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1 brain regions exhibit multiscale cycles with ultradian (~1.5-1.7 h), circadian (~21.6-26.4 h), and in
2 this current study demonstrate circadian and ultradian (12 h) variations in skin blood flow.
3  study of rapidly-changing phenomena such as ultradian (2-3 hour) rhythmicity in whole blood samples
4                                              Ultradian (~4 hr) rhythms in locomotor activity that do
5  dopamine levels fluctuate in synchrony with ultradian activity cycles and that dopaminergic tone str
6                                        These ultradian activity patterns also drove an ultradian feed
7 uitary-adrenal peripheral network to produce ultradian adrenocorticotrophic hormone and glucocorticoi
8 ticotropin levels and elevated corticotropin ultradian amplitude.
9 d effects, specifically on decline rates and ultradian amplitude.
10                                          The ultradian and circadian period cycles are driven by slee
11  We observe that impedance oscillations with ultradian and circadian periodicities are associated wit
12 es - minutes to hours for hormone secretion, ultradian and diurnal rhythms, and weeks for changes in
13 ated transcription sites (TSs) under pulsed (ultradian) and constant hormone stimulation.
14 Drosophila melanogaster, claiming that these ultradian approximately 60-s cycles in the interpulse in
15 ice daily entrainment of phase and period of ultradian behavioral rhythms associated with phase adjus
16 differences were detected, animals presented ultradian behavioral rhythms of 12, 8, 6, 4.8, 4 h and/o
17                                Circadian and ultradian characteristics of rest-activity patterns were
18 e SCN; in these two areas both circadian and ultradian components were always in-phase.
19 thms associated with phase adjustment of the ultradian cycle around the light-dark and dark-light tra
20 ositions as budding yeast transit through an ultradian cycle in which expression of >50% of all genes
21 vement sleep [NREM] and REM sleep) within an ultradian cycle.
22                                              Ultradian cycles had a circadian dependence and were mos
23     Responses also changed due to endogenous ultradian cycles.
24 ania were characterized by psychosis, daily (ultradian) cycling, and long duration (55.2 and 40.0 wee
25             In between were three days in an ultradian dim light (< 150 lux)-dark cycle (LD 2.5 : 1.5
26 ity rhythm fragmentation and attenuation and ultradian disorganization was associated with Glasgow Co
27 e that ECTO-NOX proteins are the biochemical ultradian drivers of the cellular biological clock.
28                 Two clusters with dissimilar ultradian dynamics, one lipid-enriched (period = 3.4 h)
29 harmacokinetics drug absorption model and an ultradian endocrine model for glucose-insulin interactio
30            For the first time, we now report ultradian expression of >900 genes in vitro Sixty genes
31 se ultradian activity patterns also drove an ultradian feeding pattern.
32  Circulating 24-h ghrelin showed significant ultradian fluctuations and an orderly pattern of release
33                                          The ultradian fluctuations in leptin levels showed pattern s
34 truct initiates and sustains the appropriate ultradian frequency essential for reproduction.
35 ral hormone oscillator with a characteristic ultradian frequency.
36 , non-spectral-analysis method of separating ultradian from circadian components and applied it to a
37  using this control by confirming 175 of 323 ultradian genes identified in a prior study and found 86
38 ed in a prior study and found 862 additional ultradian genes.
39 cate that SST is required to masculinize the ultradian GH rhythm by suppressing interpulse GH levels.
40 amic activity is not required for generating ultradian glucocorticoid oscillations.
41  Accumulation of Prochlorococcus produced by ultradian growth was restricted by high loss rates.
42 s are further present between non-circadian (ultradian) HFA and glucose levels which are higher durin
43             Metabolic rhythms include rapid, ultradian (hourly) dynamics, but it remains unclear what
44 pect that one of the possibly many causes of ultradian insulin secretion oscillations is the time del
45    In the glucose-insulin regulatory system, ultradian insulin secretory oscillations are observed to
46 ndocrine metabolic regulatory system and the ultradian insulin secretory oscillations for the cases o
47  and after 3 days of free-running through an ultradian light-dark cycle (2.5 h wake in dim light, 1.5
48 ine transporter gene lengthens the period of ultradian locomotor rhythms in mice.
49 ifically in the area of circadian (24 h) and ultradian (&lt;24 h) variability.
50 that brain cooling activity oscillates in an ultradian manner during sleep in humans and is reduced d
51 th the cell cycle but unrelated to the yeast ultradian metabolic cycle.
