RM, a Patient with Balint's Syndrome, Reported Illusory Conjunctions on 23

Multiple Choice

 R.M., a patient with Balint's syndrome, reported illusory conjunctions on 23% of the trials _____.

A) only if the two stimuli were presented for less than 1 second
B) only if the two stimuli were presented for less than 2 seconds
C) if he was told to attend only to the first stimulus
D) even if he was presented the two stimuli for 10 seconds