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Human hippocampal c...
Human hippocampal connectivity is stronger in olfaction than other sensory systems
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Zhou, Guangyu (author)
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- Olofsson, Jonas K. (author)
- Stockholms universitet,Perception och psykofysik,Nathan S. Kline Institute, USA; New York University School of Medicine, USA
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Koubeissi, Mohamad Z. (author)
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- Menelaou, Georgios (author)
- Stockholms universitet,Perception och psykofysik
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Rosenow, Joshua (author)
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Schuele, Stephan U. (author)
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Xu, Pengfei (author)
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Voss, Joel L. (author)
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Lane, Gregory (author)
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Zelano, Christina (author)
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
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In: Progress in Neurobiology. - : Elsevier BV. - 0301-0082 .- 1873-5118. ; 201
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- During mammalian evolution, primate neocortex expanded, shifting hippocampal functional networks away from primary sensory cortices, towards association cortices. Reflecting this rerouting, human resting hippocampal functional networks preferentially include higher association cortices, while those in rodents retained primary sensory cortices. Research on human visual, auditory and somatosensory systems shows evidence of this rerouting. Olfaction, however, is unique among sensory systems in its relative structural conservation throughout mammalian evolution, and it is unknown whether human primary olfactory cortex was subject to the same rerouting. We combined functional neuroimaging and intracranial electrophysiology to directly compare hippocampal functional networks across human sensory systems. We show that human primary olfactory cortex—including the anterior olfactory nucleus, olfactory tubercle and piriform cortex—has stronger functional connectivity with hippocampal networks at rest, compared to other sensory systems. This suggests that unlike other sensory systems, olfactory-hippocampal connectivity may have been retained in mammalian evolution. We further show that olfactory-hippocampal connectivity oscillates with nasal breathing. Our findings suggest olfaction might provide insight into how memory and cognition depend on hippocampal interactions.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Neurosciences (hsv//eng)
Keyword
- hippocampal network
- olfactory system
- functional connectivity
- fMRI
- iEEG
- Psychology
- psykologi
Publication and Content Type
- ref (subject category)
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- By the author/editor
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Zhou, Guangyu
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Olofsson, Jonas ...
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Koubeissi, Moham ...
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Menelaou, Georgi ...
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Rosenow, Joshua
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Schuele, Stephan ...
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show more...
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Xu, Pengfei
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Voss, Joel L.
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Lane, Gregory
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Zelano, Christin ...
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show less...
- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Basic Medicine
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and Neurosciences
- Articles in the publication
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Progress in Neur ...
- By the university
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Stockholm University