Whereas the strength of audio-visual speech illusions varied as a direct function of maturational level, performance on non-speech illusory tasks appeared to be homogeneous across all ages.
The characteristics of the stimuli used in the Illusory Flash effect task and Fusion effect were similar to those used in Shams et al. [8], [13].
In one case, Jung showed that a patient who for 50 years had been fixated on the apparently meaningless task of making illusory shoes, had been abandoned by a lover who was a cobbler.
The McGurk effect, the Illusory Flash effect and the Fusion effect tasks were performed in a single session, in counterbalanced order.
The economically illusory gains of finance distract people from more valuable tasks.
An illusory conjunction occurred if the subject reported a letter of the secondary task with a color that actually belonged to a different letter.
Moreover, in a change-detection task, a feature change in a single attribute frequently caused an illusory perception of change in another attribute, suggesting that multiple pairs of attributes are stored in memory.
Schizophrenic subjects also perform better than controls on this task (Shergill et al., 2005), as they do in other illusory perception paradigms (Dakin et al., 2005), because they are unable to generate predictions that will suppress proprioceptive prediction errors; FMSS patients' abnormal priors may lead to a similar overweighting of sensory data.
It is also not a result of misbinding of individual features or illusory conjunctions [2], [18], which can be observed in typical rapid serial visual presentation tasks, because the target was barely perceived in the control condition.
As could be expected in such an easy task, accuracy was almost perfect with correct response proportions of 99% (±2) for the illusory square and of 100% (±1) for the control figure.
