Poster A90, Saturday, March 24, 1:30–3:30 pm, Exhibit Hall C
Short Form of the California Odor Learning Test
Conner Frank1, Jingwen Liu1, Claire Murphy1,2; 1San Diego State University, 2University of California San Diego
Olfactory function is impaired in a number of neurodegenerative diseases, notably Alzheimer’s disease and Parkinson’s disease, thus odor tests may prove to be useful as biomarkers of disease. The California Odor Learning Test is a learning and memory test designed to be analogous to the California Verbal Learning Test. Stimuli for the test are four odors in each of four categories: fruits, spices and herbs, personal products and condiments. Subjects complete 5 learning trials before producing short and long delay, free and cued recall scores, discrimination scores and odor identification scores. To produce a test that can be administered more quickly, we have produced a form with three odors in three categories. We administered the two forms to cognitively normal older adults on two different days, in counterbalanced order. Odor thresholds were administered to determine sensitivity for odor and the MMSE was administered to screen for dementia. We compared the number of items recalled on the learning trials over trials 1-3 in the two forms. Analyses indicated that the number of items recalled in the two forms were highly correlated. A shorter version of the California Odor Learning Test will allow for inclusion in studies and clinical assessment with significant time constraints and may prove beneficial in the application of olfactory tests to detection of neurodegenerative diseases. Supported by NIH grant # AG004085-26 to CM.
Topic Area: PERCEPTION & ACTION: Development & aging