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Age-related Changes in Brain Regional Activity during Chewing: A Functional Magnetic Resonance Imaging Study
Abstract
Age-related changes in mastication-induced brain neuronal activity have been suggested. However, in humans, little is known about the anatomical regions involved. Using fMRI during cycles of rhythmic gum-chewing and no chewing, we have examined the effect of aging on brain regional activity during chewing in young adult (19–26 yrs), middle-aged (42–55 yrs), and aged (65–73 yrs) healthy humans. In all subjects, chewing resulted in a bilateral increase in the BOLD signals in the sensorimotor cortex, cerebellum, thalamus, supplementary motor area, and insula, and a unilateral increase in the right prefrontal area. In the first three regions, the signal increases were attenuated in an age-dependent manner, whereas, in the right prefrontal area, the converse was seen. The remaining two regions showed no significant differences with ages. These results indicate that chewing causes regional increases in neuronal activity in the brain, some of which are age-dependent.
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The Medial Temporal Lobe Memory System
Squire, L. R., & Zola-Morgan, S. (1991) · Science · doi:10.1126/science.1896849 · Cited by 3,282
Pulvermüller, F. (1999) · Behavioral and Brain Sciences · doi:10.1017/s0140525x9900182x · Cited by 1,284
Cited by
Feeding and reward: Perspectives from three rat models of binge eating
Corwin, R. L., Avena, N. M., & Boggiano, M. M. (2011) · Physiology & Behavior · doi:10.1016/j.physbeh.2011.04.041 · Cited by 289
Metadata
- Authors
- Onozuka, M., Fujita, M., Watanabe, K., Hirano, Y., Niwa, M., Nishiyama, K., & Saito, S.
- Venue
- Journal of Dental Research
- Publisher
- SAGE Publications
- Published
- 2003-08
- Volume
- 82
- Issue
- 8
- Pages
- 657-660
- ISSN
- 0022-0345 (ISSN-L)
- 1544-0591
- OpenAlex
- W2124460012
- Cited by
- 188
- References
- 2
- FWCI
- 8.19
- Type
- journal article
- Language
- en
- Open access
- closed
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- Onozuka, M., Fujita, M., Watanabe, K., Hirano, Y., Niwa, M., Nishiyama, K., & Saito, S. (2003). Age-related Changes in Brain Regional Activity during Chewing: A Functional Magnetic Resonance Imaging Study. Journal of Dental Research. https://doi.org/10.1177/154405910308200817
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