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Your search keyword '"Yokoyama, Eiji"' showing total 2 results
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2 results on '"Yokoyama, Eiji"'

1. Area Control of LCD with Laser Backlight Dynamic Scanning Method

Author

Muneharu Kuwata, Hideki Yoshii, Yokoyama Eiji, Hironobu Yasui, Shuichi Kagawa, Eiji Niikura, Atsushi Michimori, Hiroaki Sugiura, and Satoru Okagaki

Subjects
Materials science, Liquid-crystal display, law, business.industry, Media Technology, Optoelectronics, Electrical and Electronic Engineering, Backlight, Laser, business, Computer Science Applications, law.invention
Published
2010

2. Ozone-induced bradycardia and arrhythmia and their relation to sleep-wakefulness in rats

Author

Uchiyama Iwao, Arakawa Hatsuko, Yokoyama Eiji, and Arito Heihachiro

Subjects
Bradycardia, Male, Ozone, Sleep wakefulness, Electroencephalography, Toxicology, chemistry.chemical_compound, Electrocardiography, medicine, Animals, Wakefulness, medicine.diagnostic_test, Dose-Response Relationship, Drug, business.industry, Electromyography, Arrhythmias, Cardiac, Rats, Inbred Strains, General Medicine, Sleep in non-human animals, Rats, chemistry, Anesthesia, medicine.symptom, business, Sleep
Abstract

Rats were chronically implanted with electrodes for EEG, EMG and ECG recordings and exposed to 0.1 ppm, 0.2 ppm ozone (O3) or clean air as control for 5 consecutive days. Amounts of wakefulness (W), slow-wave sleep (SWS) and paradoxical sleep (PS) of the O3-exposed rats were not statistically different from respective control values. Compared with control rats, heart rates of the O3-exposed rats decreased and the number of bradyarrhythmic episodes increased with an increase in O3 levels. The O3-induced bradyarrhythmias occurred more prevalently in the order of W, SWS and PS state. Parasympathetic mechanisms were suggested on those cardiac abnormalities.

Published
1990

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