File:Characterization-of-K-Complexes-and-Slow-Wave-Activity-in-a-Neural-Mass-Model-pcbi.1003923.s005.ogv
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this JPG preview of this OGG file: 800 × 450 pixels. Other resolutions: 320 × 180 pixels | 640 × 360 pixels | 1,024 × 576 pixels | 1,280 × 720 pixels | 1,920 × 1,080 pixels.
Original file (Ogg Theora video file, length 37 s, 1,920 × 1,080 pixels, 695 kbps, file size: 3.06 MB)
File information
Structured data
Captions
Summary[edit]
DescriptionCharacterization-of-K-Complexes-and-Slow-Wave-Activity-in-a-Neural-Mass-Model-pcbi.1003923.s005.ogv |
English: Visualization of the sleep-wake transition. This video illustrates the change of the evoked response to perturbations, as the model follows the proposed sleep-wake transition depicted in Figure 2. Close to the “wake” state, the system immediately returns to the stable fixed point, without any oscillatory behavior. At the onset of sleep, KNa and σe increase and the system approaches the Hopf bifurcation, such that perturbations away from the active state lead to transient, small and slow oscillatory responses. However, as there are no large deflections, which resemble KCs this regime corresponds to sleep stage N1. Close to label “N2” in Figure 2, KCs emerge as isolated events through a canard explosion (Sleep stage N2). With further transition into deeper sleep, the amplitude of the background oscillations increases and approaches the relaxation cycle of the canard. Finally in the proximity of “N3” in Figure 2 there are no KCs in the sense of isolated events, but large amplitude slow oscillations around a stable focus (Sleep stage N3). |
||
Date | |||
Source | Video S1 from Weigenand A, Schellenberger Costa M, Ngo H, Claussen J, Martinetz T (2014). "Characterization of K-Complexes and Slow Wave Activity in a Neural Mass Model". PLOS Computational Biology. DOI:10.1371/journal.pcbi.1003923. PMID 25392991. PMC: 4230734. | ||
Author | Weigenand A, Schellenberger Costa M, Ngo H, Claussen J, Martinetz T | ||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution 4.0 International license.
|
||
Provenance InfoField |
|
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 10:21, 20 November 2014 | 37 s, 1,920 × 1,080 (3.06 MB) | Open Access Media Importer Bot (talk | contribs) | Automatically uploaded media file from Open Access source. Please report problems or suggestions here. |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Transcode status
Update transcode statusFile usage on other wikis
The following other wikis use this file:
- Usage on outreach.wikimedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Author | Weigenand A, Schellenberger Costa M, Ngo H, Claussen J, Martinetz T |
---|---|
Usage terms | http://creativecommons.org/licenses/by/4.0/ |
Image title | Visualization of the sleep-wake transition. This video illustrates the change of the evoked response to perturbations, as the model follows the proposed sleep-wake transition depicted in Figure 2. Close to the “wake” state, the system immediately returns to the stable fixed point, without any oscillatory behavior. At the onset of sleep, KNa and σe increase and the system approaches the Hopf bifurcation, such that perturbations away from the active state lead to transient, small and slow oscillatory responses. However, as there are no large deflections, which resemble KCs this regime corresponds to sleep stage N1. Close to label “N2” in Figure 2, KCs emerge as isolated events through a canard explosion (Sleep stage N2). With further transition into deeper sleep, the amplitude of the background oscillations increases and approaches the relaxation cycle of the canard. Finally in the proximity of “N3” in Figure 2 there are no KCs in the sense of isolated events, but large amplitude slow oscillations around a stable focus (Sleep stage N3). |
Software used | Xiph.Org libtheora 1.1 20090822 (Thusnelda) |
Date and time of digitizing | 2014-11 |