Jump to ContentJump to Main Navigation
Rhythms of the Brain$
Users without a subscription are not able to see the full content.

György Buzsáki

Print publication date: 2006

Print ISBN-13: 9780195301069

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780195301069.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2020. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 27 November 2020

A System of Rhythms: From Simple to Complex Dynamics

A System of Rhythms: From Simple to Complex Dynamics

(p.111) Cycle 5 A System of Rhythms: From Simple to Complex Dynamics
Rhythms of the Brain

Buzsáki György

Oxford University Press

Neuronal networks in the mammalian cortex generate several distinct oscillatory bands. These neuronal oscillators are linked to the much slower metabolic oscillators. The mean frequencies of the experimentally observed oscillator categories form a linear progression on a natural logarithmic scale with a constant ratio between neighboring frequencies. Because the ratios of the mean frequencies of the neighboring cortical oscillators are not integers, adjacent bands cannot linearly phase-lock. Oscillators of different bands couple with shifting phases and give rise to a state of perpetual fluctuation between unstable and transient stable phase synchrony. The resulting interference dynamics are a fundamental feature of the global temporal organization of the cerebral cortex. Although brain states are highly labile, neuronal avalanches are prevented by oscillatory dynamics. Scale-free dynamics generate complexity, whereas oscillations allow for temporal predictions. Dynamics in the cerebral cortex constantly alternate between the most complex metastable state and the highly predictable oscillatory state.

Keywords:   slow oscillations, circadian rhythms, interference, oscillator coupling, pink noise, power spectrum, Weber law, scale-free organization, metastability, 1/f dynamics

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .