Adolescents with Autism Spectrum Disorder (ASD) Spontaneously Attending to Real-World Scenes: Use of a Change Blindness Paradigm
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Change blindness is a perceptual phenomenon that occurs when a change in a visual stimulus is introduced and the observer does not notice it (Rensink 2002). A classically used paradigm presents flickering stimuli made of repeated sequences of a picture followed by a “masking” stimulus (e.g., blank screen), which is followed by the initial picture with a change. Our sensory system is able to automatically detect change between pictures when they are immediately contiguous, but detection becomes more effortful when they are separated by a mask for an interval exceeding the temporal limits of visible persistence (Shore et al. 2006). Intervals of more than 100 ms render detection challenging, even when changes are large. Due to the mask, which hinders automatic visual change detection processes, orientation of visual attention is guided by controlled mechanisms that reveal the way we prioritize information that enters working memory (Rensink 2002)....