52 rt identification of a temperature-dependent ultradian metabolic rhythm that controls the alternating
53                                        These ultradian metabolite rhythms co-expressed with diurnal 2
54 38 hours) to delineate circadian (daily) and ultradian (minute to hourly) rhythms in different brain
55                            The corresponding ultradian modulation was also observed in the transcript
56 e investigate whether recurrence patterns of ultradian NREM/REM sleep cycles (USC) predict mortality
57  correlation was not dependent on circadian, ultradian or meal-triggered fluctuations, could be mimic
58        A short-period autonomous respiratory ultradian oscillation (period approximately 40 min) occu
59 are characterized by an approximately 90-min ultradian oscillation between rapid eye movement (REM) a
60 rm of CREB (hyper-PO4 CREB) and triggers its ultradian oscillation, both of which are linked to LTM f
61 oposed during the last decade to model these ultradian oscillations as well as the metabolic system p
62          While feeding rhythms, circadian or ultradian oscillations in activity are unchanged, mutant
63 on, the model accounts for the occurrence of ultradian oscillations in an isolated pituitary gland.
64 thy controls, and tested the hypothesis that ultradian oscillations in facial skin temperatures exist
65 rom local dopaminergic tone, which generates ultradian oscillations in the model independent of circa
66                    Here, we showed that fast ultradian oscillations of the ligand Dll1 and the transc
67 ate that an arousal regulating, dopaminergic ultradian oscillator (DUO) operates in the mammalian bra
68 icity in vitro and a lack of known molecular ultradian oscillators.
69  model of sleep dynamics does not include an ultradian pacemaker, nor does it invoke a hypothetical h
70     A wearable microdialysis device measures ultradian patterns of adrenal hormone secretion in human
71 -negative Clock-Delta19 gene disrupts normal ultradian patterns of GnRH secretion, significantly decr
72 nsive hormone characterised by circadian and ultradian patterns of secretion) data and sleep-staged E
73                                 In contrast, ultradian period and phase emerged as remarkably stable
74     In contrast to the circadian clock, this ultradian period is strongly temperature-dependent: 17 h
75 and that dopaminergic tone strongly predicts ultradian period.
76         Administration of DRIs lengthens the ultradian periodicity.
77 use the HPA axis has prominent circadian and ultradian periodicity.
78 ormones are secreted with both circadian and ultradian periods, conventional single-time point measur
79                                              Ultradian pulsatility of both adrenocorticotropic hormon
80 ordinated with both spontaneous behavior and ultradian pulses of corticosteroid secretion.
81 costerone (CORT) reaches the brain in hourly ultradian pulses, with a steep rise in amplitude before
82  of CORT one hour after the first--mimicking ultradian pulses--completely normalizes all aspects of g
83 n, preponderance of mania, and high rates of ultradian rapid cycling and comorbid attention-deficit/h
84 rovides a flexible framework to describe the ultradian regulation of REM sleep in health and disease.
85 -fitting program, to determine circadian and ultradian regulatory dynamics.
86 ith concomitant disturbance of circadian and ultradian rest-activity rhythms and loss of phase cohere
87 revealed a consistent pattern of DBT and HRV ultradian rhythm (2-5 h) power that uniquely enabled ant
88 emperature or sleep was replaced by a strong ultradian rhythm (period approximately 3 hr).
89 ell as the challenges related to identifying ultradian rhythm and addressing their molecular underpin
90 netic analysis of heartbeat in humans and an ultradian rhythm controlling defecation in Caenorhabditi
91 e not previously been identified as possible ultradian rhythm generators.
92 pate the LH surge, suggesting that automated ultradian rhythm monitoring may provide a novel and conv
93      Thus, while CRH(PVN) neurons display an ultradian rhythm of activity over the 24-h day that is c
94 mice and rats, CRH(PVN) neurons displayed an ultradian rhythm of activity with reoccurring upstates o
95 dampen the amplitude of the YRO, which is an ultradian rhythm of cell metabolism and transcription.
96 ablishes a cell-autonomous mammalian 12-hour ultradian rhythm of nuclear speckle liquid-liquid phase
97  a parsimonious explanation for the observed ultradian rhythm of REM/NREM sleep.
98 equency in cardiovascular rhythms, a shorter ultradian rhythm remains.
99                            A complex dynamic ultradian rhythm underlies the hypothalamic-pituitary-ad
100 ed phosphatidylcholines) expressed an 11.9 h ultradian rhythm without co-expressed diurnal rhythmicit
101 wave activity (SWA) fluctuated with a 29-min ultradian rhythm, indicating a tendency to move systemat
102                In addition, the timing of an ultradian rhythm, the defecation cycle, is lengthened co
103                   Unlike other models of the ultradian rhythm, this model of sleep dynamics does not
104  rhythm, but also in an approximately hourly ultradian rhythm.
105              In C. elegans, defecation is an ultradian rhythmic behavior: every approximately 50 s a
106 sic origin because of a perceived absence of ultradian rhythmicity in vitro and a lack of known molec
107 lamic arcuate nucleus independently generate ultradian rhythms (URs) in hormone secretion and behavio
108 thmicity, would compromize the generation of ultradian rhythms (URs) of locomotor activity.
