Latency Measurement
Latency Measurement - Related Videos
01:16
Psychosexual Stages of Personality: Latency
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2025
Following the phallic stage in Freud's theory of psychosexual development, children enter a phase called the latency period, which lasts from approximately six to twelve years of age. Unlike earlier stages, where sexual impulses played a central role, Freud believed these impulses are repressed during the latency period, becoming part of the unconscious. This stage is often described as a time of psychological calm after the turbulence of the phallic stage. The latency period is not considered...
12:22
A Primary Neuron Culture System for the Study of Herpes Simplex Virus Latency and Reactivation
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Cited by 49 •
2012
The protocol describes an efficient and reproducible model system to study herpes simplex virus type 1 (HSV-1) latency and reactivation. The assay employs homogenous sympathetic neuron cultures and allows for the molecular dissection of virus-neuron interactions using a variety of tools including RNA interference and expression of recombinant proteins.
05:52
Hyponeophagia: A Measure of Anxiety in the Mouse
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Cited by 39 •
2011
Mice and rats, due to their innate cautiousness, are initially slow in consuming a novel food, particularly in a novel place. This hyponeophagia can readily be measured in the laboratory, even though laboratory animals are much less anxious than their wild...
07:18
High Throughput In Vitro Assessment of Latency Reversing Agents on HIV Transcription and Splicing
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2019
A high throughput protocol for functional assessment of HIV efficient reactivation and clearance of latent proviruses is described and applied by testing the impact of interventions on HIV transcription and splicing. Representative results of the effect of latency reversing agents on LTR-driven transcription and splicing are provided.
06:01
Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R
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Cited by 1 •
2022
This article describes the semi-automated measurement of the amplitudes and latencies of the first five peaks and troughs in the auditory brainstem response waveform. An additional routine compiles and annotates the data into a spreadsheet for experimenter analysis. These free computer routines are executed using the open-source statistical package R.
FAQs
Synchronization aligns a stimulus or other defined event with the neural, muscular, or behavioral recording. This shared temporal reference lets researchers determine when a response begins or when a characteristic peak occurs relative to the event. Without accurate alignment, the calculated interval could misrepresent sensory processing, motor reaction time, or communication between brain regions.
Response onset and a characteristic peak mark different temporal features of a recorded response. Onset can indicate when a response first becomes detectable, whereas a peak identifies a prominent point in its development. Selecting one or the other changes the latency being compared, so the measurement should match the neural or behavioral process under investigation.
Latency differences can indicate changes in sensory processing, synaptic or conduction delays, motor reaction time, or communication between brain regions. Researchers may compare values across experimental conditions, individuals, or clinical groups to identify altered timing patterns. These comparisons provide temporal evidence about how neural pathway function varies, rather than focusing only on response magnitude.
A typical workflow establishes a defined stimulus or event, synchronizes its marker with the recording, and selects the response feature used for timing. The researcher then identifies response onset or a characteristic peak and calculates its interval from the event. Repeating the same procedure across conditions or groups supports meaningful latency comparisons.
The appropriate recording depends on the response being timed. Electroencephalography can be aligned with stimulus markers to examine neural responses, electromyography can capture the timing of muscular responses, and behavioral recordings can quantify reaction time. Using these signals allows researchers to study different stages of processing, from neural activity to motor output.
Latency measurement is useful when timing differences may distinguish normal variation from altered neural function. Studies can apply it to perception, cognition, neurological disorders, and treatment effects, while comparisons across conditions, individuals, or clinical groups reveal changes in temporal processing. The resulting measurements help evaluate how quickly information travels or responses emerge within neural systems.