Document Detail


BOSC: A better oscillation detection method, extracts both sustained and transient rhythms from rat hippocampal recordings.
MedLine Citation:
PMID:  21997899     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Neuronal population oscillations at a variety of frequencies can be readily seen in electroencephalographic (EEG) as well as local field potential recordings in many different species. Although these brain rhythms have been studied for many years, the methods for identifying discrete oscillatory epochs are still widely variable across studies. The "better oscillation detection" (BOSC) method applies standardized criteria to detect runs of "true" oscillatory activity and rejects transient events that do not reflect actual rhythms. It does so by estimating the background spectrum of the actual signal to derive detection criteria that include both power and duration thresholds. This method has not yet been applied to nonhuman data. Here, we test the BOSC method on two important rat hippocampal oscillatory signals, the theta rhythm and slow oscillation (SO), two large amplitude and mutually exclusive states. The BOSC method detected both the relatively sustained theta rhythm and the relatively transient SO apparent under urethane anesthesia and was relatively resilient to spectral features that changed across states, complementing previous findings for human EEG. Detection of oscillatory activity using the BOSC method (but not more traditional Fourier transform-based power analysis) corresponded well with human expert ratings. Moreover, for near-continuous theta, BOSC proved useful for detecting discrete disruptions that were associated with sudden and large amplitude phase shifts of the ongoing rhythm. Thus, the BOSC method accurately extracts oscillatory and nonoscillatory episodes from field potential recordings and produces systematic, objective, and consistent results-not only across frequencies, brain regions, tasks, and waking states, as shown previously, but also across species and for both sustained and transient rhythms. Thus, the BOSC method will facilitate more direct comparisons of oscillatory brain activity across all types of experimental paradigms. © 2011 Wiley-Liss, Inc.
Authors:
Adam M Hughes; Tara A Whitten; Jeremy B Caplan; Clayton T Dickson
Related Documents :
6615179 - Electromyography reliability in maximal and submaximal isometric contractions.
21624349 - Light responsiveness of clock genes, per1 and per2, in the olfactory bulb of mice.
25485529 - Oligoclonal free light chains in cerebrospinal fluid as markers of intrathecal inflamma...
512949 - Ballistic flexion movements of the human thumb.
17946149 - The influence of activation time on contraction force of myocardial tissue: a simulatio...
12009119 - Short term and long term effects of enhanced auditory feedback on typing force, emg, an...
22781269 - Thermal-light-based ranging using second-order coherence.
25165969 - Onset of sliding in amorphous films triggered by high-frequency oscillatory shear.
8022599 - Resolving power of the human visual system to monochromatic stimuli.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-13
Journal Detail:
Title:  Hippocampus     Volume:  -     ISSN:  1098-1063     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9108167     Medline TA:  Hippocampus     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Wiley-Liss, Inc.
Affiliation:
Department of Psychology, University of Alberta, Edmonton, Alberta, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Limitations of current definitions of miscarriage using mean gestational sac diameter and crown-rump...
Next Document:  (Pro)renin receptor: another member of the system controlled by angiotensin II?