Saccade Analysis
Saccade Analysis - Related Videos
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.
15:04
A Neuronal and Astrocyte Co-Culture Assay for High Content Analysis of Neurotoxicity
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Cited by 46 •
2009
This article describes a novel protocol and reagent set designed for sensitive measurement of neurotoxic effects of compounds and treatments on co-cultures of neurons and astrocytes using high content analysis. Results demonstrate that high content analysis represents an exciting novel technology for neurotoxicity assessment.
10:39
Automated Analysis of Intracellular Phenotypes of Salmonella Using ImageJ
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Cited by 3 •
2022
Salmonella invades and replicates inside intestinal epithelial cells both in Salmonella-specific vacuoles and free in the cytosol (hyper-replication). A high-throughput fluorescence microscopy-based protocol is described here to quantify the intracellular phenotypes of Salmonella by two complementary image analyses through ImageJ, reaching single-cell resolution and scoring.
06:19
Eye Tracking in Cognitive Experiments
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2023
Eye tracking as the name suggests involves tracking of eye-movements. It is a non-invasive, sensitive tool that quantifies and measures eye-movements to describe an individuals' cognitive state. An eye-movement between two fixation points is called a saccade, which is one of the fastest motor movements in our body. By observing the profiles of these eye movements, scientists can better understand neural deficits in patients with cognitive impairments. In this video, we will first look at an...
FAQs
These measures describe different aspects of eye-movement behavior. Direction and amplitude indicate where and how far the line of sight shifts, while duration and velocity characterize the movement itself. Latency captures the timing of the shift relative to a stimulus or task event. Examining the measures together helps relate observable eye behavior to attention, perception, and cognitive control.
Saccade latency provides information about how quickly a participant shifts gaze after encountering a visual target or task demand. In psychological research, that timing can be examined alongside direction, amplitude, duration, and velocity to investigate attentional processing and decision-making. It therefore adds a temporal dimension to analyses of how participants respond to visual information.
Direction and amplitude show how gaze shifts among visual targets and how far each shift travels. During visual search, these measures help researchers examine the organization of eye movements as participants inspect a display. Their patterns provide behavioral evidence about visual attention and perception, making them useful for connecting where people look with how they process a visual scene.
Saccade analysis treats measured eye behavior as an indirect window into processes that cannot be observed directly, including attention, perception, memory, and cognitive control. Researchers interpret movement characteristics within a stimulus or task context rather than viewing any single measure in isolation. This connection allows psychology experiments to relate gaze shifts to performance during reading, search, and decision-making.
A typical workflow uses eye tracking while participants view stimuli or perform a psychological task. The resulting gaze record is examined for saccade direction, amplitude, duration, velocity, and latency. Researchers then relate those measurements to the task or stimulus context, allowing eye behavior to be analyzed in connection with visual search, reading, memory, attention, or decision-making.
Psychologists use this approach when they need behavioral measures linked to visual and cognitive processing. Applications include studying visual search, reading, decision-making, memory, and attentional processing. Because the method records eye behavior during stimuli or tasks, it can support both basic research on mental processes and assessment of cognitive performance.
Atypical saccade patterns can indicate changes in neurological or psychiatric function, making them relevant to research that examines altered cognitive performance. Researchers may compare movement characteristics such as latency, velocity, duration, direction, or amplitude across task conditions. These observations provide a behavioral basis for investigating how visual and cognitive processing may differ across populations or circumstances.