Olfactory
Optic
Oculomotor
Trochlear
Trigeminal
Abducens
Facial
Vestibulocochlear
Glossopharyngeal
Vagus
Accessory
Hypoglossal

I Olfactory Nerve
Examination Technique:

  • stimulant should be non-irritating

  • test one nostril at a time with the opposite side occluded

  • patient should not be able to see the stimulus

  • cloves ideal stimulant since it preserves it’s scent

  • improvise at bedside with soap, toothpaste, or perfume


Normal Response:

  • to perceive the scent with either nostril

Abnormal Response:

  • a unilateral loss is more likely to be significant and may imply a structural brain lesion affecting the olfactory bulb or tract, but could also be due to local causes such as a deviated septum or blocked nasal passage

  • bilateral loss can occur with rhinitis or damage to the cribriform plate