latency

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Related to Sleep latency: MSLT

latency

[′lat·ən·sē]
(computer science)
The waiting time between the order to read/write some information from/to a specified place and the beginning of the data-read/write operation.
(medicine)
The stage of an infectious disease, other than the incubation period, in which there are neither clinical signs nor symptoms.
(physiology)
The period between the introduction of and the response to a stimulus.
(psychology)
The phase between the Oedipal period and adolescence, characterized by an apparent cessation of psychosexual development.

latency

(communications)
1. The time it takes for a packet to cross a network connection, from sender to receiver.

2. The period of time that a frame is held by a network device before it is forwarded.

Two of the most important parameters of a communications channel are its latency, which should be low, and its bandwidth, which should be high. Latency is particularly important for a synchronous protocol where each packet must be acknowledged before the next can be transmitted.

latency

(1) Essentially any delay or lapse in time. In general, it is the time between initiating a request in the computer and receiving the answer. Data latency may refer to the time between a query and the results arriving at the screen or the time between initiating a transaction that modifies one or more databases and its completion.

Disk latency is the time it takes for the selected sector to be positioned under the read/write head. Channel latency is the time it takes for a computer channel to become unoccupied in order to transfer data. Network latency is the delay introduced when a packet is momentarily stored, analyzed and then forwarded.

(2) With malicious software, latency is the period between infection and the first obvious damage to the host system. Many viruses or logic bombs written by amateurs have a short latency and are therefore relatively easy to detect; however, more vicious malware can lie dormant or replicate to many other hosts and then wreak havoc unexpectedly. See logic bomb and virus.
References in periodicals archive ?
The results of the present study demonstrated significant effect sizes, in particular in regards to the CSDS measurements, while being in line with the results of previous research that indicated that children who had a behavioral intervention which included components intended to promote the child's ability to self-calm and fall asleep independently, such as extinction for example, led to significant improvements in sleep quality, such as reduction in bedtime resistance (Adams & Rickert, 1989; Moore, Friman, Fruzzetti, & Macaleese, 2007), sleep latency (Blunden, 2011) and night wakings (Blunden, 2011; Moore et al., 2007; Seymour, Bayfield, Brock, & During, 1983).
Sleep Latency###Mean Sleep Latency (minutes) +- SD###20.83+-17.375###22.622+-19.593###21.669+-18.432###0.222
However, the results of the PSG did not indicate much change in other sleep parameters including sleep latency, which did not provide definite evidence for the effectiveness of sedative music to aid sleep quality.
Average sleep latency was measured under excitation in the horizontal direction, and the results are shown in Figure 11.
The factor PSQI sleep latency first decreases from 3 to 1 and then increases back to 2 at follow-up.
In the diagnosis, multiple sleep latency test (MSLT) and CSF hypocretin measurement are needed in addition to appropriate clinical history.
A nonparametric correlation (listwise) analysis was performed between the different demographic variables (age, gender, year in school and race/ethnicity) and the sleep quality components (sleep duration, sleep disturbance, sleep latency, sleep efficiency, overall sleep quality, and needs medication to sleep).
PSG and multiple sleep latency tests (MSLT) were performed during their episodes and the results were evaluated.
It was observed that in the GABA control group, sleep latency, the time between wakefulness and the first stage of sleep, was greatly reduced.
At higher doses it may cause a decrease in sleep latency on the multiple sleep latency test.
This test differentiates sleep by measuring seven components as: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medications, and daytime dysfunction over the last month.
It has seven subcomponents subjective sleep quality, sleep latency, sleep duration, sleep efficiency, sleep disturbance, daytime dysfunction, and sleep medicine.