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Friday 10 February 2012

Info Post
Below are demonstrations of silencing, described in:
  • Suchow, J.W., & Alvarez, G.A. (2011). Motion silences awareness of visual change. Current Biology. doi:10.1016/j.cub.2010.12.019

Instructions: Keep your eyes fixed on the small white mark in the center. At first, the ring is stationary and it's easy to tell that the dots are changing. A few seconds later, the ring begins to rotate and the dots suddenly appear to stop changing.

But play the movie again, this time looking directly at one of the dots and following it as the ring rotates. You will see that, in fact, the dots had been changing the whole time, even during the rotation—you just didn't notice it. This failure to detect that moving objects are changing is silencing.



The full set of demos, and a reprint of the paper, is available at Vision Lab Harvard



  • The spiral of silence is a political science and mass communication theory propounded by the German political scientist Elisabeth Noelle-Neumann. The theory asserts that a person is less likely to voice an opinion on a topic if one feels that one is in the minority for fear of reprisal or isolation from the majority.

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