Credit: CLOUDS HILL IMAGING LTD/SCIENCE PHOTO LIBRARY

Caption: Points of light static and in motion, showing how the human visual system recognises shapes and movement from limited information. This clip is based on the patch light system developed by the Swedish psychophysicist Gunnar Johansson in the early 1970s. When static the lights appear to have no connection to each other. With some lights attached to a person's joints, the relationship between them becomes immediately obvious when they move, but the effect vanishes as soon as the lights stop moving.

Release details: Model release not required. Property release not required.

Keywords: assumption, black and white, black background, dot, dots, educational, exercising, gestalt, gunnar johansson, human, illusion, information, joint, joints, jumping, jumps, light, lights, model, monochrome, motion, moves, moving, optical, patch, patch-light, pattern, perception, psychology, psychophysics, recognising, recognition, recognizing, rigidity, sense, sight, star jump, stimuli, stimulus, system, trick, vision, visual

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Motion perception using points of light

K005/8398 Rights Managed

Downloadable master

Duration: 00:00:16.09

Frame size: 768x576

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 9.6M

Original

Capture format: M2

Frame size: 720x576

Codec: DV - PAL

Interlaced: Yes

Please contact Science Photo Library if you require the original, or other formats.

 

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