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Nováková LM, Georgi H, Vlčková K, Kopeček M, Babuská A, Havlíček J. Small Effects of Olfactory Identification and Discrimination on Global Cognitive and Executive Performance Over 1 Year in Aging People Without a History of Age-Related Cognitive Impairment. Physiol Behav 2024:114579. [PMID: 38710351 DOI: 10.1016/j.physbeh.2024.114579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 05/08/2024]
Abstract
Olfactory and cognitive performance share neural correlates profoundly affected by physiological aging. However, whether odor identification and discrimination scores predict global cognitive status and executive function in healthy older people with intact cognition is unclear. Therefore, in the present study, we set out to elucidate these links in a convenience sample of 204 independently living, cognitively intact healthy Czech adults aged 77.4 ± 8.7 (61 - 97 years) over two waves of data collection (one-year interval). We used the Czech versions of the Montreal Cognitive Assessment (MoCA) to evaluate global cognition, and the Prague Stroop Test, Trail Making Test, and several verbal fluency tests to assess executive function. As a subsidiary aim, we aimed to examine the contribution of olfactory performance towards achieving a MoCA score above vs. below a published cut-off value. Our findings demonstrate that olfaction, on the one hand, and global cognition and executive function, on the other, are related even in healthy older people.
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Affiliation(s)
- Lenka Martinec Nováková
- Department of Psychology and Life Sciences, Faculty of Humanities, Charles University, Pátkova 2137/5, 182 00 Prague 8 Libeň, Czech Republic; Department of Chemical Education and Humanities, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6 Dejvice, Czech Republic.
| | - Hana Georgi
- Prague College of Psychosocial Studies, Hekrova 805, 149 00 Prague 4, Czech Republic
| | - Karolína Vlčková
- Department of Psychology, Faculty of Arts, Charles University, Náměstí Jana Palacha 2, 116 38 Prague 1, Czech Republic; Department of Psychiatry and Medical Psychology, Third Faculty of Medicine, Charles University, Ruská 87, 100 00, Prague 10, Czech Republic; National Institute of Mental Health, Topolová 748, 250 67 Klecany, Czech Republic
| | - Miloslav Kopeček
- Department of Psychiatry and Medical Psychology, Third Faculty of Medicine, Charles University, Ruská 87, 100 00, Prague 10, Czech Republic; National Institute of Mental Health, Topolová 748, 250 67 Klecany, Czech Republic
| | - Anna Babuská
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 00 Prague 2, Czech Republic
| | - Jan Havlíček
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 00 Prague 2, Czech Republic
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