Sie sind hier: Startseite Unser Institut Abteilungen Entwicklungs- und Pädagogische Psychologie Mitarbeiterinnen und Mitarbeiter Priv.-Doz. Dr. Michael Kavšek Rotary Motion Impairs Attention to Color Change in 4-Month-Old Infants

Rotary Motion Impairs Attention to Color Change in 4-Month-Old Infants

Abstract


Continuous color changes of an array of elements appear to stop changing if the array undergoes a coherent motion. This silencing illusion has been demonstrated for adults by Suchow and Alvarez (2011a). The silencing illusion can be viewed at http://visionlab.harvard.edu/silencing. In order to clarify whether the mechanisms responsible for the illusory effect are present even at very young age, the present forced-choice preferential looking study examined 4-month-old infants’ sensitivity to silencing. Two experimental conditions were conducted. In the dynamic condition, infants were tested with two rotating rings of circular different-colored dots. In one of these rings, the dots continuously changed color, while in the other ring the dots did not change color (see animations a and b). In the static condition, the global rotary motion was eliminated from the targets (see animations c and d). Infants preferred looking at the color-changing target in the static but not in the dynamic condition: they attended to the color changes in the static condition, but failed to detect them in the dynamic condition. Silencing can hence be established in early infancy. A control group of adults also responded to the silencing phenomenon. This substantiates that the stimuli generate a robust illusory effect.
 

Animations shown in the dynamic condition. The participants were presented with two rings of different-colored dots, one in which all dots rotated coherently back and forth and continuously changed color and one in which the dots rotated coherently but did not change color.

a: left side: global motion – color change target; right side: global motion – no color change target
color change left dynamic

b: left side: global motion – no color change target; right side: global motion – color change target
color change right dynamic


Animations shown in the static condition. The participants were presented with two rings of dots, one in which the dots were stationary and continuously changed color and one in which the dots were stationary and did not change color.

c: left side: no motion – color change target; right side: no motion – no color change target
color change left static

d: right side: no motion – color change target; right side: no motion – no color change target
color change right static
 

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