Continuous exposure to dim illumination uncouples temporal patterns of sleep, body temperature, locomotion and drinking behavior in the rat
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Cited by (51)
Light-dependent effects on mood: Mechanistic insights from animal models
2022, Progress in Brain ResearchCitation Excerpt :For instance, rodents exposed to constant light conditions exhibit arrhythmic circadian rhythms in locomotor activity, lengthened period, or a split locomotor activity rhythm (Eastman and Rechtschaffen, 1983; Ikeda et al., 2000; Ohta et al., 2005). This leads to disruption of circadian rhythms in hormone release, locomotion, and temperature and causes altered REM sleep (Eastman and Rechtschaffen, 1983; Ikeda et al., 2000). Constant light also increases anxiety- and depression-related behaviors while decreasing glucocorticoid levels (Fonken et al., 2009) suggesting that the effects of constant light on mood-related behaviors may not simply be a stress response.
Aerobic training associated with an active lifestyle exerts a protective effect against oxidative damage in hypothalamus and liver: The involvement of energy metabolism
2021, Brain Research BulletinCitation Excerpt :Mice housed in LC exhibited higher SPA than SC groups, as detected by the effect of housing (F = 592.05; p < 0.001; LC > SC). A time-of-day variation of SPA showing a pattern of peaks and troughs throughout the day is in agreement with the literature (Ikeda et al., 2000), but we found a significant interaction between housing space and time-of-day on SPA data (F = 11.30; p < 0.001), leading us to propose that time-of-day variation of SPA does not exactly match between SC and LC groups. In a similar way, we found a significant interaction between training and time-of-day on SPA data (F = 18.85; p < 0.001).
Circadian insights into the biology of depression: Symptoms, treatments and animal models
2019, Behavioural Brain ResearchCitation Excerpt :In mice, constant light exposure (LL) increases depressive-like behavior (e.g., despair behavior and anhedonia) [92] (Fig. 2A–D). Moreover, LL conditions induce the disruption of circadian rhythms of locomotion, temperature and hormonal release, and an increase of non-REM sleep during the rest phase, and REM sleep during the active phase [93,94]. The effects of LL in circadian rhythms are progressive.
Chronic constant light-induced hippocampal late-phase long-term potentiation impairment in vitro is attenuated by antagonist of D1/D5 receptors
2015, Brain ResearchCitation Excerpt :Shift work or light at night may cause sleep disorder in human (Schwartz and Roth, 2006). Studies on animals showed that sleep rhythm was abolished by constant light exposure (Eastman and Rechtschaffen, 1983; Ikeda et al., 2000) or circadian gene mutation (Naylor et al., 2000). Sleep perturbation has detrimental effect on hippocampus-dependent long-term memory and L-LTP.