Compensatory Saccades
Compensatory Saccades - Related Videos
07:57
Integrated Compensatory Responses in a Human Model of Hemorrhage
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Cited by 11 •
2016
The purpose of this protocol is to demonstrate the techniques for measuring compensatory responses to reduced central blood volume using lower body negative pressure as a noninvasive experimental model of human hemorrhage which can be used to quantify the total integration of compensatory mechanisms to blood volume deficit in humans.
09:22
Mouse Pneumonectomy Model of Compensatory Lung Growth
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Cited by 14 •
2014
Mouse pneumonectomy is a commonly employed model of compensatory lung growth. This procedure can be used in conjunction with lineage tracing or transgenic mouse models to elucidate underlying mechanisms.
08:01
Compensatory Limb Use and Behavioral Assessment of Motor Skill Learning Following Sensorimotor Cortex Injury in a Mouse Model of Ischemic Stroke
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Cited by 6 •
2014
Mouse models have become increasingly popular in studies of behavioral neuroscience. As models advance, it is important to develop sensitive behavioral measures specific to the mouse. This protocol describes the Pasta Matrix Reaching Task, which is a skilled motor task for use in mouse models of stroke.
06:12
Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram
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Cited by 4 •
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.
06:46
Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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Cited by 4 •
2019
This experimental protocol combined eye tracking and the assessment of presaccadic visual sensitivity in a dual task paradigm, consisting of a free choice saccade task and a visual discrimination task, to investigate the deployment of visual spatial attention before both, accurate and averaging saccades.
FAQs
Timing depends on when the mismatch between head movement and eye response produces enough retinal image slip to require correction. A saccade may occur while motion continues, or after the movement has ended, redirecting the eyes toward the intended target. This timing helps distinguish an immediate correction from a delayed response in gaze-stabilization studies.
The direction indicates where the eyes must be redirected to recover the target, whereas amplitude reflects how far they drifted from the desired gaze position. Examining both features, together with timing, shows the size and organization of the corrective response. These measurements can therefore reveal how effectively eye movements compensate for vestibulo-ocular mismatch.
Because these movements arise when vestibulo-ocular reflex performance does not fully match head motion, their characteristics provide a behavioral readout of gaze-stabilization control. In neuroscience, timing, direction, and amplitude are especially informative for studying vestibular and cerebellar function. Changes in these measures can also support evaluation of adaptation or recovery after injury.
Analysis begins by relating eye movements to the accompanying head or body motion while the participant attempts to maintain visual fixation. Investigators examine whether a corrective movement occurs during or after motion, then characterize its timing, direction, and amplitude. Comparing these features with the expected target position helps assess gaze stabilization and identify vestibulo-ocular mismatch.
They are useful when a study needs an observable indicator of inadequate gaze stabilization. A pattern of corrective movements can help identify deficits in the vestibular system because the response reflects incomplete matching between head motion and eye movement. The same measures can be followed over time to assess recovery or adaptation after an injury.
The vestibulo-ocular reflex acts during head movement to keep the visual scene stable, but it may not fully match the movement. A compensatory saccade supplies a corrective redirection when retinal image slip remains. Studying both processes clarifies whether fixation was maintained continuously or restored through a later eye-movement correction.