Online Experiments

• Guess the Sex
• Can you tell the difference?

Watch short point-light animations of men and women performing different actions and see if you can guess their sex!





• BMLevolution
• Help us evolve a new walker!

Observers can determine the facing direction of a walker even in the absence of structural information. What is it in the motions of the individual dots that carry the directional information? We investigate this question in our new evolution experiment. To participate, click here .

Analysis and Synthesis

• BMLscrambled
• Direction from scrambled motion
  This animation contains stimuli that demonstrate our ability to derive information about the direction from scrambled biological motion. If the stimulus is inverted performance declines to chance level.





• BMLwalker
• Biological motion contains information about sex, weight, emotional state and personality traits
  Based on the walking patterns of 100 individual walkers, we derive axes that reflect how walking changes as a function of biological and psychological attributes.
  






• BMLgender
• Gender classification: analysis and synthesis
  Analysis of sex-specific differences in walking style reveals that the dynamic part of the motion contains more information about gender than motion-mediated structural cues.
  





• BMLrating
• Derive your own attributes
  This demo allows you to derive you own axis in motion space. You will be prompt to input whatever attribute you are intersted in.
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• BMLrunner
• Men and women running
  This demonstration is similar to the one above, but uses data from running 50 men and 50 women running. As above, sex specific differences can be found in body structure and in the dynamics of the movement.

Size and Speed

• BMLdog
• Biological motion contains information about size
  This demo illustrates the stimuli used in two experiments in which observers had to estimate the perceived size of quadruped animals walking with different speeds. Results reveiled that our visual system "knows" about the gravity-mediated relation between spatial and temporal parameters.

Samples of virtual Pigeon

• Virtual pigeon (movie)
• Computer animation of a pigeon that is realistic enough to elicite natural courtship behaviour in a life "partner".






• Real pigeon response (movie)
• This movie shows how a male bird responds to the virtual pigeon.

Facial Animation

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• Facial motion (movie)
  Sample of the stimuli used to investigate issues on viewpoint generalisation, gender discrimination and person identification from facial motion.