{"688281":{"#nid":"688281","#data":{"type":"event","title":"PhD Proposal by Kai Xue","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EName: Kai Xue\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EPh.D. Dissertation Proposal Meeting\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EDay\/Time:\u003C\/strong\u003E\u0026nbsp;Thursday, February 26th, 2026 \u2013 12:30 PM Eastern Time\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ELocation\u003C\/strong\u003E: \u003Ca href=\u0022https:\/\/gatech.zoom.us\/my\/kaixue\u0022\u003Ehttps:\/\/gatech.zoom.us\/my\/kaixue\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAdvisor\u003C\/strong\u003E: Dobromir Rahnev (Georgia Tech)\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EDissertation Committee Members:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr. Sashank Varma (Georgia Tech)\u003C\/p\u003E\u003Cp\u003EDr. Tansu Celikel (Georgia Tech)\u003C\/p\u003E\u003Cp\u003EDr. Mengyao Li\u0026nbsp; (Georgia Tech)\u003C\/p\u003E\u003Cp\u003EDr. Megan Peters (University of California, Irvine)\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ETitle: The Computation of Confidence in Perceptual Decision-Making\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E: This dissertation investigates the computational mechanisms underlying confidence in perceptual decision-making through three related studies. Study 1 uses transcranial magnetic stimulation (TMS) to establish when confidence is computed, revealing that the dorsolateral prefrontal cortex (DLPFC) contributes to confidence during a broad temporal window overlapping with decision-making. Study 2 tests competing computational theories \u2014 Bayesian Confidence Hypothesis (BCH) versus Confidence in Raw Evidence Space (CRES) \u2014 in two-choice tasks, finding consistent support for evidence-based rather than probability-based confidence computation. Study 3 extends this investigation to multi-alternative decisions using a novel dot numerosity paradigm, demonstrating that confidence tracks the difference between the two highest evidence values rather than choice probability. Together, these studies advance a mechanistic framework in which confidence emerges in parallel with decisions and operates on sensory evidence rather than probability estimates.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003EThe Computation of Confidence in Perceptual Decision-Making\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"The Computation of Confidence in Perceptual Decision-Making "}],"uid":"27707","created_gmt":"2026-02-16 18:19:46","changed_gmt":"2026-02-16 18:22:49","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2026-02-26T12:30:48-05:00","event_time_end":"2026-02-26T14:30:00-05:00","event_time_end_last":"2026-02-26T14:30:00-05:00","gmt_time_start":"2026-02-26 17:30:48","gmt_time_end":"2026-02-26 19:30:00","gmt_time_end_last":"2026-02-26 19:30:00","rrule":null,"timezone":"America\/New_York"},"location":"ZOOM","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"102851","name":"Phd proposal"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}