The Central Bias in Day-to-Day Viewing

Eye tracking studies have suggested that, when viewing images centrally presented on a computer screen, observers tend to fixate the middle of the image. This so-called `central bias' was later also observed in mobile eye tracking during outdoors navigation, where observers were found to fixate the middle of the head-centered video image. It is unclear, however, whether the extension of the central bias to mobile eye tracking in outdoors navigation may have been due to the relatively long viewing distances towards objects in this task and the constant turning of the body in the direction of motion, both of which may have reduced the need for large amplitude eye movements. To examine whether the central bias in day-to-day viewing is related to the viewing distances involved, we here compare eye movements in three tasks (indoors navigation, tea making, and card sorting), each associated with interactions with objects at different viewing distances. Analysis of gaze positions showed a central bias for all three tasks that was independent of the task performed. These results confirm earlier observations of the central bias in mobile eye tracking data, and suggest that differences in the typical viewing distance during different tasks have little effect on the bias. The results could have interesting technological applications, in which the bias is used to estimate the direction of gaze from head-centered video images, such as those obtained from wearable technology.

[1]  T. Foulsham,et al.  Gaze behaviour in the natural environment: Eye movements in video versus the real world , 2010 .

[2]  Thomas Martinetz,et al.  Variability of eye movements when viewing dynamic natural scenes. , 2010, Journal of vision.

[3]  Michael L. Mack,et al.  Viewing task influences eye movement control during active scene perception. , 2009, Journal of vision.

[4]  L. Itti,et al.  Quantifying center bias of observers in free viewing of dynamic natural scenes. , 2009, Journal of vision.

[5]  T. Foulsham,et al.  The where, what and when of gaze allocation in the lab and the natural environment , 2011, Vision Research.

[6]  Frank H Durgin,et al.  Upper-left gaze bias reveals competing search strategies in a reverse Stroop task. , 2008, Acta psychologica.

[7]  Tom Foulsham,et al.  Asymmetries in the direction of saccades during perception of scenes and fractals: Effects of image type and image features , 2010, Vision Research.

[8]  Benjamin W Tatler,et al.  The central fixation bias in scene viewing: selecting an optimal viewing position independently of motor biases and image feature distributions. , 2007, Journal of vision.

[9]  D. I. Perrett,et al.  Are the perceptual biases found in chimeric face processing reflected in eye-movement patterns? , 2005, Neuropsychologia.

[10]  Derrick J. Parkhurst,et al.  Modeling the role of salience in the allocation of overt visual attention , 2002, Vision Research.

[11]  P. König,et al.  Gaze allocation in natural stimuli: Comparing free exploration to head-fixed viewing conditions , 2009 .

[12]  David N. Lee,et al.  Where we look when we steer , 1994, Nature.

[13]  Marianne A. DeAngelus,et al.  Top-down control of eye movements: Yarbus revisited , 2009 .

[14]  Thomas S. Huang,et al.  Human face detection in a complex background , 1994, Pattern Recognit..

[15]  Kun Guo,et al.  Consistent left gaze bias in processing different facial cues , 2012, Psychological research.

[16]  C. Koch,et al.  Computational modelling of visual attention , 2001, Nature Reviews Neuroscience.

[17]  Kari S. Kretch,et al.  Active vision in passive locomotion: real-world free viewing in infants and adults. , 2015, Developmental science.

[18]  J. Fuller,et al.  Head movement propensity , 2004, Experimental Brain Research.

[19]  Klaus J. Kirchberg,et al.  Robust Face Detection Using the Hausdorff Distance , 2001, AVBPA.

[20]  F. Vitu,et al.  Eye movements in reading isolated words: evidence for strong biases towards the center of the screen , 2004, Vision Research.

[21]  Michael F. Land,et al.  From eye movements to actions: how batsmen hit the ball , 2000, Nature Neuroscience.

[22]  A. L. Yarbus.  Eye Movements During Perception of Complex Objects , 1967 .

[23]  Christof Koch,et al.  A Model of Saliency-Based Visual Attention for Rapid Scene Analysis , 2009 .

[24]  Frouke Hermens,et al.  Information extraction from shadowed regions in images: An eye movement study , 2015, Vision Research.

[25]  Roland J. Baddeley,et al.  The nature of the visual representations involved in eye movements when walking down the street , 2009 .

[26]  Daniel Mills,et al.  Left gaze bias in humans, rhesus monkeys and domestic dogs , 2009, Animal Cognition.

[27]  J. Pelz,et al.  Oculomotor behavior and perceptual strategies in complex tasks , 2001, Vision Research.

[28]  David Swapp,et al.  Where do we look when we steer and does it matter , 2010 .

[29]  Hanghang Tong,et al.  Blur detection for digital images using wavelet transform , 2004, 2004 IEEE International Conference on Multimedia and Expo (ICME) (IEEE Cat. No.04TH8763).

[30]  T. Foulsham,et al.  Leftward biases in picture scanning and line bisection: A gaze-contingent window study , 2013, Vision Research.

[31]  B. Tatler,et al.  Deriving an appropriate baseline for describing fixation behaviour , 2014, Vision Research.

[32]  Kaitlin E W Laidlaw,et al.  Potential social interactions are important to social attention , 2011, Proceedings of the National Academy of Sciences.

[33]  S. Chokron,et al.  Reading habits and line bisection: a developmental approach. , 1995, Brain research. Cognitive brain research.

[34]  P Reinagel,et al.  Natural scene statistics at the centre of gaze. , 1999, Network.

[35]  Chen Yu,et al.  Understanding embodied visual attention in child-parent interaction , 2013, 2013 IEEE Third Joint International Conference on Development and Learning and Epigenetic Robotics (ICDL).

[36]  M. Jeannerod,et al.  The coordination of eye, head, and arm movements during reaching at a single visual target , 2004, Experimental Brain Research.

[37]  Peter König,et al.  Salient features in gaze-aligned recordings of human visual input during free exploration of natural environments. , 2008, Journal of vision.

[38]  Anil K. Jain,et al.  Face Detection in Color Images , 2002, IEEE Trans. Pattern Anal. Mach. Intell..

[39]  B. Tatler,et al.  The prominence of behavioural biases in eye guidance , 2009 .

[40]  B. Tatler,et al.  Yarbus, eye movements, and vision , 2010, i-Perception.

[41]  Thomas M. Spalek,et al.  The Left-to-Right Bias in Inhibition of Return Is Due to the Direction of Reading , 2005, Psychological science.