Patients with Extinction Are Unable to Detect a Visual Stimulus

Multiple Choice

Patients with extinction are unable to detect a visual stimulus presented on the contralesional side of space if

A) the stimulus is presented alone in the visual field.
B) this stimulus is presented at the same time as a stimulus on the ipsilesional side of the visual field.
C) there is no cue that precedes the stimulus.
D) the stimulus is presented with another at a more lateral position in the contralesional visual field.