Neuroanatomical correlates of olfactory performance
We investigated associations between olfactory function and gray matter thickness in 46 healthy young subjects by means of an automated technique for measuring cortical thickness. We used an extended version of the Sniffin' Sticks test to assess olfactory function, including odor threshold, con...
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| Veröffentlicht in: | Experimental brain research 2010-02, Vol.201 (1), p.1-11 |
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| creator | Frasnelli, Johannes Lundström, Johan N Boyle, Julie A Djordjevic, Jelena Zatorre, Robert J Jones-Gotman, Marilyn |
| description | We investigated associations between olfactory function and gray matter thickness in 46 healthy young subjects by means of an automated technique for measuring cortical thickness. We used an extended version of the Sniffin' Sticks test to assess olfactory function, including odor threshold, concentration discrimination, quality discrimination, and odor identification. We observed a correlation between olfactory performance and cortical thickness of structures involved in earlier and later stages of chemosensory processing such as right medial orbitofrontal cortex, right insula, and adjacent cortex. Furthermore, we found significant bilateral correlations of olfactory performance with cortical thickness of areas around the central sulcus bilaterally, structures responsible for voluntary respiration and sniffing. In addition to expected general sex effects on cortical thickness, we observed areas, such as the entorhinal cortex, occipital cortex, intraparietal sulcus and insula (all in the right hemisphere), where the correlation between higher order olfactory functions and cortical thickness differed between women and men. These data demonstrate, for some neuroanatomical structures, a link between cortical thickness and olfactory function, in that thicker cortex is usually associated with better performance, but not always. This association between anatomy and olfactory performance suggests a possible biological explanation for the high degree of individual differences and sex effects observed in higher order olfactory tasks. |
| doi_str_mv | 10.1007/s00221-009-1999-7 |
| format | Article |
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We used an extended version of the Sniffin' Sticks test to assess olfactory function, including odor threshold, concentration discrimination, quality discrimination, and odor identification. We observed a correlation between olfactory performance and cortical thickness of structures involved in earlier and later stages of chemosensory processing such as right medial orbitofrontal cortex, right insula, and adjacent cortex. Furthermore, we found significant bilateral correlations of olfactory performance with cortical thickness of areas around the central sulcus bilaterally, structures responsible for voluntary respiration and sniffing. In addition to expected general sex effects on cortical thickness, we observed areas, such as the entorhinal cortex, occipital cortex, intraparietal sulcus and insula (all in the right hemisphere), where the correlation between higher order olfactory functions and cortical thickness differed between women and men. These data demonstrate, for some neuroanatomical structures, a link between cortical thickness and olfactory function, in that thicker cortex is usually associated with better performance, but not always. This association between anatomy and olfactory performance suggests a possible biological explanation for the high degree of individual differences and sex effects observed in higher order olfactory tasks.</description><identifier>ISSN: 0014-4819</identifier><identifier>EISSN: 1432-1106</identifier><identifier>DOI: 10.1007/s00221-009-1999-7</identifier><identifier>PMID: 19730837</identifier><identifier>CODEN: EXBRAP</identifier><language>eng</language><publisher>Berlin/Heidelberg: Berlin/Heidelberg : Springer-Verlag</publisher><subject>Adaptation, Physiological - physiology ; Adult ; Automation ; Biological and medical sciences ; Biomedical and Life Sciences ; Biomedicine ; Brain Mapping ; Cerebral Cortex - anatomy & histology ; Cerebral Cortex - physiology ; Discrimination (Psychology) - physiology ; Dominance, Cerebral - physiology ; Entorhinal Cortex - anatomy & histology ; Entorhinal Cortex - physiology ; Female ; Functional Laterality - physiology ; Fundamental and applied biological sciences. Psychology ; Genetic aspects ; Humans ; Injuries of the nervous system and the skull. Diseases due to physical agents ; Magnetic Resonance Imaging ; Male ; Medical sciences ; Neurology ; Neuropsychological Tests ; Neurosciences ; Odors ; Olfactory Pathways - anatomy & histology ; Olfactory Pathways - physiology ; Olfactory receptors ; Olfactory system and olfaction. Gustatory system and gustation ; Physiological aspects ; Prefrontal Cortex - anatomy & histology ; Prefrontal Cortex - physiology ; Psychometrics ; Research Article ; Sensory Thresholds - physiology ; Sex Characteristics ; Sex differences (Biology) ; Smell - physiology ; Traumas. 