REM Sleep - Test Page
... events might correspond to REM sleep twitches and which might be the cetacean equivalent of myoclonic jerks occurring in non-REM sleep is a difficult task. What is already clear is that very few such jerks occur, on the order of 10 to f 00 per day, compared with approximately 3000 in the rat. If the ...
... events might correspond to REM sleep twitches and which might be the cetacean equivalent of myoclonic jerks occurring in non-REM sleep is a difficult task. What is already clear is that very few such jerks occur, on the order of 10 to f 00 per day, compared with approximately 3000 in the rat. If the ...
A role for sleep in brain plasticity
... to the ability of the brain to persistently modify its structure and function according to genetic ...
... to the ability of the brain to persistently modify its structure and function according to genetic ...
Electrophysiological markers of Rapid Eye Movements in
... areas and reflect various cognitive processes including memory, decision-making, and attention allocation (Henderson 2003). Saccades are classically separated into two groups entailing different generators: (i) reflexive saccades (eye movements triggered externally by the sudden apparition of a new ...
... areas and reflect various cognitive processes including memory, decision-making, and attention allocation (Henderson 2003). Saccades are classically separated into two groups entailing different generators: (i) reflexive saccades (eye movements triggered externally by the sudden apparition of a new ...
sleep disturbances associated with neuropsychiatric disease
... The current understanding that sleep and wakefulness are both active brain states that are generated and maintained from within the brain has its origins in the pioneering work of Berger (1930), Economo (1929), Bremer (1935), Moruzzi and Magoun (1949), and Jouvet (1962). Prior to the work of these i ...
... The current understanding that sleep and wakefulness are both active brain states that are generated and maintained from within the brain has its origins in the pioneering work of Berger (1930), Economo (1929), Bremer (1935), Moruzzi and Magoun (1949), and Jouvet (1962). Prior to the work of these i ...
Mechanisms of Sleep Control - UCLA Integrative Center for
... The most caudal region implicated in NREM sleep control is the region of the nucleus of the solitary tract. Low-frequency stimulation of this structure can produce short-latency sleep onset (Magnes et al., 1961). Stimulation of the baroreceptor afferents to this area can also produce rapid sleep ons ...
... The most caudal region implicated in NREM sleep control is the region of the nucleus of the solitary tract. Low-frequency stimulation of this structure can produce short-latency sleep onset (Magnes et al., 1961). Stimulation of the baroreceptor afferents to this area can also produce rapid sleep ons ...
Why We Sleep: The Temporal Organization of
... increased sleep (sleep rebound) after sleep deprivation. During NREM sleep recovery, delta power decreases exponentially with time, tracking the dissipation of the behavioral sleep debt. REM sleep is also homeostatically regulated. has been proposed [1,19,23]: rapid reversibility (as opposed to hibe ...
... increased sleep (sleep rebound) after sleep deprivation. During NREM sleep recovery, delta power decreases exponentially with time, tracking the dissipation of the behavioral sleep debt. REM sleep is also homeostatically regulated. has been proposed [1,19,23]: rapid reversibility (as opposed to hibe ...
Mammalian Sleep
... neuronal activity of the midbrain and pontine regions responsible for REM sleep generation was studied in the turtle.20 This study found no evidence of cyclicity in neuronal activity during extended quiescent periods and hence no evidence of REM sleep. It would be extremely valuable to confirm these ...
... neuronal activity of the midbrain and pontine regions responsible for REM sleep generation was studied in the turtle.20 This study found no evidence of cyclicity in neuronal activity during extended quiescent periods and hence no evidence of REM sleep. It would be extremely valuable to confirm these ...
State transitions between wake and sleep, and within the
... the polysomnography and spindle-defined sleep onset that often involves an alternation between stage 1 ‘sleep’ and wake before the occurrence of the stage 1 episode that ends with sleep onset. This episode, often referred to as the sleep onset period, marks a period of gradual change operating at ev ...
... the polysomnography and spindle-defined sleep onset that often involves an alternation between stage 1 ‘sleep’ and wake before the occurrence of the stage 1 episode that ends with sleep onset. This episode, often referred to as the sleep onset period, marks a period of gradual change operating at ev ...
A Critical Period of Sleep for Development of Courtship Circuitry and
... >80% of mature flies (Fig. 1C). This finding was not specific to the iso31 background or the time of the light pulse in the night (fig. S1, D and E). The reduced arousal did not reflect an inability of young flies to respond to light, because young and mature flies were similarly aroused by a strong ...
... >80% of mature flies (Fig. 1C). This finding was not specific to the iso31 background or the time of the light pulse in the night (fig. S1, D and E). The reduced arousal did not reflect an inability of young flies to respond to light, because young and mature flies were similarly aroused by a strong ...
