: | There is growing evidence from human intracranial electrocorticography (ECoG) studies that interactions between cortical frequencies are important for sensory perception, cognition and inter-regional neuronal communication. Recent studies have focused mainly on the strength of phase-amplitude coupling in cross-frequency interactions. Here, we introduce a complex modulation method based on measures of coherence to investigate cross-frequency coupling in the neural time series. This novel approach uses complex demodulation transform and coherence measures from the transformed signals. We used this method to quantify power coupling between two cortical frequency bands: theta (47 Hz) and high gamma (70-150 Hz) in ECoG signals recorded during an auditory task. We compared complex modulation results with traditional phase-amplitude coupling measures (PAC) derived from the same ECoG dataset. Our results suggest that cross-frequency coupling may involve changes in both phase-amplitude and power relationships between frequencies, reflecting the complexity of neuronal oscillatory interactions. |
| Databáze: | OpenAIRE |
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