An fMRI Study of Parietal Cortex Involvement in the Visual Guidance of Locomotion.
Locomoting through the environment typically involves anticipating impending changes in heading trajectory in addition to maintaining the current direction of travel. We explored the neural systems involved in the “far road” and “near road” mechanisms proposed by Land and Horwood (1995) using simula...
| Publicado en: | Journal of Experimental Psychology. Human Perception & Performance Vol. 36; no. 6; pp. 1495 - 1508 |
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| Autores principales: | , , , |
| Formato: | Artículo |
| Publicado: |
American Psychological Association
December 2010
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=511540893&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 511540893 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00961523 EPH jtl: Journal of Experimental Psychology. Human Perception & Performance issn: 00961523 maglogo: N pubinfo: dt: December 2010 vid: 36 iid: 6 pid: 34 pub: American Psychological Association artinfo: ui: 511540893 10.1037/a0018728 ppf: 1495 ppct: 13 formats: tig: atl: An fMRI Study of Parietal Cortex Involvement in the Visual Guidance of Locomotion. aug: au: Billington, Jac Field, David T. Wilkie, Richard M. Wann, John P. su: Mental orientation Parietal lobe Brain function localization Human locomotion Visual perception sug: subj: Mental orientation Parietal lobe Brain function localization Human locomotion Visual perception ab: Locomoting through the environment typically involves anticipating impending changes in heading trajectory in addition to maintaining the current direction of travel. We explored the neural systems involved in the “far road” and “near road” mechanisms proposed by Land and Horwood (1995) using simulated forward or backward travel where participants were required to gauge their current direction of travel (rather than directly control it). During forward egomotion, the distant road edges provided future path information, which participants used to improve their heading judgments. During backward egomotion, the road edges did not enhance performance because they no longer provided prospective information. This behavioral dissociation was reflected at the neural level, where only simulated forward travel increased activation in a region of the superior parietal lobe and the medial intraparietal sulcus. Providing only near road information during a forward heading judgment task resulted in activation in the motion complex. We propose a complementary role for the posterior parietal cortex and motion complex in detecting future path information and maintaining current lane positioning, respectively. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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