{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T05:56:07Z","timestamp":1788328567132,"version":"build-2803163510"},"reference-count":29,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T00:00:00Z","timestamp":1775001600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"DOI":"10.13039\/100000053","name":"National Eye Institute","doi-asserted-by":"publisher","award":["R01 EY29724"],"award-info":[{"award-number":["R01 EY29724"]}],"id":[{"id":"10.13039\/100000053","id-type":"DOI","asserted-by":"publisher"}]},{"name":"the Facility for Education and Research in Neuroscience (FERN) Education Grant"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,4,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Parietal cortex is thought to support visually guided actions, but whether it contains distinct regions specialized for different actions\u2014such as navigation, reaching, and grasping\u2014remains unknown. Prior work implicates the superior parietal lobule (SPL) in navigation and the superior parietal occipital cortex (SPOC) in reaching and grasping, yet whether these are truly dissociable is unclear. We addressed this using fMRI in adults. Participants viewed four stimulus types: Dynamic Scenes (first-person motion through scenes), Static Scenes (static images from these movies), Contextual Reaching and Grasping (first-person reaching and grasping on a scene background), and Isolated Reaching and Grasping (reaching and grasping actions on a black background). A double dissociation emerged: SPL responded significantly more to Dynamic than Static Scenes\u2014consistent with its role in visually-guided navigation\u2014and, critically, more to Dynamic Scenes than either reaching and grasping condition. By contrast, SPOC responded significantly more to both reaching and grasping conditions than to either scene condition. Resting-state functional connectivity further supported this double dissociation: SPL showed stronger connectivity with \u201cleg-motor\u201d than \u201carm-motor\u201d cortex, whereas SPOC showed the opposite pattern. These findings reveal two distinct parietal systems: SPL for visually-guided navigation and SPOC for visually-guided reaching and grasping\u2014clarifying how the parietal cortex organizes visually guided action.<\/jats:p>","DOI":"10.1093\/cercor\/bhag050","type":"journal-article","created":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T11:38:34Z","timestamp":1774957114000},"source":"Crossref","is-referenced-by-count":3,"title":["Dissociable systems for visually guided navigation versus reaching and grasping in human parietal cortex"],"prefix":"10.1093","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-4296-9120","authenticated-orcid":false,"given":"Hee Kyung","family":"Yoon","sequence":"first","affiliation":[{"name":"Department of Psychology, Emory University , 36 Eagle Row, Atlanta, GA, 30322 ,","place":["United 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