{"id":33756,"date":"2025-10-24T21:03:13","date_gmt":"2025-10-25T02:03:13","guid":{"rendered":"https:\/\/www.sr-research.com\/?page_id=33756"},"modified":"2026-02-25T15:54:31","modified_gmt":"2026-02-25T20:54:31","slug":"eye-tracking-transsaccadic-perception","status":"publish","type":"page","link":"https:\/\/www.sr-research.com\/zh\/case-studies\/eye-tracking-transsaccadic-perception\/","title":{"rendered":"\u773c\u52a8\u8ffd\u8e2a\u8de8\u626b\u89c6\u611f\u77e5"},"content":{"rendered":"<style>.wp-block-kadence-column.kb-section-dir-horizontal > .kt-inside-inner-col > .kt-info-box33756_0f622b-33 .kt-blocks-info-box-link-wrap{max-width:unset;}.kt-info-box33756_0f622b-33 .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-box33756_0f622b-33 .kadence-info-box-icon-container .kt-info-svg-icon, .kt-info-box33756_0f622b-33 .kt-info-svg-icon-flip, .kt-info-box33756_0f622b-33 .kt-blocks-info-box-number{font-size:50px;}.kt-info-box33756_0f622b-33 .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-box33756_0f622b-33 .kt-blocks-info-box-media .kadence-info-box-image-intrisic img{border-radius:200px;}.kt-info-box33756_0f622b-33 .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-box33756_0f622b-33 .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-box33756_0f622b-33 .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-box33756_0f622b-33 .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-box33756_0f622b-33\"><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: The Role of Eye Tracking in Understanding Transsaccadic Perception of Spatial Frequency Changes<\/h2><p class=\"kt-blocks-info-box-text\"><\/p><\/div><\/span><\/div>\n\n\n<style>.kb-image33756_8d3326-9d .kb-image-has-overlay:after{opacity:0.3;}.kb-image33756_8d3326-9d img.kb-img, .kb-image33756_8d3326-9d .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}<\/style>\n<div class=\"wp-block-kadence-image kb-image33756_8d3326-9d\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"683\" src=\"https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-scaled.png\" alt=\"Transsaccadic Eye Tracking\" class=\"kb-img wp-image-33842\" srcset=\"https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-18x5.png 18w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-300x80.png 300w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-768x205.png 768w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-1024x273.png 1024w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-1536x410.png 1536w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-2048x546.png 2048w, https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-scaled.png 2560w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure><\/div>\n\n\n\n<p>The human visual system constantly integrates information across saccades, to create a stable and continuous perception of the world. However, visual processing differs significantly between the fovea (central vision) and the periphery. In their recent paper, &#8220;<strong><a href=\"https:\/\/doi.org\/10.1016\/j.visres.2024.108453\" target=\"_blank\" rel=\"noreferrer noopener\">A bias in transsaccadic perception of spatial frequency changes<\/a><\/strong>,&#8221; Sharvashidze, H\u00fcbner, and Sch\u00fctz (2024) addressed two key questions. Firstly, whether spatial frequence (SF) appearance differs before and after a saccade, and secondly, how this potential discrepancy impacts transsaccadic change discrimination. Previous research suggested that SF appears higher in the periphery compared to the fovea, leading to a hypothesis that the visual system might predict SF decreases after a saccade.<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading33756_d37487-77, .wp-block-kadence-advancedheading.kt-adv-heading33756_d37487-77[data-kb-block=\"kb-adv-heading33756_d37487-77\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading33756_d37487-77 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading33756_d37487-77[data-kb-block=\"kb-adv-heading33756_d37487-77\"] 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-heading33756_d37487-77 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading33756_d37487-77[data-kb-block=\"kb-adv-heading33756_d37487-77\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading33756_d37487-77 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading33756_d37487-77\">Transsaccadic Change Discrimination Methodology<\/h2>\n\n\n\n<p>The researchers conducted two experiments. Experiment 1 focused on both appearance discrimination (comparing SF before and after a saccade) and change discrimination (identifying SF increases or decreases during a saccade). Experiment 2 aimed to rule out response bias and further examine the underlying mechanisms by comparing transsaccadic change discrimination with presaccadic SF discrimination, where participants only had to discriminate SF based on presaccadic information.<\/p>\n\n\n\n<p>Eye movements were recorded by an SR Research <strong><a href=\"https:\/\/www.sr-research.com\/eyelink-1000-plus\/\">EyeLink 1000 Plus<\/a><\/strong>, sampling at 1000 Hz, which allowed the researchers to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Accurately detect saccade onset and offset:<\/strong> This was crucial for controlling the timing of stimulus presentation (presaccadic and postsaccadic) and ensuring that changes occurred precisely <em>during<\/em> the saccade.<\/li>\n\n\n\n<li><strong>Monitor gaze position:<\/strong> Eye tracking ensured participants were fixating correctly on the central stimulus and making the intended saccades to peripheral targets. This was vital for distinguishing between foveal and peripheral processing.<\/li>\n\n\n\n<li><strong>Identify and exclude problematic trials:<\/strong> Trials with blinks, saccades landing outside the target region, or abnormal saccade latencies were identified and excluded, maintaining the integrity and reliability of the data.<\/li>\n\n\n\n<li><strong>Analyze saccade latencies:<\/strong> The researchers analyzed saccade latencies as a function of presaccadic SF, replicating previous findings that longer saccade latencies are associated with higher presaccadic SFs. This provided additional insights into the dynamics of visual processing before a saccade.<\/li>\n<\/ul>\n\n\n\n<p>Without the high temporal and spatial precision offered by the EyeLink system, it would have been impossible to accurately time the stimulus changes relative to saccade execution, or to control for the subtle but significant variations in eye movements that could influence perception.