What is it about?

The alpha rhythm is the most prominent rhythm of human brain activity. Common thinking pictures brain oscillations as synusiods centered around zero. In our study, we show that alpha rhythms have asymetry in the amplitude around zero. Therefore, alpha oscillations should be associated with a non-zero mean.

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Why is it important?

Non-zero mean oscillations under certain circumstances generated evoked responses to visual, auditory, or somatosensory stimuli. It means that evoked responses should be studied together with oscillations.


In our next study, we analyse one of the most researched evoked responses, P300. P300 occurs after surprising stimuli from any modality. We suggest that P300 is generated by a non-zero mean alpha rhythm. This, in turn, opens up new interpretations of the role that P300 may play in the human brain.

Alina Studenova
Max-Planck-Gesellschaft zur Forderung der Wissenschaften

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This page is a summary of: Non-zero mean alpha oscillations revealed with computational model and empirical data, PLoS Computational Biology, July 2022, PLOS, DOI: 10.1371/journal.pcbi.1010272.
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