Faculty Profiles - MIYATA Seiko

Papers - MIYATA Seiko

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Effects of age and sex on eye movement characteristics. Open Access

Takahashi J, Miura K, Morita K, Fujimoto M, Miyata S, Okazaki K, Matsumoto J, Hasegawa N, Hirano Y, Yamamori H, Yasuda Y, Makinodan M, Kasai K, Ozaki N, Onitsuka T, Hashimoto R

Neuropsychopharmacology reports Vol. 41 ( 2 ) page： 152 - 158 2021.6

Language：English Publishing type：Research paper (scientific journal) Publisher：Neuropsychopharmacology Reports

Abnormal eye movements are often associated with psychiatric disorders. Eye movements are sensorimotor functions of the brain, and aging and sex would affect their characteristics. A precise understanding of normal eye movements is required to distinguish disease-related abnormalities from natural differences associated with aging or sex. To date, there is no multicohort study examining age-related dependency and sex effects of eye movements in healthy, normal individuals using large samples to ensure the robustness and reproducibility of the results. In this study, we aimed to provide findings showing the impact of age and sex on eye movement measures. The present study used eye movement measures of more than seven hundred healthy individuals from three large independent cohorts. We herein evaluated eye movement measures quantified by using a set of standard eye movement tests that have been utilized for the examination of patients with schizophrenia. We assessed the statistical significance of the effects of age and sex and its reproducibility across cohorts. We found that 4-18 out of 35 eye movement measures were significantly correlated with age, depending on the cohort, and that 10 of those, which are related to the fixation and motor control of smooth pursuit and saccades, showed high reproducibility. On the other hand, the effects of sex, if any, were less reproducible. The present results suggest that we should take age into account when we evaluate abnormalities in eye movements.

DOI： 10.1002/npr2.12163

Sleep fragmentation and working memory in healthy adults. Open Access

Okuda M, Noda A, Mabuchi S, Iwamoto K, Banno M, Miyata S, Yasuma F, Ozaki N

Sleep science (Sao Paulo, Brazil) Vol. 14 ( Spec 2 ) page： 111 - 117 2021.4

Language：English Publishing type：Research paper (scientific journal) Publisher：Sleep Science

Introduction: Sleep is essential for performing cognitive function in humans. We have hypothesized that sleep fragmentation compared to sleep efficiency may have a negative impact on the working memory. Material and Methods: Twenty-eight healthy adults (18 males and 10 females; mean age 27.8±15.5 years) were enrolled in this study. We measured the total sleep time (TST), sleep efficiency, %stage wakefulness (W), %stage rapid eye movement (REM), %stage N1, %stage N2, %stage N3, wake after sleep onset (WASO), and arousal index using polysomnography. Working memory, executive function, and sustained attention of three domains of cognitive function were evaluated with the number of back task (N-back task), Wisconsin card sorting test (WCST), and continuous performance test-identical pairs (CPT-IP), respectively. Results: The percentage of correct answers on the 2-back task was significantly correlated with %stage REM, %stage N1, and %stage N2 (%stage REM: r=0.505, p=0.006; %stage N1: r=-0.637, p<0.001; %stage N2: r=0.670, p<0.001), and multiple regression analysis including the stepwise forward selection method revealed that %stage N2 was the most significant factor (%stage N2: β=0.670, p<0.001). The percentage of correct answers on the 2-back task was also significantly correlated with TST, sleep efficiency, WASO, and arousal index (TST: r=0.492, p=0.008; sleep efficiency: r=0.622, p<0.001; WASO: r=-0.721, p<0.001; arousal index: r=-0.656, p<0.001), and WASO was the significant factor (β=-2.086, p=0.007). The WCST category achievement and CPT-IP d-prime score were correlated with none of the sleep variables. Conclusion: Increased WASO and a decrease in %stage N2 were associated with worse working memory.

