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Updated: Jul 3, 2026

A Free-breathing fMRI Method to Study Human Olfactory Function
Published on: July 30, 2017
[Posttraumatic anosmia: olfactory event related potentials and MRI evaluation]
Jian-Feng Liu1, Hui You, Dao-Feng Ni
1Department of Otorhinolaryngology, China-Japen Friendship Hospital, Beijing 100029, China.
Olfactory event-related potentials (OERP) objectively assess posttraumatic olfactory dysfunction. Magnetic resonance imaging precisely identifies olfactory pathway injuries in anosmia patients.
Area of Science:
- Neurology
- Neuroscience
- Ophthalmology
Context:
- Posttraumatic anosmia presents a diagnostic challenge.
- Objective evaluation of olfactory function is crucial.
Purpose:
- To evaluate olfactory function in posttraumatic anosmia using olfactory event-related potentials (OERP) and magnetic resonance imaging (MRI).
- To correlate neuroimaging findings with olfactory test results.
Summary:
- Twenty-four patients with posttraumatic anosmia underwent OERP, MRI, and olfactory testing.
- OERP was unobtainable in most patients, indicating severe dysfunction.
- MRI revealed olfactory bulb injuries in 100% of patients, with additional damage to the rectus gyrus, orbital gyrus, olfactory tracts, and temporal lobes.
Impact:
- OERP provides objective assessment of posttraumatic olfactory function.
- MRI precisely identifies the location and extent of olfactory pathway injuries.
- These methods aid in understanding and managing olfactory dysfunction after trauma.
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