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Lost in Space: graviceptive biasing of visual perception

Ferré, Elisa Raffaella und Frett, Timo und Acedo, Javier und Haggard, Patrick (2017) Lost in Space: graviceptive biasing of visual perception. In: British Neuroscience Association BNA 2017 Abstract Book. British Neuroscience Association: Festival of Neuroscience 2017, 2017-04-10 - 2017-04-13, Birmingham, UK.

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Offizielle URL: https://www.bna.org.uk/static/uploads/resources/BNA2017_ABSTRACT_BOOK_SAGE_FINAL.pdf

Kurzfassung

Our brain receives a series of sensory snapshots of the external world, which it must integrate to provide a description of the Scenes around us. Vestibular inputs monitor changes in the position of the body relative to the environment. Here we tested thehypothesis that the vestibular system contributes to bridging the gap between successive visual snapshots of the external world. Accordingly, if gravitational signals provided by the vestibular organs cannot be aligned with those from vision, altered perceptual experiences may occur. This might underlie perceptual errors reported by pilots and astronauts exposed to altered gravitational forces. We investigated the contribution of vestibular-gravitational signals to the process of updating perception of a series of visual scenes. Ten participants were seated facing outwards on a short arm human centrifuge (SAHC) platform, which simulated 1 +Gz artificial gravity for ten minutes at head level. A visual judgement task was performed at normal gravity baseline and during 1 +Gz artificial gravity, in counterbalanced order. An environmental scene (Scene A) was followed after a short delay by a second scene (B) involving slight perspectival modification of Scene A. The scenes differed either in angular perspective (as if the participant had turned leftwards or rightwards during the delay) or in translational perspective (as if the participant had moved forward or backwards). Participants judged whether the implied viewpoint change between the first and second scene corresponded to a left/right-ward rotation (angular perspective), or to an approach/retreat (translational perspective). Artificial gravity influenced the perceived relation between the visual images: participants judged the second scene as significantly closer during 1 +Gz artificial gravity compared to a normal gravity baseline (t(9)=2.568, p=0.030). No differences were found in judgements of angular perspective. This dissociation rules out non-specific effects of artificial gravity or centrifugation which cannot readily explain this specificity. Our results support a vestibular-driven updating process in which gravity signals are computed to provide a dynamic description of the spatial position of the body relative to the external environment.

elib-URL des Eintrags:https://elib.dlr.de/111910/
Dokumentart:Konferenzbeitrag (Vortrag, Poster)
Titel:Lost in Space: graviceptive biasing of visual perception
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Ferré, Elisa RaffaellaDepartment of Psychology Royal Holloway University of LondonNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Frett, TimoTimo.Frett (at) dlr.dehttps://orcid.org/0000-0002-5572-1177NICHT SPEZIFIZIERT
Acedo, JavierStarlab BarcelonaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Haggard, PatrickDepartment of Psychology Royal Holloway University of LondonNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:12 April 2017
Erschienen in:British Neuroscience Association BNA 2017 Abstract Book
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Artificial Gravity, Vestibular, Centrifuge
Veranstaltungstitel:British Neuroscience Association: Festival of Neuroscience 2017
Veranstaltungsort:Birmingham, UK
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:10 April 2017
Veranstaltungsende:13 April 2017
Veranstalter :British Neuroscience Association
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Forschung unter Weltraumbedingungen
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R FR - Forschung unter Weltraumbedingungen
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Operationelle Forschung Kurzarmzentrifuge (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Luft- und Raumfahrtmedizin > Biomedizinische Forschung
Hinterlegt von: Frett, Timo
Hinterlegt am:20 Apr 2017 12:28
Letzte Änderung:24 Apr 2024 20:16

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