109 etabolic pulses are synchronized into stable ultradian rhythms across contacting cells in culture by
110 e in strong support of instrinsically driven ultradian rhythms and expose potential molecular mechani
111 e in strong support of instrinsically driven ultradian rhythms and expose potential molecular mechani
112                           Twelve-hour (12 h) ultradian rhythms are a well-known phenomenon in coastal
113        We show that functional circadian and ultradian rhythms are diminished in pathological tissue,
114                   Using the model, realistic ultradian rhythms are generated by arousal state feedbac
115                                  In animals, ultradian rhythms are important in many neuromuscular sy
116                   These findings reveal that ultradian rhythms are integral to biological timing of m
117                                Circadian and ultradian rhythms are maintained during treatment with h
118                                              Ultradian rhythms are thought to have an extrinsic origi
119 me series enabled simultaneous evaluation of ultradian rhythms as well as fractal organization accord
120 ue via two sutures showed the development of ultradian rhythms at approximately 5 weeks before the vi
121 sting behavioral rhythms, with circadian and ultradian rhythms at the center of the emergent pattern
122   Worms exhibit social behaviors and complex ultradian rhythms driven by Ca(2+) oscillators with cloc
123  liver function, the research on the hepatic ultradian rhythms have largely been lagging behind.
124                                    Unmasking ultradian rhythms in gene expression.
125 vely, our results identify clock-independent ultradian rhythms in lipid metabolism that are essential
126 eport the discovery of temperature-sensitive ultradian rhythms in mammalian fibroblasts that are inde
127                                              Ultradian rhythms in metabolism and physiology have been
128 role meal timing plays in coordinating these ultradian rhythms in metabolism.
129                                              Ultradian rhythms in mouse hepatocytes in vivo have been
130                 In addition to circadian and ultradian rhythms of MUA, neural activity both within an
131 to circadian rhythms, there were significant ultradian rhythms present; one, with a period of approxi
132                              Moreover, these ultradian rhythms require extracellular glutamine, sever
133                                          The ultradian rhythms showed correlations with variations in
134 olecular mechanisms and functions underlying ultradian rhythms that remain unknown.
135 olecular mechanisms and functions underlying ultradian rhythms that remain unknown.-Van der Veen, D.
136            Here, we characterized widespread ultradian rhythms under ad libitum feeding conditions in
137 ual isolation, synchronization between these ultradian rhythms was observed.
138                         The periods of these ultradian rhythms were not significantly different in wi
139                    Finally, we also refer to ultradian rhythms with other frequencies and examine the
140 rs of metabolites that exhibited significant ultradian rhythms with periods different from the feedin
141                      Metabolic oscillations (ultradian rhythms) in yeast are known to modulate single
142 nes across the menstrual cycle, particularly ultradian rhythms, are well described, monitoring these
143 s the temporal organization of circadian and ultradian rhythms, crucial for understanding biological
144 mined biorhythm-based metrics (circadian and ultradian rhythms, derived from the daily activity and h
145                           The system detects ultradian rhythms, disruption of the circadian cycle, an
146 he gold standard animal model for behavioral ultradian rhythms, naturally expressing ~2-h foraging rh
147            Faster biological rhythms, called ultradian rhythms, vary widely in periodicity and are li
148 ght on the presence and functions of hepatic ultradian rhythms.
149 ter details the recent literature related to ultradian rhythms.
150 r time scales and coexists with synchronized ultradian rhythms.
151 hormone system with endogenous circadian and ultradian rhythms.
152 eostatic process that exists purely to drive ultradian rhythms.
153 extended nonoscillating periods and possible ultradian rhythms.
154  a published gene expression dataset with an ultradian sampling resolution.
155 s in the temporal organization of HPA on the ultradian scale: on the minute's scale, passive periods
156  hypercortisolemia and increased activity in ultradian secretory episodes, but HPA axis alterations i
157  cortisol secretion and greater amplitude of ultradian secretory episodes.
158 t patterns are exposed that directly reflect ultradian sleep cycles and replicate the dynamics of lab
159 ly to result in matching data points-such as ultradian sleep cycles.
160 cillatory activity recorded from STN between ultradian sleep states to determine whether sleep-stage
161                    Participants underwent an ultradian sleep-wake cycle (USW) procedure consisting of
162 ological steroid levels are often pulsatile (ultradian), the genomic effects of this pulsatility are
163 ine if ECTO-NOX proteins might represent the ultradian time keepers (pacemakers) of the biological cl
164              Biological oscillations with an ultradian time scale of 1 to several hours include cycle
165 vity, exhibits cycling patterns ranging from ultradian to multidien rhythmicity, with seizures phase-
166 of >900 genes in vitro Sixty genes exhibited ultradian transcriptional rhythmicity, both in vivo and
167 ddition to cortisol, we identified daily and ultradian variation in free cortisone, corticosterone, 1

 
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