20 agosto 2009

Ilusiones ópticas

Hoy descubrí que existe un concurso de illusiones ópticas de un centro neurológico. Algunas de los ganadores están increíbles.

Algunos aquí:
Un ejemplo:

Instrucciones:
Fixate any of the points above and shift your attention to one disk or other without moving your eyes. The attended disk appears to change brightness.
Explicación:
We believe that this happens because attention biases figure formation such that filling-in happens differently within the attended region than in the unattended region. In particular, the features from the overlap region spread within the boundaries of the attended figure, and not within the boundaries of the unattended region. This happens only for bistable transparent surfaces because only then is it ambiguous over which surface or layer the visual system should carry out the filling-in operation.



Estoy contenta porque hoy por la noche... ¡improluchas!
Mañana les cuento.

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