{"id":31200,"date":"2025-07-23T14:04:11","date_gmt":"2025-07-23T19:04:11","guid":{"rendered":"https:\/\/www.sr-research.com\/?page_id=31200"},"modified":"2025-07-23T14:04:12","modified_gmt":"2025-07-23T19:04:12","slug":"eye-tracking-smooth-pursuit-and-saccades","status":"publish","type":"page","link":"https:\/\/www.sr-research.com\/zh\/case-studies\/eye-tracking-smooth-pursuit-and-saccades\/","title":{"rendered":"\u773c\u52a8\u8ffd\u8e2a\u5e73\u6ed1\u8ffd\u8e2a\u548c\u8df3\u8dc3"},"content":{"rendered":"<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box31200_49c2ac-e7 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box31200_49c2ac-e7 .kt-blocks-info-box-link-wrap{border-top:0px solid #ffffff;border-right:0px solid #ffffff;border-bottom:0px solid #ffffff;border-left:0px solid #ffffff;border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;background:#ffffff;padding-top:0px;padding-right:var(--global-kb-spacing-xs, 1rem);padding-bottom:var(--global-kb-spacing-xs, 1rem);padding-left:var(--global-kb-spacing-xs, 1rem);}.kt-info-box31200_49c2ac-e7 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box31200_49c2ac-e7 .kt-info-svg-icon-flip, .kt-info-box31200_49c2ac-e7 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box31200_49c2ac-e7 .kt-blocks-info-box-media{color:#006cff;border-radius:200px;overflow:hidden;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px;margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:-40px;}.kt-info-box31200_49c2ac-e7 .kt-blocks-info-box-media .kadence-info-box-image-intrisic img{border-radius:200px;}.kt-info-box31200_49c2ac-e7 .kt-infobox-textcontent h2.kt-blocks-info-box-title{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-top:5px;margin-right:0px;margin-bottom:10px;margin-left:0px;}.kt-info-box31200_49c2ac-e7 .kt-blocks-info-box-learnmore{background:transparent;border-width:0px 0px 0px 0px;padding-top:4px;padding-right:8px;padding-bottom:4px;padding-left:8px;margin-top:10px;margin-right:0px;margin-bottom:10px;margin-left:0px;}@media all and (max-width: 1024px){.kt-info-box31200_49c2ac-e7 .kt-blocks-info-box-link-wrap{border-top:0px solid #ffffff;border-right:0px solid #ffffff;border-bottom:0px solid #ffffff;border-left:0px solid #ffffff;}}@media all and (max-width: 767px){.kt-info-box31200_49c2ac-e7 .kt-blocks-info-box-link-wrap{border-top:0px solid #ffffff;border-right:0px solid #ffffff;border-bottom:0px solid #ffffff;border-left:0px solid #ffffff;}}<\/style>\n<div class=\"wp-block-kadence-infobox kt-info-box31200_49c2ac-e7\"><span class=\"kt-blocks-info-box-link-wrap info-box-link kt-blocks-info-box-media-align-left kt-info-halign-left\"><div class=\"kt-blocks-info-box-media-container\"><div class=\"kt-blocks-info-box-media kt-info-media-animate-none\"><div class=\"kadence-info-box-icon-container kt-info-icon-animate-none\"><div class=\"kadence-info-box-icon-inner-container\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_bookOpen kt-info-svg-icon\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z\"\/><path d=\"M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z\"\/><\/svg><\/span><\/div><\/div><\/div><\/div><div class=\"kt-infobox-textcontent\"><h2 class=\"kt-blocks-info-box-title\">CASE STUDY: Latency and Amplitude of Catch-Up Saccades to Accelerating Targets<\/h2><p class=\"kt-blocks-info-box-text\"><\/p><\/div><\/span><\/div>\n\n\n<style>.kb-image31200_3f7361-93 .kb-image-has-overlay:after{opacity:0.3;}.kb-image31200_3f7361-93 img.kb-img, .kb-image31200_3f7361-93 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}<\/style>\n<div class=\"wp-block-kadence-image kb-image31200_3f7361-93\"><figure class=\"aligncenter size-cover\"><img loading=\"lazy\" decoding=\"async\" width=\"2048\" height=\"614\" src=\"https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/07\/eye-tracking-smooth-pursuit-catch-up-saccades-1.0-2048x614.jpg\" alt=\"Eye Tracking Smooth Pursuit and Catch-Up Saccades\" class=\"kb-img wp-image-31270\" srcset=\"https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/07\/eye-tracking-smooth-pursuit-catch-up-saccades-1.0-18x5.jpg 18w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/07\/eye-tracking-smooth-pursuit-catch-up-saccades-1.0-300x90.jpg 300w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/07\/eye-tracking-smooth-pursuit-catch-up-saccades-1.0-768x230.jpg 768w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/07\/eye-tracking-smooth-pursuit-catch-up-saccades-1.0-1024x307.jpg 1024w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/07\/eye-tracking-smooth-pursuit-catch-up-saccades-1.0-1536x461.jpg 1536w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/07\/eye-tracking-smooth-pursuit-catch-up-saccades-1.0-2048x614.jpg 2048w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><\/figure><\/div>\n\n\n\n<p>Understanding how humans track moving objects is crucial in various fields, from sports performance analysis to neurological disorder diagnostics. The intricate dance between smooth pursuit and saccadic eye movements allows us to maintain a clear visual image of a moving target on the fovea. When smooth pursuit falters, swift &#8220;catch-up saccades&#8221; correct the tracking error. A recent study, &#8220;<strong><a href=\"https:\/\/doi.org\/10.1152\/jn.00123.2024\" target=\"_blank\" rel=\"noreferrer noopener\">Latency and amplitude of catch-up saccades to accelerating targets<\/a><\/strong>,&#8221; by Dor\u00e9 et al. (2025), sheds new light on the factors influencing these critical eye movements, specifically the role of retinal acceleration error. This case study will highlight the indispensable role of eye tracking technology, particularly the <strong><a href=\"https:\/\/www.sr-research.com\/eyelink-1000-plus\/\">EyeLink 1000<\/a><\/strong> eye tracker system, in enabling such detailed and impactful research.