Sensory Impairment - Deficits in Smell Perception

Short Description: Sensory impairment, including deficits in smell perception, is recognized as a significant non-motor feature in various neurodegenerative diseases, where the progressive loss of neurons in sensory pathways leads to functional losses in various sensory systems. Hence, smell impairments often precede cognitive and motor symptoms, serving as early indicators of disease onset and progression. In the clinical context, olfactory testing is increasingly used as a potential early diagnostic tool, particularly for Alzheimer’s and Parkinson’s, where smell loss can occur years before cognitive decline or motor symptoms emerge.

Methodological Details: Respondents were asked to identify specific food and environmentally relevant odors using a 12-item self-administered smell identification test.

Contact	Syear	Respondents	Dataset	Variables	Availability	Field	Method	Replication
Andreas Dunkel (Leibniz Institute for Food Systems Biology at the Technical University of Munich), Veronika Somoza (Leibniz Institute for Food Systems Biology at the Technical University of Munich)	2025	tba	Coming with release in 2028		~4/2028	Health	Smell test