Final answer:
To gather info related to left/right-handed polarization problems when identifying a symptom, you can use the double simultaneous stimulation technique.
Step-by-step explanation:
When identifying a symptom related to left/right-handed polarization problems, you can use the double simultaneous stimulation technique. This involves touching two stimuli, such as cotton tips, to the same position on both sides of the body. If one side is not perceived, it may indicate damage to the contralateral posterior parietal lobe. This technique helps assess the laterality of perception and can provide valuable information about potential issues with polarization problems.