Reality in a sphere

VR for social attention research

Understanding Vision 2021

Jonas D. Großekathöfer

24. June 2021

Hi! 👋

I’m Jonas

PhD Student at the University of Würzburg (Germany)

Research on social attention in a wide variety of environments

Outline

Aim of the Talk

  1. VR has great potential for social attention research
  2. It might be easier then you think to start with VR in your research

Challenges for social attention research

A lot that we know about …

  1. Cognitive aspects of gaze following
  2. Preferential processing of social aspects

… does not generalize beyond the laboratory!

foulsham2011_head.png

foulsham2011_fig1.png

foulsham2011_fig4.png

foulsham2011_fig8b.png

rubo2019_head.png

rubo2019_fig2.png

Differences between the laboratory and the real world

  1. distribution of gaze
  2. allocation of social attention
  3. influence of personality traits

No naturalistic stimuli in the laboratory

  1. Rich, dynamic, multimodal
  2. Contextual embedded
  3. Unrestricted head and body movement
  4. Free attentional flow
  5. (Social) interaction

Solution: Virtual reality?

  • What is virtual reality?
  • How can it help?
  • How can it be implemented?

What is virtual reality?

a simulated experience that can be similar to or completely different from the real world

How is it related to human experience?

lee2004_fig1_no-vr.png

How is it related to human experience?

lee2004_fig1.png

How can it help?

Naturalistic stimuli or experimental control?

blascovich2002_fig1a.png

How can it help?

Naturalistic stimuli and experimental control!

blascovich2002_fig1.png

Naturalistic stimuli with VR

  1. Rich, dynamic, multimodal
  2. Contextual embedded
  3. Unrestricted head and body movement
  4. Free attentional flow
  5. (Social) interaction

And VR enables all of them!

Technical implementation

hmd.png

HMD (Head-mounted Display)

hmd_schematic.png

Pitch-Yaw-Roll-1.jpg

3D scenes

3d_lea_Safety_1.png

Spherical scenes

gopro-omni_rs.jpg blender-sphere_rs.png

Disney’s “The Jungle Book”

Through Mogli’s Eyes

Disadvantages of spherical scenes

  • No interactions
  • Physical limitations
  • No stereoscopy
    • Monocular stimuli

Advantages of spherical scenes

  • Make VR accessible
    • easy and fast stimulus preparation
  • very naturalistic stimuli
    • including photorealism

VR for social attention research

Reality in a sphere: A direct comparison of social attention in the laboratory and the real world

Motivation

  1. Suitability of spherical videos for investigating social attention
  2. Better understanding of the boundaries of typical laboratory settings

Typical laboratory settings

  • Restrict head and body movement
  • No free decision where to attend
  • Introduction of additional tasks in the real world

What did we do?

  1. Measured eye movements of 44 participants
    • in Real environments physically at the location
    • in Virtual environments within the laboratory, playing videos of the locations in an HMD
  2. Manually coded fixations into person, object, background

Locations

Spherical videos

Spherical videos

Eyetracking

Eyetracking

Results

🎯

General findings

model1-plot.png

Consistency of fixations

heat-plot_1st.png

Consistency of fixations

heat-plot.png

Distribution of fixations

density-plot_1st.png

Distribution of fixations

density-plot.png

Influence of Pedestrians

model4-plot_1st.png

Influence of Pedestrians

model4-plot.png

Conclusion

Photorealistic representation of the real world
Free decision where to attend in the laboratory
Free head and body movement in the laboratory

Conclusion

  1. Reduced social attention in the real environment
  2. Social attention is more stable across locations in the virtual environment
  3. Gaze is more concentrated and above a relative horizon in the virtual environment

Limitations

No interaction in the laboratory
No body representation

All in all

  • Unmatched close and more systematic approximation of the real world within the laboratory
  • Valid and reliable measurements of social attention in the laboratory remain challenging

Wrap up

  • spherical scenes make VR comparatively easy to access for social attention research
  • solves some problems, when embeddedness, free attentional flow, photorealism is important
  • does not solve every problem, interaction and body representation remain a hard problem

Future directions

  • improve multimodality
  • explore possibilities with orchestrated environments
  • interactive location changing
  • enable social interactions (up to a certain degree)
  • think about clinical applications

Thank you for your attention

🙂

References

Literature:

Online resources:

Created by Jonas Großekathöfer.