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Sex bias in the influence of gravity on perception

Harris, Laurence and Felsner, Sandra and Jenkin, Michael and Herpers, Rainer and Noppe, Alexandra and Frett, Timo and Scherfgen, David (2018) Sex bias in the influence of gravity on perception. Vision Science Society, May 18 - May 23, 2018, Florida, US.

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Abstract

INTRO Females are influenced more than males by visual cues during many spatial orientation tasks; but females rely more heavily on gravitational cues during visual-vestibular conflict. Are there gender biases in the relative contributions of vision, gravity and the internal representation of the body to the perception of upright? And might any such biases be affected by low gravity? METHODS 16 participants (8 female) viewed a highly polarized visual scene tilted ±112° while lying supine on the European Space Agency’s short-arm human centrifuge. The centrifuge was rotated to simulate 24 logarithmically spaced g-levels along the long axis of the body (0.04-0.5g at ear-level). The perception of upright was measured using the Oriented Character Recognition Test (OCHART). OCHART uses the ambiguous symbol “p“ shown in different orientations. Participants decided whether it was a “p“ or a “d“ from which the perceptual upright (PU) can be calculated for each visual/gravity combination. The relative contribution of vision, gravity and the internal representation of the body were then calculated. Experiments were repeated while upright. RESULTS The relative contribution of vision on the PU was less in females compared to males (t=-18.48, p≤0.01). Females placed more emphasis on the gravity cue instead (f:28.4%, m:24.9%) while body weightings were constant (f:63.0%, m:63.2%). When upright (1g) in this and other studies (e.g., Barnett-Cowan et al. 2010, EJN, 31,1899) females placed more emphasis on vision in this task. CONCLUSIONS The shift in weight allocated by females to vision when in simulated low-gravity conditions, may be related to females’ response to other instances of visual-vestibular conflict. Why this is the case and at which point the perceptual change happens requires further research.

Item URL in elib:https://elib.dlr.de/120172/
Document Type:Conference or Workshop Item (Poster)
Title:Sex bias in the influence of gravity on perception
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Harris, LaurenceYork University Psychology, Toronto Ontario, CanadaUNSPECIFIED
Felsner, SandraUNSPECIFIEDUNSPECIFIED
Jenkin, MichaelYork University Computer Science and Engineering, Toronto Ontario, CanadaUNSPECIFIED
Herpers, RainerHochschule Bonn-Rhein-Sieg, Sankt Augustin, GermanyUNSPECIFIED
Noppe, AlexandraGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Cologne, GermanyUNSPECIFIED
Frett, TimoGerman Aerospace Center (DLR), Institute of Aerospace Medicine, Biomedical Science Support Center, Cologne, GermanyUNSPECIFIED
Scherfgen, DavidHochschule Bonn Rhein-Sieg, Sankt Augustin, GermanyUNSPECIFIED
Date:May 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Artificial Gravity, Perception, sex bias
Event Title:Vision Science Society
Event Location:Florida, US
Event Type:international Conference
Event Dates:May 18 - May 23, 2018
Organizer:VSS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Operationelle Forschung Kurzarmzentrifuge
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Gravitational Biology
Deposited By: Frett, Timo
Deposited On:05 Jun 2018 13:21
Last Modified:03 Jul 2018 13:50

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