Final answer:
The method in question refers to a neurological examination technique known as double simultaneous stimulation, which is used for assessing sensory perception and highlighting potential damage within the central nervous system, particularly the parietal lobe.
Step-by-step explanation:
The method described in the question is part of sensory function assessment within the field of neurological examination or medicine, more specifically examining somatosensory integration and perception. This trial-based stimulus preference assessment looks at the ability of a patient to perceive stimuli when presented on both sides of the body simultaneously, an evaluative process known as double simultaneous stimulation. When a stimulus, such as cotton tips, is applied to symmetrical positions, the patient's ability to perceive them can indicate the integrity of the sensory pathways and the parietal cortex, which is responsible for high-level processing and integration of sensory information. Particularly, if the perception is absent on one side, this could signal potential damage to the contralateral posterior parietal lobe. The assessment can help in differentiating between lesions of the central nervous system pathways, such as the dorsal column pathway, versus cortical deficits. Sensory testing procedures like two-point discrimination, stereognosis, and graphesthesia are essential components of a comprehensive mental status exam aimed at assessing parietal lobe functions and somatosensory discrimination.