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We used an extended version of the Sniffin' Sticks test to assess olfactory function, including odor threshold, concentration discrimination, quality discrimination, and odor identification. We observed a correlation between olfactory performance and cortical thickness of structures involved in earlier and later stages of chemosensory processing such as right medial orbitofrontal cortex, right insula, and adjacent cortex. Furthermore, we found significant bilateral correlations of olfactory performance with cortical thickness of areas around the central sulcus bilaterally, structures responsible for voluntary respiration and sniffing. In addition to expected general sex effects on cortical thickness, we observed areas, such as the entorhinal cortex, occipital cortex, intraparietal sulcus and insula (all in the right hemisphere), where the correlation between higher order olfactory functions and cortical thickness differed between women and men. These data demonstrate, for some neuroanatomical structures, a link between cortical thickness and olfactory function, in that thicker cortex is usually associated with better performance, but not always. This association between anatomy and olfactory performance suggests a possible biological explanation for the high degree of individual differences and sex effects observed in higher order olfactory tasks.</description><subject>Adaptation, Physiological - physiology</subject><subject>Adult</subject><subject>Automation</subject><subject>Biological and medical sciences</subject><subject>Biomedical and Life Sciences</subject><subject>Biomedicine</subject><subject>Brain Mapping</subject><subject>Cerebral Cortex - anatomy & histology</subject><subject>Cerebral Cortex - physiology</subject><subject>Discrimination (Psychology) - physiology</subject><subject>Dominance, Cerebral - physiology</subject><subject>Entorhinal Cortex - anatomy & histology</subject><subject>Entorhinal Cortex - physiology</subject><subject>Female</subject><subject>Functional Laterality - physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Genetic aspects</subject><subject>Humans</subject><subject>Injuries of the nervous system and the skull. Diseases due to physical agents</subject><subject>Magnetic Resonance Imaging</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Neurology</subject><subject>Neuropsychological Tests</subject><subject>Neurosciences</subject><subject>Odors</subject><subject>Olfactory Pathways - anatomy & histology</subject><subject>Olfactory Pathways - physiology</subject><subject>Olfactory receptors</subject><subject>Olfactory system and olfaction. Gustatory system and gustation</subject><subject>Physiological aspects</subject><subject>Prefrontal Cortex - anatomy & histology</subject><subject>Prefrontal Cortex - physiology</subject><subject>Psychometrics</subject><subject>Research Article</subject><subject>Sensory Thresholds - physiology</subject><subject>Sex Characteristics</subject><subject>Sex differences (Biology)</subject><subject>Smell - physiology</subject><subject>Traumas. 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We used an extended version of the Sniffin' Sticks test to assess olfactory function, including odor threshold, concentration discrimination, quality discrimination, and odor identification. We observed a correlation between olfactory performance and cortical thickness of structures involved in earlier and later stages of chemosensory processing such as right medial orbitofrontal cortex, right insula, and adjacent cortex. Furthermore, we found significant bilateral correlations of olfactory performance with cortical thickness of areas around the central sulcus bilaterally, structures responsible for voluntary respiration and sniffing. In addition to expected general sex effects on cortical thickness, we observed areas, such as the entorhinal cortex, occipital cortex, intraparietal sulcus and insula (all in the right hemisphere), where the correlation between higher order olfactory functions and cortical thickness differed between women and men. These data demonstrate, for some neuroanatomical structures, a link between cortical thickness and olfactory function, in that thicker cortex is usually associated with better performance, but not always. This association between anatomy and olfactory performance suggests a possible biological explanation for the high degree of individual differences and sex effects observed in higher order olfactory tasks.</abstract><cop>Berlin/Heidelberg</cop><pub>Berlin/Heidelberg : Springer-Verlag</pub><pmid>19730837</pmid><doi>10.1007/s00221-009-1999-7</doi><tpages>11</tpages></addata></record> |
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| ispartof | Experimental brain research, 2010-02, Vol.201 (1), p.1-11 |
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| subjects | Adaptation, Physiological - physiology Adult Automation Biological and medical sciences Biomedical and Life Sciences Biomedicine Brain Mapping Cerebral Cortex - anatomy & histology Cerebral Cortex - physiology Discrimination (Psychology) - physiology Dominance, Cerebral - physiology Entorhinal Cortex - anatomy & histology Entorhinal Cortex - physiology Female Functional Laterality - physiology Fundamental and applied biological sciences. Psychology Genetic aspects Humans Injuries of the nervous system and the skull. Diseases due to physical agents Magnetic Resonance Imaging Male Medical sciences Neurology Neuropsychological Tests Neurosciences Odors Olfactory Pathways - anatomy & histology Olfactory Pathways - physiology Olfactory receptors Olfactory system and olfaction. Gustatory system and gustation Physiological aspects Prefrontal Cortex - anatomy & histology Prefrontal Cortex - physiology Psychometrics Research Article Sensory Thresholds - physiology Sex Characteristics Sex differences (Biology) Smell - physiology Traumas. Diseases due to physical agents Vertebrates: nervous system and sense organs Young Adult |
| title | Neuroanatomical correlates of olfactory performance |
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