The consequences of olfactory dysfunction and the value of smell training

Thomas Hummel M.D. conducts research in the chemosensory systems at the Smell and Taste Clinic of the Department of Otorhinolaryngology of the “Technische Universität” Dresden in Germany.
This includes an olfactory/gustatory dysfunction clinic also involving patients with neurodegenerative causes of olfactory loss, and investigations in the intranasal trigeminal system.
Investigations in these areas are performed using electrophysiological (olfactory event-related potentials, recordings from the mucosa of the nasal cavity), psychophysical, and imaging techniques (MRI).

Professor Hummel developed the original smell training approach that is now used worldwide as a result of his research in 2009. The original kit for smell training contains 4 aromas: lemon, clove, rose and eucalyptus.

https://www.uniklinikum-dresden.de/de/das-klinikum/kliniken-polikliniken-institute/hno/forschung/interdisziplinaeres-zentrum-fuer-riechen-und-schmecken/homepage-in-englisch-1/employees/prof-dr-med-thomas-hummel