. Harrison, Moreover,"the"present"study" demonstrated"that"the"effects"of"background"visual"complexity"and"motion"on"the"performance"are" additive"for"one"of"the"backgrounds"(Experiment"1)"and"multiplicative"for"the"other"one, 2007.

. However, give"exactly"the"same" resultsThe"impact"of"background"complexity"on"participants'"performance"was"different"according" to"the"background"that"was"usedExperiment"1,"the"simple"effect"of"background"complexity"was" significantthe"simple"effect"of"background"complexity"was"not"significant,"but"there" was"a"significant"interaction"with"background"motion"such"that"background"complexity"had"a" significant"impact"on"performance"when"the"background"was"moving

. Hooge and . Wertheim, Further"experiments"are"necessary"to"explain"to"what"extent" these"specific"lowWlevel"features"can"influence"the"perception"and"use"of"objects"superimposed"on"a" structured"background

. French, Ministryand"followed"in"the"frame"of"this

. Asher, TolhurstRegional"effects"of"clutter"on" human"target"detection"performance, J, vol.1325, issue.5, pp.1-15, 2013.

. Beck, &"TraftonMeasuring"search"efficiency"in"complex"visual" search"tasks:"Global"and"local"clutter, Journal#of#Experimental#Psychology:#Applied, vol.16, pp.238-25010, 1037.

. Berger, Lischke&"HöppnerGazeAlyze:"a"MATLAB"toolbox"for"the" 20" " analysis"of"eye"movement"data, pp.404-41910, 2012.

". L. Caroux, Impact of the motion and visual complexity of the background on players' performance in video game-like displays, Ergonomics, vol.63, issue.12, pp.1863-1876, 2013.
DOI : 10.1007/s11257-010-9078-0

URL : https://hal.archives-ouvertes.fr/hal-01470744

. De and . Vries, HoogeWertheimBackground,"an"important" factor"in"visual"search, pp.128-138, 2013.

. Harrison, Multisensory"integration"with"a"headW mounted"display:"Background"visual"motion"and"sound"motion, J, vol.52, pp.78-9110, 1177.

. Henderson, The"influence"of"clutter"on"realWworld"scene" search:"Evidence"from"search"efficiency"and"eye"movements, pp.1-8, 2009.

. Honda, Visual Mislocalisation Induced by Translational and Radial Background Motion, Perception, vol.24, issue.8, pp.935-944, 2001.
DOI : 10.1068/p3132

. Ilg, Slow"eye"movementsProgress#in#Neurobiology, pp.293-329, 1997.

". L. Itti, A"saliencyWbased"search"mechanism"for"overt"and"covert"shifts"of"visual" attention, pp.401489-1506, 2000.

". L. Jie, Video"game"design"using"an"eyeWmovementWdependent"model"of"visual" attentionACM#Transactions#on#Multimedia#Computing#Communications#and#Applications, 2008.

". A. Kaminiarz, BremmerLocalization"of"visual"targets"during"optokinetic" eye"movements, pp.869-878, 2007.

". J. Kim, Eccentric gaze dynamics enhance vection in depth, Journal of Vision, vol.10, issue.12, pp.1-11, 2010.
DOI : 10.1167/10.12.7

. Neider, Cutting through the clutter: Searching for targets in evolving complex scenes, Journal of Vision, vol.11, issue.14, pp.1-16, 2011.
DOI : 10.1167/11.14.7

. Rieckee, AvraamidesVon"Der"Heyde Cognitive"factors"can"influence"selfWmotion"perception"(vection)"in"virtual"reality, ACM# Transactions#on#Applied#Perception, vol.3, pp.194-216, 2006.

". A. Tozzi, The effect of optokinetic nystagmus on the perceived position of briefly flashed targets, Vision Research, vol.47, issue.6, pp.861-868, 2007.
DOI : 10.1016/j.visres.2006.10.022

. Trutoiu, Circular, linear, and curvilinear vection in a large-screen virtual environment with floor projection, Computers & Graphics, vol.33, issue.1, pp.47-58, 2009.
DOI : 10.1016/j.cag.2008.11.008

. Waespe, Slow eye movements induced by apparent target motion in monkey, Experimental Brain Research, vol.67, issue.2, pp.433-43510, 1987.
DOI : 10.1007/BF00248564

. Wolfe, Guided"Search"2.0:"A"revised"model"of"visual"search, Psychonomic#Bulletin#&# Review, issue.1, pp.202-238, 1994.

. Wolfes and . Butcher, HorowitzSegmentation"of"objects" from"backgrounds"in"visual"search"tasks, J, vol.42, issue.23, pp.2985-300410, 2002.

*. Horizontal and *. Static, 632" 49" 631" 53" 626" 46" Moving"background" 642" 41" 658" 43" 674" 57" Vertical*coordinate*(Y)* Static"background" 494" 47" 476" 51" 477" 50" Moving"background" 489

*. Horizontal and *. Static, 64" 628" 60" Moving"background" 652" 56" 663" 54" 648" 58" Vertical*coordinate*(Y)* Static"background" 470" 77" 498" 53" 479" 59" Moving"background" 480" 52" 480" 63" 491" 51