&nbsp;<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading33756_e5f606-e3, .wp-block-kadence-advancedheading.kt-adv-heading33756_e5f606-e3[data-kb-block=\"kb-adv-heading33756_e5f606-e3\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading33756_e5f606-e3 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading33756_e5f606-e3[data-kb-block=\"kb-adv-heading33756_e5f606-e3\"] 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-heading33756_e5f606-e3 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading33756_e5f606-e3[data-kb-block=\"kb-adv-heading33756_e5f606-e3\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading33756_e5f606-e3 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading33756_e5f606-e3\"><strong>Results Suggest Masking or Overwriting of Presaccadic Information<\/strong><\/h2>\n\n\n\n<p>The study yielded several significant findings:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>No consistent difference in SF appearance across saccades:<\/strong> Contrary to some previous findings, Experiment 1 found no significant difference in the perceived SF before and after a saccade.<\/li>\n\n\n\n<li><strong>A strong bias to report SF increases:<\/strong> Despite the lack of appearance differences, participants showed a clear and persistent bias to perceive SF <em>increases<\/em> across saccades. This bias was evident in both blank and no-blank conditions of Experiment 1 and replicated in Experiment 2, ruling out a simple response preference.<\/li>\n\n\n\n<li><strong>Improved precision with postsaccadic blanking:<\/strong> A 200-ms postsaccadic blank improved the precision of SF change discrimination in Experiment 1, but it did not eliminate the directional bias. Interestingly, this improvement was not observed in Experiment 2, suggesting that blanking may be less effective when stimuli are viewed parafoveally rather than foveally.<\/li>\n\n\n\n<li><strong>Presaccadic discrimination is more precise than transsaccadic change discrimination:<\/strong> Experiment 2 revealed that participants could discriminate SFs with much higher precision in a presaccadic-only task compared to the transsaccadic change discrimination task. This suggests that transsaccadic change detection is impaired, possibly due to masking or overwriting of presaccadic information by postsaccadic input.<\/li>\n\n\n\n<li><strong>Evidence for masking\/overwriting:<\/strong> The authors propose that the observed bias might stem from more effective masking or overwriting of the presaccadic stimulus by postsaccadic <em>low<\/em> SF stimuli, especially during a transition from high to low SFs. This is further supported by differences in processing speeds between magnocellular (low SF) and parvocellular (high SF) pathways.<\/li>\n<\/ul>\n\n\n\n<p>The research provides valuable insights into the complexities of transsaccadic perception, particularly concerning spatial frequency changes. The persistent bias towards perceiving SF increases across saccades, coupled with evidence suggesting masking or overwriting of presaccadic information, opens new avenues for understanding how the visual system integrates dynamic visual input. This study illustrates how high-precision eye tracking is not just a tool, but an integral component of experimental design in vision research, enabling researchers to meticulously control for and measure the subtle yet profound interactions between eye movements and perception.<\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-33756_adabf9-bd .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-33756_adabf9-bd .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-33756_adabf9-bd\"><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-heading33756_2e3095-fe, .wp-block-kadence-advancedheading.kt-adv-heading33756_2e3095-fe[data-kb-block=\"kb-adv-heading33756_2e3095-fe\"]{text-align:center;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading33756_2e3095-fe mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading33756_2e3095-fe[data-kb-block=\"kb-adv-heading33756_2e3095-fe\"] 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-heading33756_2e3095-fe img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading33756_2e3095-fe[data-kb-block=\"kb-adv-heading33756_2e3095-fe\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<p class=\"kt-adv-heading33756_2e3095-fe wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading33756_2e3095-fe\">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-xl);--row-gap:var(--spacing-xxxxl);--align-columns:start;--align-columns-vertical:initial;\">\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>The human visual system constantly integrates information across saccades, to create a stable and continuous perception of the world. However, visual processing differs significantly between the fovea (central vision) and the periphery. In their recent paper, &#8220;A bias in transsaccadic perception of spatial frequency changes,&#8221; Sharvashidze, H\u00fcbner, and Sch\u00fctz (2024) addressed two key questions. Firstly, &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 v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Eye Tracking Transsaccadic Perception - Fast, Accurate, Reliable Eye Tracking<\/title>\n<meta name=\"description\" content=\"Delve into the findings of transsaccadic perception and how eye tracking reveals differences in spatial frequency processing.\" \/>\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-transsaccadic-perception\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Eye Tracking Transsaccadic Perception\" \/>\n<meta property=\"og:description\" content=\"Delve into the findings of transsaccadic perception and how eye tracking reveals differences in spatial frequency processing.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sr-research.com\/zh\/case-studies\/eye-tracking-transsaccadic-perception\/\" \/>\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=\"2026-02-25T20:54:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.sr-research.com\/wp-content\/uploads\/2025\/10\/transsaccadic-eye-tracking-8.0-scaled.png\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"683\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\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=\"4 \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-transsaccadic-perception\\\/\",\"url\":\"https:\\\/\\\/www.sr-research.com\\\/case-studies\\\/eye-tracking-transsaccadic-perception\\\/\",\"name\":\"Eye Tracking Transsaccadic Perception - 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