The Efficacy of Modified Olfactory Training for MCI High-Risk Individuals

Participants will use a modified olfactory training device based on expiratory pressure. The advantages of the improved device are as follows: bi-directional airflow, positive pressure and the function of voice prompts and automatic counting.

This device involves four brown glass jars (total volume 5 mL) with one of the four odors in each (1mL each, soaked in cotton pads to prevent spilling). The following odors were used: phenyl ethyl alcohol (PEA): rose, menthol: mint, citronellal: lemon, and eugenol: cloves. All jars were labeled with the odor name.