Pro-saccade
Pro-saccade - 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.
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...
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.
05:36
Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
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2017
This study compared central versus divided visual field presentations of emotional images to assess differences in motivated attention between the two hemispheres. The late positive potential (LPP) was recorded using electroencephalography (EEG) and event-related potentials (ERPs) methodologies to assess motivated attention.
FAQs
A peripheral target produces retinal signals that engage the superior colliculus and related oculomotor brainstem circuits. These systems release the current fixation and organize the rapid gaze shift toward the stimulus. The sequence links visual detection with motor preparation, making the task useful for examining how efficiently sensory information is transformed into an orienting response.
Reaction time indicates how quickly the orienting response is initiated after the target appears, whereas accuracy indicates whether gaze is directed appropriately toward that target. Considering both measures helps distinguish slower sensorimotor processing from difficulty executing the intended movement. Together, they provide complementary evidence about visual attention and eye-movement control.
A pro-saccade task measures orienting toward the newly appearing stimulus, while an antisaccade task requires the participant to suppress that movement and look in the opposite direction. This contrast separates visually guided orienting from response inhibition. Comparing performance across the two tasks can clarify whether a finding reflects attention, motor control, or suppression of a reflexive response.
A typical trial presents a fixation point followed by a newly appearing peripheral stimulus. The participant must shift gaze toward that stimulus, and the task records how rapidly and accurately the movement occurs. This straightforward sequence links the visual event to the resulting eye movement and supplies behavioral measures for studying sensorimotor orienting.
Slower reaction times or reduced accuracy can signal less efficient visual orienting or eye-movement control, although interpretation depends on the research context. Because performance reflects several linked stages, including visual processing, fixation release, and motor execution, the measures are most informative when researchers relate them to the specific attentional or sensorimotor question being tested.
Psychologists use this paradigm to investigate visual attention, orienting responses, and the control of gaze across development and cognition research. It also provides a behavioral framework for studying neurological dysfunction. Its value comes from connecting observable reaction time and accuracy with the operation of neural systems involved in sensorimotor orienting.