DOI： 10.5935/1984-0063.20200088

Effects of long sleep time and irregular sleep-wake rhythm on cognitive function in older people. Open Access

Okuda M, Noda A, Iwamoto K, Nakashima H, Takeda K, Miyata S, Yasuma F, Ozaki N, Shimouchi A

Scientific reports Vol. 11 ( 1 ) page： 7039 2021.3

Language：English Publishing type：Research paper (scientific journal) Publisher：Scientific Reports

Sleep disturbances and cognitive decline are common in older adults. We aimed to investigate the effects of the total sleep time (TST) and sleep–wake rhythm on executive function and working memory in older adults. In 63 older participants, we measured the TST, wake after sleep onset (WASO), and sleep timing (midpoint between bedtime and wake-up time) using actigraphy. Executive function was evaluated with the trail making test B (TMT-B) and Wisconsin card sorting test (WCST). The number of back task (N-back task) was used to measure working memory. Participants with a TST ≥ 8 h had a significantly lower percentage of correct answers (% correct) on the 1-back task than those with a TST < 8 h. The % correct on the 1-back task was significantly correlated with the TST, WASO, and sleep timing. Multiple regression analyses revealed that the TST and sleep timing were significant factors of the % correct on the 1-back task. The TMT-B score was significantly correlated with the sleep timing. Category achievement on the WCST was significantly correlated with the standard deviation of the sleep timing. Therefore, a long sleep time and an irregular sleep–wake rhythm could have adverse effects on executive function and working memory in older people.

DOI： 10.1038/s41598-021-85817-y

Consideration for daily preventive measures to lead a healthy and comfortable life

The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan, Chubu, Vol. 22 ( 0 ) page： 77 - 80 2021

Patient characteristics affecting accurate detection of sleep apnea using a bed sheet-type portable monitor

Miyata Seiko, Otake Hironao, Ando Motoo, Okuda Masato, Fujishiro Hiroshige, Iwamoto Kunihiro, Noda Akiko, Sone Michihiko, Ozaki Norio

SLEEP AND BREATHING Vol. 24 ( 2 ) page： 783 - 790 2020.6

SLEEP MONITORING WITH A SINGLE CHANNEL EEG RECORDER IN PATIENTS WITH PSYCHIATRIC DISORDERS

Miyata S., Iwamoto K., Banno M., Ito Y., Noda A., Ozaki N.

SLEEP Vol. 43 page： A220 - A221 2020.4

Effects of sleep-disordered breathing and hypertension on cognitive function in elderly adults

Kato Kazuko, Noda Akiko, Yasuma Fumihiko, Matsubara Yuka, Miyata Seiko, Iwamoto Kunihiro, Miyazaki Soichiro, Ozaki Norio

CLINICAL AND EXPERIMENTAL HYPERTENSION Vol. 42 ( 3 ) page： 250 - 256 2020

認知症と睡眠障害

宮田聖子

日本臨牀 Vol. 78 page： 567 - 571 2020

高齢者の不眠、過眠、薬物療法が運転に及ぼす影響と指導法を教えてください

宮田聖子

老年医学 Vol. 58 page： 433 - 436 2020

Clinical profiles of late-onset psychiatric patients exhibiting incidental REM sleep without atonia

Fujishiro Hiroshige, Okuda Masato, Iwamoto Kunihiro, Miyata Seiko, Torii Youta, Iritani Shuji, Ozaki Norio

JOURNAL OF NEURAL TRANSMISSION Vol. 126 ( 8 ) page： 1095 - 1104 2019.8

CUFF-LESS BLOOD PRESSURE MONITORING DURING SLEEP

Noda A., Mita Y., Miyata S., Ando M., Okumura T.

JOURNAL OF HYPERTENSION Vol. 37 page： E254 - E254 2019.7

Effect of Valvular Regurgitation on Left Ventricular Function in Middle-aged and Elderly

MIYATA Seiko, NODA Akiko

Journal of Clinical Physiology Vol. 49 ( 2 ) page： 89 - 96 2019.5

Language：English Publishing type：Research paper (scientific journal) Publisher：Japanese Society of Clinical Physiology

Background: Valvular regurgitation, a degenerative condition, increases in prevalence with age. Its impact on left ventricular (LV) function in the elderly remains unclear, however.Objective: The purpose of this study was to characterize the relationship between LV function and valvular regurgitation in middle-aged and elderly.Methods: Echocardiography was performed to assess LV systolic and diastolic function in 98 community-dwelling middle-aged and older adults. Mitral regurgitation (MR) and aortic regurgitation (AR) were qualitatively graded from absent or trivial to severe.Results: The LV ejection fraction was significantly higher and the deceleration time at the mitral level during rapid filling significantly longer in the MR group than in the non-MR group. The ratio of early diastolic wave peak velocity to mitral annular early diastolic peak velocity was significantly greater in the AR group than in the non-AR group.Conclusions: Both MR and AR may play an important role in change in LV systolic and diastolic function, even in cases of mild regurgitation, in middle-aged and elderly.

