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1.
Figure 6

Figure 6. From: Effect of Five-Consecutive-Day Exposure to an Anxiogenic Stressor on Sleep-Wake Activity in Rats.

Progressive effects of repetitive anxiogenic stressor (AS) exposure on (A) slow-wave sleep latency, (B) REM sleep latency, and (C) total number of REM sleep episodes. Abbreviations: BLD, no exposure to AS baseline day; ASD-1, day 1 of AS exposure; ASD-3, day 3 of AS exposure; ASD-4, day 4 of AS exposure; ASD-5, day 5 of AS exposure; NASD, no exposure to AS day. *Represents a significant difference from BLD: *p < 0.05, **p < 0.01, ***p < 0.001. Δ represents a significant difference from ASD-1: Δp < 0.05, ΔΔp < 0.01, ΔΔΔp < 0.001.

Matthew W. O’Malley, et al. Front Neurol. 2013;4:15.
2.
Figure 2

Figure 2. From: Effect of Five-Consecutive-Day Exposure to an Anxiogenic Stressor on Sleep-Wake Activity in Rats.

Progressive effects of repetitive anxiogenic stressor (AS) exposure on the percentages (mean ± SEM) of time spent in wakefulness for each hour of the 6 h sleep-wake recording period immediately following experimental treatment. The treatments, listed chronologically: no exposure to AS baseline day (BLD), day 1 of AS exposure (ASD-1), day 3 of AS exposure (ASD-3), day 4 of AS exposure (ASD-4), day 5 of AS exposure (ASD-5), and no exposure to AS day (NASD). *Represents a significant difference from BLD: *p < 0.05, **p < 0.01, ***p < 0.001. Δ represents a significant difference from ASD-1: Δp < 0.05, ΔΔp < 0.01, ΔΔΔp < 0.001.

Matthew W. O’Malley, et al. Front Neurol. 2013;4:15.
3.
Figure 5

Figure 5. From: Effect of Five-Consecutive-Day Exposure to an Anxiogenic Stressor on Sleep-Wake Activity in Rats.

Progressive effects of repetitive anxiogenic stressor (AS) exposure on the percentages (mean ± SEM) of time spent in REM sleep for each hour of the 6 h sleep-wake recording period immediately following experimental treatment. The treatments, listed chronologically: no exposure to AS baseline day (BLD), day 1 of AS exposure (ASD-1), day 3 of AS exposure (ASD-3), day 4 of AS exposure (ASD-4), day 5 of AS exposure (ASD-5), and no exposure to AS day (NASD). *Represents a significant difference from BLD: *p < 0.05, **p < 0.01, ***p < 0.001. Δ represents a significant difference from ASD-1: Δp < 0.05, ΔΔp < 0.01, ΔΔΔp < 0.001.

Matthew W. O’Malley, et al. Front Neurol. 2013;4:15.
4.
Figure 3

Figure 3. From: Effect of Five-Consecutive-Day Exposure to an Anxiogenic Stressor on Sleep-Wake Activity in Rats.

Progressive effects of repetitive anxiogenic stressor (AS) exposure on the percentages (mean ± SEM) of time spent in slow-wave sleep for each hour of the 6 h sleep-wake recording period immediately following experimental treatment. The treatments, listed chronologically: no exposure to AS baseline day (BLD), day 1 of AS exposure (ASD-1), day 3 of AS exposure (ASD-3), day 4 of AS exposure (ASD-4), day 5 of AS exposure (ASD-5), and no exposure to AS day (NASD). *Represents a significant difference from BLD: *p < 0.05, **p < 0.01, ***p < 0.001. Δ represents a significant difference from ASD-1: Δp < 0.05, ΔΔp < 0.01, ΔΔΔp < 0.001.

Matthew W. O’Malley, et al. Front Neurol. 2013;4:15.
5.
Figure 4

Figure 4. From: Effect of Five-Consecutive-Day Exposure to an Anxiogenic Stressor on Sleep-Wake Activity in Rats.

Progressive effects of repetitive anxiogenic stressor (AS) exposure on the percentages (mean ± SEM) of time spent in transitional sleep between slow-wave sleep and REM sleep for each hour of the 6 h sleep-wake recording period immediately following experimental treatment. The treatments, listed chronologically: no exposure to AS baseline day (BLD), day 1 of AS exposure (ASD-1), day 3 of AS exposure (ASD-3), day 4 of AS exposure (ASD-4), day 5 of AS exposure (ASD-5), and no exposure to AS day (NASD). *Represents a significant difference from BLD: *p < 0.05, **p < 0.01, ***p < 0.001. Δ represents a significant difference from ASD-1: Δp < 0.05, ΔΔp < 0.01, ΔΔΔp < 0.001.

Matthew W. O’Malley, et al. Front Neurol. 2013;4:15.
6.
Figure 1

Figure 1. From: Effect of Five-Consecutive-Day Exposure to an Anxiogenic Stressor on Sleep-Wake Activity in Rats.

Progression of sleep-wake architecture that occurred over the course of the six experimental test days, listed chronologically: no exposure to anxiogenic stressor (AS) baseline day (BLD), day 1 of AS exposure (ASD-1), day 3 of AS exposure (ASD-3), day 4 of AS exposure (ASD-4), day 5 of AS exposure (ASD-5), and no exposure to AS day (NASD). Each of the six hypnograms is an example of the sleep-wake architecture expressed by rats during the 6 h sleep-wake recording period that immediately followed that experimental treatment. These continuous step hypnograms plot occurrence and duration of polygraphically and behaviorally defined wakefulness (W), slow-wave sleep (SWS), transitional sleep between SWS and REM sleep (tS-R), and REM sleep.

Matthew W. O’Malley, et al. Front Neurol. 2013;4:15.

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