<\/p>\n\n\n\n<p>Previous research has established that retinal position and velocity errors are key determinants of saccade latency and amplitude during smooth pursuit. However, the influence of retinal acceleration error has remained largely unquantified. Investigating this required a high level of precision in measuring eye movements in response to targets that continuously changed speed, including sudden position shifts to trigger catch-up saccades. The ability to accurately capture subtle eye movements and synchronize them with precise target kinematics was paramount to isolating the effect of acceleration.<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading31200_fea9c0-a0, .wp-block-kadence-advancedheading.kt-adv-heading31200_fea9c0-a0[data-kb-block=\"kb-adv-heading31200_fea9c0-a0\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading31200_fea9c0-a0 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading31200_fea9c0-a0[data-kb-block=\"kb-adv-heading31200_fea9c0-a0\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading31200_fea9c0-a0 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading31200_fea9c0-a0[data-kb-block=\"kb-adv-heading31200_fea9c0-a0\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading31200_fea9c0-a0 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading31200_fea9c0-a0\">Eye Tracking Technology Methodology<\/h2>\n\n\n\n<p>Dor\u00e9 et al. used an SR Research EyeLink 1000 eye tracker video-based recording system, which provided the following benefits:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High Sampling Rate:<\/strong> Recording eye movements at 1,000 Hz provided a dense dataset, essential for capturing the rapid dynamics of saccades and the nuanced changes in pursuit.<\/li>\n\n\n\n<li><strong>Precision and Accuracy:<\/strong> The system&#8217;s ability to accurately track eye position facilitated the computation of eye velocity and acceleration, which are crucial for deriving retinal error signals.&nbsp;<\/li>\n\n\n\n<li><strong>Reliable Saccade Detection and Removal:<\/strong> The EyeLink system, combined with custom MATLAB code, allowed for the precise detection and removal of saccades from eye position signals. This was critical for isolating the smooth pursuit component and accurately calculating corrected saccade amplitudes.<\/li>\n<\/ul>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading31200_d1eee1-ba, .wp-block-kadence-advancedheading.kt-adv-heading31200_d1eee1-ba[data-kb-block=\"kb-adv-heading31200_d1eee1-ba\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading31200_d1eee1-ba mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading31200_d1eee1-ba[data-kb-block=\"kb-adv-heading31200_d1eee1-ba\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading31200_d1eee1-ba img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading31200_d1eee1-ba[data-kb-block=\"kb-adv-heading31200_d1eee1-ba\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading31200_d1eee1-ba wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading31200_d1eee1-ba\">Smooth Pursuit and Saccade Amplitude and Latency Results<\/h2>\n\n\n\n<p>The precise data gathered through eye tracking technology allowed the researchers to confirm their hypotheses:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Retinal Acceleration Error Influences Saccade Amplitude:<\/strong> A multiple linear regression analysis, using accurately measured eye position, velocity, and acceleration errors, revealed that retinal acceleration error was a statistically significant predictor of saccade amplitude, alongside position and velocity errors (p=2.029724e-09). The ability to derive these subtle acceleration error signals from the raw eye tracking data was key to this finding.<\/li>\n\n\n\n<li><strong>Retinal Acceleration Error Modulates Saccade Latency:<\/strong> The study found a significant interaction between the sign of acceleration error and the size of predicted position error on saccade latency. Specifically, saccade latencies were shorter when retinal acceleration error increased the tracking error, and longer when it decreased it. This intricate relationship could only be observed through the high-resolution temporal data provided by the eye tracker.<\/li>\n<\/ul>\n\n\n\n<p>The study by Dor\u00e9 et al. (2025) highlights the role of advanced eye tracking technology in cutting edge oculomotor research. The EyeLink 1000 system&#8217;s high sampling rate, precision, and reliability were fundamental to collecting the granular data required to unravel the complex mechanisms of human oculomotor control. Without such precise measurements, it would be impossible to quantify the subtle yet significant contribution of retinal acceleration error to catch-up saccade programming. This research not only expands our understanding of eye movements but also underscores how sophisticated eye tracking technology continues to push the boundaries of scientific discovery in human vision and motor control.