Saccadic Latency
Saccadic Latency - Related Videos
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.
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...
07:10
Humanized NOD/SCID/IL2rγnull (hu-NSG) Mouse Model for HIV Replication and Latency Studies
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Cited by 14 •
2019
This protocol provides a method to establish humanized mice (hu-NSG) via intrahepatic injection of human hematopoietic stem cells into radiation-conditioned neonatal NSG mice. The hu-NSG mouse is susceptible to HIV infection and combinatorial antiretroviral therapy (cART) and serves as a suitable pathophysiological model for HIV replication and latency investigations.
06:12
Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram
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Cited by 5 •
2018
The article describes a practical method for recording horizontal eye movements with high accuracy by electro-oculogram in neurological patients, using a cup Ag-AgCl electrode with a wide plastic fringe. Stable measurement requires proper selection and fixation of electrodes, taking sufficient time for light adaptation to occur, and re-calibration as needed.
05:44
Using Saccadometry with Deep Brain Stimulation to Study Normal and Pathological Brain Function
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Cited by 7 •
2016
This paper describes the use of quantitative measurement of eye movements in conjunction with stimulation of focal areas of the deep brain in order to study physiology, pathophysiology, and the mechanisms of deep brain stimulation.
FAQs
Variation reflects the coordination of several linked operations rather than a single visual event. The brain must detect visual information, select a relevant target, decide how to respond, prepare the movement, and then activate the extraocular muscles. Measuring the interval provides a behavioral index of how efficiently these perceptual, attentional, decisional, and motor processes work together.
Visual cues and expectation alter how readily a target is detected and selected. In a task with cues, researchers can examine whether prior information changes the time required for attention, decision-making, and motor preparation to produce an eye movement. This makes latency useful for studying how expectation shapes the coordination of visual information with action.
Distractors and competing targets introduce selection demands that are not present when one target stands alone. The resulting latency differences can indicate how effectively a person filters irrelevant information, resolves competition, and maintains cognitive control. Such designs help separate general eye-movement timing from the attentional processes involved in choosing where to look.
Differences in latency can reveal changes in the relationship between perception, attention, decision-making, and movement preparation. Researchers may examine these differences in relation to aging, neurological conditions, or psychological disorders. The measure does not isolate one process by itself, but it can show that visual information and action are being coordinated differently.
Researchers measure the interval from a visual target’s appearance to the initiation of the saccade. Experimental tasks can include visual cues, distractors, or multiple competing targets, allowing investigators to compare timing across different attentional and decision-making demands. The central outcome is a latency value that links the timing of target processing to the start of movement.
It is useful when a study needs a behavioral measure of how visual information guides action under different selection demands. Comparing latency in cueing, distraction, or target-competition tasks can reveal how attention and cognitive control affect responses. In psychology, these comparisons support investigations of expectation, aging, neurological conditions, and psychological disorders.