Which test assesses coordination by extending the index finger to touch the nose and then the examiner's finger?

• A. FNF test / FTN test
• B. Gait
• C. DTRs
• D. CN

Answer: (A)

This test evaluates upper-limb coordination and cerebellar function by having the person extend the index finger and repeatedly touch their nose and then the examiner’s finger. The key idea is accuracy and precision of targeted, purposeful movements. A normal result shows smooth, accurate tracking between targets with minimal tremor. Abnormal findings include dysmetria (overshooting or undershooting the touch), an intention tremor as the finger approaches the target, or a rebound phenomenon if movement is abruptly stopped—signs that point to cerebellar dysfunction.

Gait evaluates how a person walks and uses balance and leg coordination, not the precise finger-to-nose coordination being tested here. Deep tendon reflexes (DTRs) assess reflex arcs rather than coordinated voluntary movement. Cranial nerves (CN) cover a broad range of sensory and motor functions; this specific finger-to-nose task is a cerebellar coordination maneuver, not a generic CN exam.