Effects of Occlusal Disharmony on Working Memory Performance and Prefrontal Cortex Activity Induced by Working Memory Tasks Measured by NIRS

被引:9
|
作者
Sakatani, Kaoru [1 ]
Tsujii, Takeo [1 ]
Hirayama, Teruyasu [2 ]
Katayama, Youichi [2 ]
Takeda, Tomotaka [3 ]
Amemiya, Ai [3 ]
Ishigami, Keiichi [3 ]
机构
[1] Nihon Univ, Sch Med, Div Opt Brain Engn, Itabasi Ku, Tokyo 1730032, Japan
[2] Nihon Univ, Sch Med, Div Neurosurg, Dept Neurol Surg, Tokyo 1730032, Japan
[3] Tokyo Dent Coll, Dept Sports Dent, Chiba, Japan
来源
基金
日本科学技术振兴机构;
关键词
Dementia; NIRS; Occlusal disharmony; Prefrontal cortex; Working memory; AUTONOMIC NERVOUS-SYSTEM; STRESS; NEUROENDOCRINE; AMYGDALA; SKIN;
D O I
10.1007/978-1-4614-4989-8_33
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
The effects of artificial occlusal disharmony (AOD) on working memory function and prefrontal cortex (PFC) activity in the elderly were examined. We evaluated working memory function using the modified Sternberg test (ST). We measured activity in the bilateral PFC during ST using near-infrared spectroscopy (NIRS) before and after AOD: the mandibular position was displaced by a splint for 10 min. AOD caused a gradual increase of oxyhemoglobin (oxy-Hb) in the bilateral PFC. The response time of ST (six digits) after AOD was longer than that before AOD. The oxy-Hb increase during ST after AOD was smaller than that before AOD. These results indicate that short-term physical stress caused by AOD decreased working memory function in elderly subjects, associated with a decrease of the evoked PFC activity during working memory function.
引用
收藏
页码:239 / 244
页数:6
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