A pilot study to assess the origin of the spectral power increases of heart rate variability associated with transient changes in the R‐R interval

S Mitsuyama, T Sakamoto, T Nagasawa… - Physiological …, 2024 - Wiley Online Library
Spectral analysis of heart rate variability (HRV) is used to assess cardiovascular autonomic
function. In the power density spectrum calculated from a time series of the R‐R interval (RRI)…

Temporal relationships among changes in the RR‐interval and the powers of the low‐and high‐frequency components of heart rate variability in normal subjects

…, C Uehara, T Nagasawa, S Mitsuyama… - Physiological …, 2023 - Wiley Online Library
Spectral analysis of heart rate variability (HRV) is widely used as a non‐invasive method to
assess the cardiovascular autonomic function. Of the two main frequency components of HRV…

A common Ile 823 Met variant of ATP-binding cassette transporter A1 gene (ABCA1) alters high density lipoprotein cholesterol level in Japanese population

…, K Tsushima, K Monzen, T Yamazaki, S Mitsuyama… - Atherosclerosis, 2003 - Elsevier
Recently, variants in ATP-binding cassette transporter A1 (ABCA1) were demonstrated to
be associated with increased level of high density lipoprotein cholesterol (HDL-C) and …

[HTML][HTML] Drug-recommendation system for patients with infectious diseases

K Shimada, H Takada, S Mitsuyama… - AMIA Annual …, 2005 - pmc.ncbi.nlm.nih.gov
We developed a decision support system that helps doctors select appropriate first-line drugs.
The system classifies patients’ abilities to protect themselves from infectious diseases as a …

Temporal profiles and 2-dimensional oxy-, deoxy-, and total-hemoglobin somatosensory maps in rat versus mouse cortex

N Prakash, JD Biag, SA Sheth, S Mitsuyama, J Theriot… - Neuroimage, 2007 - Elsevier
BACKGROUND:: Mechanisms of neurovascular coupling—the relationship between
neuronal chemoelectrical activity and compensatory metabolic and hemodynamic changes—…

[PDF][PDF] Clinical chemistry and immunoassay testing supporting the individual healthy life

K Imai, S Watari, T Sakazume, S Mitsuyama - Hitachi Rev, 2008 - hitachi.com
TESTING for the constituents of blood and urine provides evidence for diagnosis, and has
been effective in the early detection and prediction of illness. Hitachi extended spectrometer …

A three-dimensional sound localization sensor system based on the spatio-temporal gradient method

…, H Shinoda, K Ogawa, S Mitsuyama - Transactions of the …, 1993 - jstage.jst.go.jp
This paper describes a theory, algorithm, and experimental results of a new 3-D sound source
localization system which is based on the spatio-temporal derivative method applied to …

[HTML][HTML] The difference in arterial baroreflex sensitivity between the supine and standing positions in healthy subjects

T Sakamoto, S Mitsuyama, T Nagasawa, K Kario… - The Journal of …, 2025 - Elsevier
The spectral analysis of heart rate variability (HRV) has long been considered a practical,
noninvasive tool to assess autonomic nervous functions that regulate the cardiovascular …

STAT3 activation via interleukin 6 trans-signalling contributes to ileitis in SAMP1/Yit mice

K Mitsuyama, S Matsumoto, S Rose-John, A Suzuki… - Gut, 2006 - gut.bmj.com
Background and aim: SAMP1/Yit mice spontaneously develops intestinal inflammation.
Previously, we demonstrated that the signal transducer and activator of transcription (STAT)-3/…

Automatic classification of urinary sediment images by using a hierarchical modular neural network

S Mitsuyama, J Motoike… - Medical Imaging 1999 …, 1999 - spiedigitallibrary.org
We have developed an automated image-classification method for the examination of urinary
sediment. Urine contains many kinds of particles of various colors and sizes. To classify …