English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Complex Times for Earthquakes, Stocks, and the Brain's Activity

Kayser, C., & Ermentrout, B. (2010). Complex Times for Earthquakes, Stocks, and the Brain's Activity. Neuron, 66(3), 329-331. doi:10.1016/j.neuron.2010.04.039.

Item is

Files

show Files

Locators

show
hide
Description:
-
OA-Status:

Creators

show
hide
 Creators:
Kayser, C1, 2, 3, Author           
Ermentrout, B, Author
Affiliations:
1Research Group Physiology of Sensory Integration, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497808              
2Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
3Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

Content

show
hide
Free keywords: -
 Abstract: Scale-free dynamics, with a power spectrum
following P alpha f -beta, are an intrinsic feature of many
complex processes in nature. In neural systems,
scale-free activity is often neglected in electrophysiological
research. Here, we investigate scale-free
dynamics in human brain and show that it contains
extensive nested frequencies, with the phase of lower
frequencies modulating the amplitude of higher
frequencies in an upward progression across the
frequency spectrum. The functional significance of
scale-free brain activity is indicated by task performance
modulation and regional variation, with
beta being larger in default network and visual cortex
and smaller in hippocampus and cerebellum. The
precise patterns of nested frequencies in the brain
differ from other scale-free dynamics in nature, such
as earth seismic waves and stock market fluctuations,
suggesting system-specific generative mechanisms.
Our findings reveal robust temporal structures
and behavioral significance of scale-free brain
activity and should motivate future study on its physiological
mechanisms and cognitive implications.

Details

show
hide
Language(s):
 Dates: 2010-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.neuron.2010.04.039
BibTex Citekey: 6596
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Neuron
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Cambridge, Mass. : Cell Press
Pages: - Volume / Issue: 66 (3) Sequence Number: - Start / End Page: 329 - 331 Identifier: ISSN: 0896-6273
CoNE: https://pure.mpg.de/cone/journals/resource/954925560565