Extinction on double simultaneous stimulation and ignoring stimuli from the left side describe which syndrome?

• A. Constructional apraxia
• B. Dressing apraxia
• C. Hemi-neglect/hemi-inattention
• D. Gait apraxia

Answer: (C)

Hemispatial neglect, especially the left-sided neglect that follows right parietal lobe damage, is being described. The extinction on double simultaneous stimulation means the person can detect a stimulus on the left when presented alone, but when a stimuli on the right is presented at the same time, the left stimulus is not reported. This reflects a failure of attention to contralesional space, not a primary sensory loss. Clinically you may also see personal neglect (ignoring the left side of the body) or neglect of the left side of the environment. The other options describe apraxias or construction issues, which are different phenomena involving motor planning or spatial organization, not the attentional inattention to left space demonstrated by extinction and neglect.