<\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-31200_a09bce-dc .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-31200_a09bce-dc .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:50%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-31200_a09bce-dc\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading31200_1b279f-ab, .wp-block-kadence-advancedheading.kt-adv-heading31200_1b279f-ab[data-kb-block=\"kb-adv-heading31200_1b279f-ab\"]{text-align:center;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading31200_1b279f-ab mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading31200_1b279f-ab[data-kb-block=\"kb-adv-heading31200_1b279f-ab\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading31200_1b279f-ab img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading31200_1b279f-ab[data-kb-block=\"kb-adv-heading31200_1b279f-ab\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<p class=\"kt-adv-heading31200_1b279f-ab wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading31200_1b279f-ab\">For information regarding how eye tracking can help your research, check out our solutions and product pages or contact us. We are happy to help!<\/p>\n\n\n<div class=\"mai-columns has-xl-margin-top has-xl-margin-bottom\"><div class=\"mai-columns-wrap has-columns\" style=\"--column-gap:var(--spacing-xxxxl);--row-gap:var(--spacing-xl);--align-columns:start;--align-columns-vertical:center;\">\n<div class=\"mai-column is-column\" style=\"--columns-xs:1\/1;--flex-xs:0 0 var(--flex-basis);--columns-sm:1\/1;--flex-sm:0 0 var(--flex-basis);--columns-md:1\/3;--flex-md:0 0 var(--flex-basis);--columns-lg:1\/3;--flex-lg:0 0 var(--flex-basis);--justify-content:start;\">\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link button button-secondary wp-element-button\" href=\"https:\/\/www.sr-research.com\/solutions\/\">Solutions<\/a><\/div>\n<\/div>\n\n<\/div>\n\n<div class=\"mai-column is-column\" style=\"--columns-xs:1\/1;--flex-xs:0 0 var(--flex-basis);--columns-sm:1\/1;--flex-sm:0 0 var(--flex-basis);--columns-md:1\/3;--flex-md:0 0 var(--flex-basis);--columns-lg:1\/3;--flex-lg:0 0 var(--flex-basis);--justify-content:start;\">\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link button button-secondary wp-element-button\" href=\"https:\/\/www.sr-research.com\/hardware\/\">Products<\/a><\/div>\n<\/div>\n\n<\/div>\n\n<div class=\"mai-column is-column\" style=\"--columns-xs:1\/1;--flex-xs:0 0 var(--flex-basis);--columns-sm:1\/1;--flex-sm:0 0 var(--flex-basis);--columns-md:1\/3;--flex-md:0 0 var(--flex-basis);--columns-lg:1\/3;--flex-lg:0 0 var(--flex-basis);--justify-content:start;\">\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link button button-secondary wp-element-button\" href=\"https:\/\/www.sr-research.com\/get-in-touch\/\">Get in Touch<\/a><\/div>\n<\/div>\n\n<\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Understanding how humans track moving objects is crucial in various fields, from sports performance analysis to neurological disorder diagnostics. The intricate dance between smooth pursuit and saccadic eye movements allows us to maintain a clear visual image of a moving target on the fovea. When smooth pursuit falters, swift &#8220;catch-up saccades&#8221; correct the tracking error. &hellip;<\/p>","protected":false},"author":3,"featured_media":0,"parent":30161,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"class_list":{"1":"page","2":"type-page","5":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Eye Tracking Smooth Pursuit and Saccades - Fast, Accurate, Reliable Eye Tracking<\/title>\n<meta name=\"description\" content=\"EyeLink eye trackers&#039; high sampling rate, precision, and reliability enables the unravelling of human oculomotor control.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sr-research.com\/zh\/case-studies\/eye-tracking-smooth-pursuit-and-saccades\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Eye Tracking Smooth Pursuit and Saccades\" \/>\n<meta property=\"og:description\" content=\"EyeLink eye trackers&#039; high sampling rate, precision, and reliability enables the unravelling of human oculomotor control.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sr-research.com\/zh\/case-studies\/eye-tracking-smooth-pursuit-and-saccades\/\" \/>\n<meta property=\"og:site_name\" content=\"Fast, Accurate, Reliable Eye Tracking\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SR-Research-Ltd-640093842854433\/\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-23T19:04:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/07\/eye-tracking-smooth-pursuit-catch-up-saccades-1.0-2048x614.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@SRResearchLtd\" \/>\n<meta name=\"twitter:label1\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.sr-research.com\\\/case-studies\\\/eye-tracking-smooth-pursuit-and-saccades\\\/\",\"url\":\"https:\\\/\\\/www.sr-research.com\\\/case-studies\\\/eye-tracking-smooth-pursuit-and-saccades\\\/\",\"name\":\"Eye Tracking Smooth Pursuit and Saccades - 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