Sleep duration varies as a function of glutamate and GABA in rat
... weighing 235–250 g were purchased from Charles River Laboratories (Wilmington, MA, USA) and housed in a temperature and humidity controlled environment. Rats were kept on a 12 h light/ dark cycle (lights on at 0600), had ad libitum access to food and water, and were allowed a minimum of 1 week for a ...
... weighing 235–250 g were purchased from Charles River Laboratories (Wilmington, MA, USA) and housed in a temperature and humidity controlled environment. Rats were kept on a 12 h light/ dark cycle (lights on at 0600), had ad libitum access to food and water, and were allowed a minimum of 1 week for a ...
D27 - Viktor`s Notes for the Neurosurgery Resident
... before awakening). – 85% of all spontaneous awakenings occur on rising slope of temperature cycle. – misalignment of endogenous circadian pacemaker output with desired sleep-wake cycle is thought to be responsible for certain types of insomnia, as well as for alertness & performance↓ in night-shift ...
... before awakening). – 85% of all spontaneous awakenings occur on rising slope of temperature cycle. – misalignment of endogenous circadian pacemaker output with desired sleep-wake cycle is thought to be responsible for certain types of insomnia, as well as for alertness & performance↓ in night-shift ...
Tuning Curve Shift by Attention Modulation in Cortical Neurons: a
... ‘Spotlight’ Bias and Shift Effect: A Heuristic Argument In order to clarify the challenge in explaining the shift effect (Connor et al., 1996, 1997) within a local network model where attention acts via a ‘spotlight’ bias input, we consider the following heuristic constructions. First, let us assume ...
... ‘Spotlight’ Bias and Shift Effect: A Heuristic Argument In order to clarify the challenge in explaining the shift effect (Connor et al., 1996, 1997) within a local network model where attention acts via a ‘spotlight’ bias input, we consider the following heuristic constructions. First, let us assume ...
Metabolic signals in sleep regulation: recent insights The Harvard
... rhythmicity in behavioral state changes. Since the first description of the circadian “clock” (circadian locomotor output cycles kaput) gene in the suprachiasmatic nuclei (SCN) within the brain,14 other clocks in the peripheral organs associated with energy regulation have been recognized that follo ...
... rhythmicity in behavioral state changes. Since the first description of the circadian “clock” (circadian locomotor output cycles kaput) gene in the suprachiasmatic nuclei (SCN) within the brain,14 other clocks in the peripheral organs associated with energy regulation have been recognized that follo ...
Normal sleep and circadian rhythms: Neurobiologic mechanisms
... wakefulness to sleep and later during sleep serves as a transition between REM-NREM sleep cycles. Typically, stage 1 constitutes 2% to 5% of total sleep time. An increase in the amount or percentage of stage 1 sleep may be a sign of sleep disruption. The brief first period of stage 1 NREM sleep is f ...
... wakefulness to sleep and later during sleep serves as a transition between REM-NREM sleep cycles. Typically, stage 1 constitutes 2% to 5% of total sleep time. An increase in the amount or percentage of stage 1 sleep may be a sign of sleep disruption. The brief first period of stage 1 NREM sleep is f ...
Neuroscience of Sleep - University of Ilorin
... wakefulness, such as histamine noradrenaline and serotonin thereby shuting down of the body’s arousal system. • Histamine, for example is believed to be the primary chemical agent stimulating wakefulness, which is why antihistamines cause drowsiness. • A healthy intact hypothalamus is critical for n ...
... wakefulness, such as histamine noradrenaline and serotonin thereby shuting down of the body’s arousal system. • Histamine, for example is believed to be the primary chemical agent stimulating wakefulness, which is why antihistamines cause drowsiness. • A healthy intact hypothalamus is critical for n ...
rem sleep - Website Staff UI
... wakefulness, such as histamine noradrenaline and serotonin thereby shuting down of the body’s arousal system. • Histamine, for example is believed to be the primary chemical agent stimulating wakefulness, which is why antihistamines cause drowsiness. • A healthy intact hypothalamus is critical for n ...
... wakefulness, such as histamine noradrenaline and serotonin thereby shuting down of the body’s arousal system. • Histamine, for example is believed to be the primary chemical agent stimulating wakefulness, which is why antihistamines cause drowsiness. • A healthy intact hypothalamus is critical for n ...
Rapid eye movement sleep promotes cortical
... The correlation of REM sleep EEG activity with ODP and ERK phosphorylation prompted us to more closely examine single-neuron activity during this sleep state. For example, in adult rodent hippocampus (13) and visual cortex (14), neuronal activity patterns present during maze running can be detected ...
... The correlation of REM sleep EEG activity with ODP and ERK phosphorylation prompted us to more closely examine single-neuron activity during this sleep state. For example, in adult rodent hippocampus (13) and visual cortex (14), neuronal activity patterns present during maze running can be detected ...
Low Quality
... controls this transition between wake and sleep lies at the heart of disorders such as insomnia and narcolepsy, as discussed in “Sleep gone awry.” The third article, “Dying to sleep,” documents what happens when people go without enough sleep. Chronic sleep deprivation poses more serious health risk ...
... controls this transition between wake and sleep lies at the heart of disorders such as insomnia and narcolepsy, as discussed in “Sleep gone awry.” The third article, “Dying to sleep,” documents what happens when people go without enough sleep. Chronic sleep deprivation poses more serious health risk ...
Signal processing methods in Sleep Research
... basis. Sleeping less than 7 hours per night on a regular basis is associated with adverse health outcomes, including weight gain and obesity, diabetes, hypertension, heart disease and stroke, depression, and increased risk of death. Sleeping less than 7 hours per night is also associated with impair ...
... basis. Sleeping less than 7 hours per night on a regular basis is associated with adverse health outcomes, including weight gain and obesity, diabetes, hypertension, heart disease and stroke, depression, and increased risk of death. Sleeping less than 7 hours per night is also associated with impair ...
Sleep/Neurology-The Orexin System
... Moderate to severe AD patients showed significantly increased orexin levels compared to normal controls and mild AD patients Moderate-severe AD patients exhibited more impaired nocturnal sleep compared to normal controls and mild AD patients The global AD group had orexin levels that were positively ...
... Moderate to severe AD patients showed significantly increased orexin levels compared to normal controls and mild AD patients Moderate-severe AD patients exhibited more impaired nocturnal sleep compared to normal controls and mild AD patients The global AD group had orexin levels that were positively ...
The Study of Brain Activity in Sleep
... enter in a “bistable” state. In this condition, a spontaneous or induced opening of leakage K+ channels triggers a series of membrane currents that produce the slow oscillation. The slow oscillation is characterized by a hyperpolarization phase or down-state (neuronal silence, 1), which lasts a few ...
... enter in a “bistable” state. In this condition, a spontaneous or induced opening of leakage K+ channels triggers a series of membrane currents that produce the slow oscillation. The slow oscillation is characterized by a hyperpolarization phase or down-state (neuronal silence, 1), which lasts a few ...
Chapter 9b final
... circadian rhythms controlled by the SCN. • E.g., Shift Work and Jet Lag This desynchronization produces sleep disturbances and mood changes, disrupts functioning during normal waking hours. People adapt more rapidly if artificial light is kept bright in the workplace and if the bedroom is kept dark ...
... circadian rhythms controlled by the SCN. • E.g., Shift Work and Jet Lag This desynchronization produces sleep disturbances and mood changes, disrupts functioning during normal waking hours. People adapt more rapidly if artificial light is kept bright in the workplace and if the bedroom is kept dark ...
Stages of Sleep And Brain Mechanisms
... Stages of Sleep And Brain Mechanisms • Sleep apnea is a sleep disorder characterized by the inability to breathe while sleeping for a prolonged period of time. • Consequences include sleepiness during the day, impaired attention, depression, and sometimes heart problems. • Cognitive impairment may ...
... Stages of Sleep And Brain Mechanisms • Sleep apnea is a sleep disorder characterized by the inability to breathe while sleeping for a prolonged period of time. • Consequences include sleepiness during the day, impaired attention, depression, and sometimes heart problems. • Cognitive impairment may ...
Stages of Sleep And Brain Mechanisms
... Stages of Sleep And Brain Mechanisms • Sleep apnea is a sleep disorder characterized by the inability to breathe while sleeping for a prolonged period of time. • Consequences include sleepiness during the day, impaired attention, depression, and sometimes heart problems. • Cognitive impairment may ...
... Stages of Sleep And Brain Mechanisms • Sleep apnea is a sleep disorder characterized by the inability to breathe while sleeping for a prolonged period of time. • Consequences include sleepiness during the day, impaired attention, depression, and sometimes heart problems. • Cognitive impairment may ...
EEG & Sleep
... • Grand mal epilepsy is characterized by extreme neuronal discharges in all areas of the brain cerebral cortex, deep parts of cerebrum, and brain stem. • Discharges transmitted into the spinal cord sometimes cause generalized tonic seizures of the entire body, followed by alternating tonic and spa ...
... • Grand mal epilepsy is characterized by extreme neuronal discharges in all areas of the brain cerebral cortex, deep parts of cerebrum, and brain stem. • Discharges transmitted into the spinal cord sometimes cause generalized tonic seizures of the entire body, followed by alternating tonic and spa ...
Shift work
Shift work is an employment practice designed to make use of, or provide service across, all 24 hours of the clock each day of the week (abbreviated as 24/7). The practice typically sees the day divided into shifts, set periods of time during which different groups of workers perform their duties. The term ""shift work"" includes both long-term night shifts and work schedules in which employees change or rotate shifts.In medicine and epidemiology, shift work is considered a risk factor for some health problems in some individuals, as disruption to circadian rhythms may increase the probability of developing cardiovascular disease, cognitive impairment, diabetes, and obesity, among other conditions.Shift work can also contribute to strain in marital, family, and personal relationships.