Neurological Screening Practice Test

Recognizing writing traced on the palm tests higher-level processing in the parietal lobe to interpret tactile information and identify symbols. This specific ability is called graphesthesia—the patient feels the pattern or shape drawn on the skin and must name what it is without looking. It requires integration of touch with cortical interpretation, not just sensation from the skin.

The other tests target different functions. The Romberg test assesses raw proprioception and balance, relying on dorsal columns and vestibular input rather than recognizing symbols. The Tinel test checks for nerve irritation by tapping a nerve and eliciting tingling, a peripheral nerve issue. The Phalen test similarly screens for carpal tunnel symptoms by provocative positioning of the wrist, again focusing on peripheral nerve function.