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Brain Rhythms 

Brain Rhythms
Brain Rhythms

Riitta Hari

, and Aina Puce

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date: 06 March 2021

This chapter provides examples of studies of MEG and EEG brain rhythms that have considerably increased understanding of the human brain’s sensory, motor, cognitive, and affective functions. Parieto-occipital alpha, Rolandic mu and auditory-cortex tau rhythms, as well as more widely spread beta, theta, gamma, delta and ultra-slow oscillations are described. Additionally, MEG/EEG signal changes that accompany different vigilance states, such as drowsiness and sleep, as well as anesthesia, are discussed. We emphasize the importance of timing information that MEG and EEG recordings, including the brain rhythms, provide. In this and subsequent chapters, we rely somewhat on our own studies and experiences, so as to give educational insights from the pitfalls and challenges we ourselves have experienced.

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