Aunque no lo crean, la espiral verde y la azul son del mismo color

Como lo dice Eduardo Arcos en ALT1040, esta es de las mejores ilusiones que he visto.

La razón por la que se ven como diferentes colores es que nuestro cerebro juzga el color de un objeto no de forma absoluta sino comparándolo con los colores que le rodean. Las bandas espirales más delgadas que van en sentido contrario no son de un color uniforme como parecería a primera vista, sino que van cambiando según pasan por la zona de las espirales «azul» o «verde».

Para los que les de pereza abrir Photoshop, aqui les dejo la comparación de colores (el gráfico es horrible, pero la idea es esa)

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Visto en Microsiervos

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From Wikipedia:

The McGurk effect is a perceptual phenomenon which demonstrates an interaction between hearing and vision in speech perception. It suggests that speech perception is multimodal, that is, that it involves information from more than one sensory modality. The McGurk effect is sometimes called the McGurk-MacDonald effect. It was first described in a paper by McGurk and MacDonald (1976).

This effect may be experienced when a video of one phoneme’s production is dubbed with a sound-recording of a different phoneme being spoken. Often, the perceived phoneme is a third, intermediate phoneme. For example, a visual /ga/ combined with a heard /ba/ is often heard as /da/. Further research has shown that it can exist throughout whole sentences. The effect is very robust; that is, knowledge about it seems to have little effect on one’s perception of it. This is different from certain optical illusions, which break down once one ‘sees through’ them.

Study into the McGurk effect is being used to produce more accurate speech recognition programs by making use of a video camera and lip reading software. It has also been examined in relation to witness testimony; Wareham & Wright’s 2005 study showed that inconsistent visual information can change the perception of spoken utterances, suggesting that the McGurk effect may have many influences in everyday perception.

In this video it is possible for most individuals to experience the McGurk effect.

We also recommend this perceptual phenomenon

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No les voy a adelantar, pero tranquilos, no es de esos @#$@#$ videos de sustos.

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