The finger-to-nose (FTN) test assesses coordination, balance, and cerebellar function, checking for smooth, accurate limb movements (ataxia) and control, revealing issues like dysmetria (overshooting/undershooting targets) or intention tremor (tremor that worsens with movement) often linked to damage in the cerebellum. It's a key part of a neurological exam, helping doctors diagnose problems with movement control.
The finger-to-nose test is routinely performed during the clinical assessment of patients with cognitive impairments. Although widely known to screen for cerebellar dysfunction by unmasking appendicular ataxia, we have found that this test could also be interpreted from a cognitive perspective.
If the patient followed the examiner's instructions smoothly, it was judged as normal. If the patient showed hesitation, tremor, undershooting, or overshooting in this test, it was judged as abnormal, which may suggest a lesion in the cerebellar hemispheres.
Coordination and balance tests check how well your brain and nerves control movement and balance. The examiner may ask you to walk or touch your finger to your nose with your eyes closed. You also may be asked to stand still with your eyes closed to check your balance.
What does a positive Romberg test mean? A Romberg test is positive when you have a loss of balance when you close your eyes during the test. Loss of balance is defined as increased swaying of your body, foot movement in the direction of a fall or falling.
A simple mnemonic to remember some of the cerebellar signs is DANISH:
Videonystagmography Testing
This type of testing allows audiologists to record and interpret eye movements and confirm whether inner ear dysfunction is responsible for vertigo. At NYU Langone, videonystagmography testing takes place in a testing suite within your audiologist's office.
To test for kinetic tremor we can use the finger to nose test. In performing this test, the patients are instructed to alternatively touch their nose and our finger. In doing so, the patients should stretch their arm completely and should not move too fast. In this way we have more chances of triggering the tremor.
The signs may be categorized as follows: (1) proprioceptive abnormalities manifest by flutter, dysmetria, and instability of gaze and (2) defects of vision-dependent functions manifest by abnormalities of pursuit, vestibular suppression, optokinetic response, and nystagmus. 1.
The Romberg sign is an easily administered, no-equipment, bedside physical exam maneuver used since its description in the 19th century to help diagnose tabes dorsalis and dorsal column and proprioceptive dysfunction. A positive test is an inability to maintain an erect posture over 60 seconds with eyes closed.
✅ Method 2: Finger-to-Nose Test
Close your eyes and touch your nose with your index finger. Then switch hands and repeat. If you experience misjudgment or trouble coordinating the movement, it could signal early cognitive or motor impairments.
If you don't experience any movement after the flick, your Hoffman sign result is negative. Several studies indicate that up to 3% of people will have positive Hoffman sign results even though their spinal cord is normal.
There isn't a cure for cerebellar degeneration. Treatment usually depends on the underlying cause of your brain dysfunction. However, medications can sometimes help manage certain symptoms, including tremors or problems with walking and dizziness.
The "2-finger test" for dementia involves an examiner showing a hand gesture (like interlocking index and middle fingers) and asking the patient to copy it, testing motor skills, visual memory, and coordination, as difficulties can signal early cognitive decline, but it's a screening tool, not a definitive diagnosis, prompting further medical evaluation. Other related tests include finger-tapping and finger-to-nose, looking for hesitation or misjudgment in movement.
Testing for Parkinson's Disease
A DaTscan involves an injection of a small amount of a radioactive drug and a machine called a single-photon emission computed tomography (SPECT) scanner, similar to an MRI.
The officer watches for the following clues that a driver is intoxicated: An inability to follow instructions, swaying, a lack of depth perception, muscle tightening or tremors, or an inability to touch finger directly to tip of the nose.
Optic ataxia: You have trouble guiding your hand to an object that you see. You might reach for an object, but your hand doesn't land near it. You might have trouble walking around an obstacle. Simultanagnosia: You see individual objects rather than multiple objects in the same field of vision.
Identify the early symptoms associated with cerebellar infarcts, including vertigo, impaired balance, severe headache, altered mental status, vomiting, and drowsiness, to enable prompt recognition and intervention.
The 5-2-1 rule in Parkinson's disease is a clinical guideline to identify when the condition may be considered "advanced," suggesting a need for advanced therapies like Deep Brain Stimulation (DBS) or intestinal gel. It's met if a patient experiences at least 5 doses of levodopa daily, plus 2 or more hours of "Off" time (symptoms return), and/or 1 or more hour of troublesome dyskinesia (involuntary movements) daily, signaling inadequate symptom control.
💡 Quick Summary
Symptoms that favor a peripheral etiology of vertigo include auditory neurologic symptoms such as hearing loss and tinnitus, whereas findings such as non-fatigable nystagmus favor more central etiologies. Regardless of the etiology, MRI is typically the best modality when imaging is indicated.
The Fukuda Step Test is one of the tests that may be performed during a vestibular and balance exam. A physical therapist may do these tests if you are feeling dizzy, have vertigo, or are having problems maintaining your balance.
Vestibular Rehabilitation Therapy
Your ENT specialist may recommend vestibular rehabilitation if you have frequent vertigo attacks. The therapy involves balance, head, and eye exercises to improve vertigo symptoms such as balance issues, dizziness, and unstable vision.