DOI： 10.34363/jocp.49.2_89

CiNii Research

EFFECTS OF AROMATHERAPY ON SLEEP AND COGNITIVE FUNCTION IN THE ELDERLY

Noda Akiko, Funaki Narumi, Hirashita Rie, Nakashima Honoka, Mita Yasuaki, Masato Okuda, Miyata Seiko, Iwamoto Kunihiro, Ozaki Norio, Urakami Katsuya

SLEEP Vol. 42 page： . 2019.4

DIFFERENCES IN SLEEP DURATION AND QUALITY BETWEEN WEEKDAYS AND WEEKENDS IN JAPANESE ADULTS

Miyata Seiko, Iwamoto Kunihiro, Ando Motoo, Ito Yuki, Noda Aiko, Ozaki Norio

SLEEP Vol. 42 page： . 2019.4

Delayed sleep/wake rhythm and excessive daytime sleepiness correlate with decreased daytime brain activity during cognitive task in university students

Miyata Seiko, Noda Akiko, Kawai Sayumi, Honda Kumiko, Iwamoto Kunihiro, Ozaki Norio, Miyazaki Soichiro, Kondo Takaharu

BIOLOGICAL RHYTHM RESEARCH Vol. 50 ( 2 ) page： 171 - 179 2019.3

Application of eye trackers for understanding mental disorders: Cases for schizophrenia and autism spectrum disorder.

Shishido E, Ogawa S, Miyata S, Yamamoto M, Inada T, Ozaki N

Neuropsychopharmacology reports 2019.2

今月の特集1 発症を予測する臨床検査-先制医療で5疾病に立ち向かう! 精神疾患の先制医療

宮田聖子, 尾崎紀夫

臨床検査 Vol. 63 ( 1 ) page： 37 - 41 2019.1

Very low frequency component of heart rate variability as a marker for therapeutic efficacy in patients with obstructive sleep apnea: Preliminary study Open Access

Noda Akiko, Hayano Junichiro, Ito Nami, Miyata Seiko, Yasuma Fumihiko, Yasuda Yoshinari

JOURNAL OF RESEARCH IN MEDICAL SCIENCES Vol. 24 ( 1 ) page： 84 2019

Relationship between Sleep and Lipid Metabolism

MIYATA Seiko, NODA Akiko, IWAMOTO Kunihiro, OZAKI Norio

Oleoscience Vol. 19 ( 7 ) page： 285 - 290 2019

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Oil Chemists' Society

Sleep plays an important role in metabolic regulation and insomnia disorder, short sleep and long sleep are also related with dyslipidemia. Among them especially, numerous evidence suggests that sleep disordered breathing is closely associated with dyslipidemia, hypertension and diabetes, and increases the risk of cardiovascular disease. In addition, in recent years, studies that elucidate the molecular mechanism of dyslipidemia due to sleep disorder by a mass spectrometer is increasing. The relationship between severity and lipid species profile in patients with obstructive sleep apnea has been reported, and the previous study revealed a significant overall shift in lipid metabolism, with higher levels of phospholipids under sleep-restricted conditions. Comprehensive analysis of lipid metabolites using a mass spectrometry further the understanding of sleep/wake regulation and the associated metabolic processes, and will be vital to identify robust biomarkers for disease states and drug efficacy. In this paper, we review epidemiological and mass spectrometric studies on the relationship between sleep and dyslipidemia.

DOI： 10.5650/oleoscience.19.285

CiNii Research

Effects of hypnotics on prefrontal cortex activity during a verbal fluency task in healthy male subjects: A near-infrared spectroscopy study

Tsuruta Yoshiyuki, Iwamoto Kunihiro, Banno Masahiro, Kawano Naoko, Kohmura Kunihiro, Miyata Seiko, Fujishiro Hiroshige, Noda Yukihiro, Noda Akiko, Iritani Shuji, Ozaki Norio

HUMAN PSYCHOPHARMACOLOGY-CLINICAL AND EXPERIMENTAL Vol. 33 ( 6 ) page： e2678 2018.11

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