Each participant performed at least 105 trials, and the total recording time was ∼11 min. All recordings were conducted in a one layer magnetically shielded room (MSR) with active shielding engaged.
Observation time of walrus recordings number 1 12 in seconds per recording, percentage of total recording time and number of bottom sequences.
Sleep continuity was measured by calculating sleep maintenance defined as the ratio of total time spent asleep divided by the total recording period between sleep onset and offset.
Interestingly, the amount of REM sleep in the ferret was considerably higher (24.01 ± 1.61% of total recording time) than typically reported in placental mammals.
Individual segments lasted 2.4 269 s (median: 14.5 s), most (89%) occurred during slow-wave sleep (SWS), and they collectively occupied 0.3 6.1% of the total recording time.
(Archos rates the battery at 12 hours of playback time). You can even change the recording quality, for a total of 300, 600, or 750 hours of total recording time on the hard drive.
Total recording time, summing all trials per study, ranged from 30 to 90 s (50.84 ± 23.87).
The total recording is known as the FRT as shown in Fig. 4.
Activity counts were recorded for 1-min intervals, and data were analyzed for the total recording time of 24 h.
For the silence, noise, speaker's pauses, or music, they are labeled as no-speech, which represents 7% of the total recording.
This might be explained by the fact that high airway pressure could have occurred during only a short period of the total recording time and the relatively small number of included patients.
