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Simulated forward and backward self motion, based on realistic parameters, causes strong motion induced blindness

View ORCID ProfileVictoria Thomas, Matthew Davidson, Parisa Zakavi, Naotsugu Tsuchiya, Jeroen van Boxtel
doi: https://doi.org/10.1101/057323
Victoria Thomas
1School of Psychological Sciences and Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Clayton 3800 VIC, Australia
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Matthew Davidson
1School of Psychological Sciences and Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Clayton 3800 VIC, Australia
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Parisa Zakavi
2Monash Biomedical Imaging, Monash University, Melbourne, Victoria, Australia
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Naotsugu Tsuchiya
1School of Psychological Sciences and Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Clayton 3800 VIC, Australia
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Jeroen van Boxtel
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ABSTRACT

Motion Induced Blindness (MIB) is a well-established visual phenomenon whereby highly salient targets disappear when viewed against a moving background mask. No research has yet explored whether contracting and expanding optic flow can also trigger target disappearance. We explored MIB using mask speeds corresponding to driving at 35, 50, 65 and 80 km/h in simulated forward (expansion) and backward (contraction) motion as well as 2-D radial movement, random, and static mask motion types. Participants (n = 18) viewed MIB targets against masks with different movement types, speed, and target locations. To understand the relationship between saccades, pupil response and perceptual disappearance, we ran two additional eye-tracking experiments (n = 19). Target disappearance increased significantly with faster mask speeds and upper visual field target presentation. Simulated optic flow and 2-D radial movement caused comparable disappearance, and all moving masks caused significantly more disappearance than a static mask. Saccades could not entirely account for differences between conditions, suggesting that self-motion optic flow does cause MIB in an artificial setting. Pupil analyses implied that MIB disappearance induced by optic flow is not subjectively salient, potentially explaining why MIB is not noticed during driving. Potential implications of MIB for driving safety and Head-Up-Display (HUD) technologies are discussed.

Footnotes

  • ↵* victoria.thomas85{at}gmail.com

  • ↵** j.j.a.vanboxtel{at}gmail.com

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-ND 4.0 International license.
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Posted May 27, 2017.
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Simulated forward and backward self motion, based on realistic parameters, causes strong motion induced blindness
Victoria Thomas, Matthew Davidson, Parisa Zakavi, Naotsugu Tsuchiya, Jeroen van Boxtel
bioRxiv 057323; doi: https://doi.org/10.1101/057323
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Simulated forward and backward self motion, based on realistic parameters, causes strong motion induced blindness
Victoria Thomas, Matthew Davidson, Parisa Zakavi, Naotsugu Tsuchiya, Jeroen van Boxtel
bioRxiv 057323; doi: https://doi.org/10.1101/057323

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