• Title/Summary/Keyword: Sensory organs

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An Analytical Study on the Disease Pattern of a Rural Population in Korea (하기(夏期) 무의촌진료(無醫村診療)에서 나타난 우리 나라 일부(一部) 농촌주민(農村住民) 의 질병양상(疾病樣相))

  • Meng, Kwang-Ho;Lee, Se-Hoon
    • Journal of agricultural medicine and community health
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    • v.2 no.1
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    • pp.65-72
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    • 1977
  • This study was made with 1394 clinical records obtained by a mobile charity health team in a rural Korea for 10 days from July 23 to Aug. 1, 1977 to see the disease pattern of the rural population in Korea. The health team consisted of 7 physicians in different clinical departments of the St. Mary's Hospital tried to cover as many as patients in that area by giving full informations and instructions before starting health services. which supposed to minimize the omissions of patients visits in that area. The proportion of each disease as well as its order in terms of the number of patients was reviewed by matching with age and sex distribution of patients, and with the duration of illness (complaints). Major findings obtained in this analysis were as follows; 1. Among 1394 patients, 536 (38.5%) was male and 858(61.5%) was female. As to the age distribution of the patients. those who are in the age group of 10-19 showed the highest proportion of 15.6% and those who are in the age group of 5-9 and 40-49 was the next with the proportion of 15.4% and 15.2% respectively. 2. The most prevalent cause of general morbidity were diseases of digestive system, diseases of nervous system and sensory organs, diseases of respiratory system, and diseases of skin and subcutaneous tissue in order. And their proportions among all patients were 21.8%, 20.7%, 14.5%, and 12.4% in respectively. The order of the diseases ranked by the number of patiens was slightly different in female population from that of total population, i. e. diseases of nervous system and sensory organs was the first. diseases of digestive system was the second, and the diseases of circulatory system was the third. 3. 23.2% of all patients were found to have had symptoms relating to their illness for more or less 5 years, and 18.3%, for more or less 6 months. Looking at the duration of illness by diseases, 28.6% of digestive tract disease patients and had the relating symptoms for about 1 week while 24.3% had had the symptoms for about 5 years, and in diseases of nervous system and and sensory organs, many(33.7%) had had symptoms for relatively long period (more than one year). On the other hand, in diseases of respiratory system, those who had had the relating symptoms for about 1 month was 24.3 % among all patients in this category and those who had had the symptoms for less than 1 week was 32.2%. 4. The duration of illness (complaints) was longer in females than in males and shorter in younger age groups than in older age groups.

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Research on immersive elements to improve the reality of AR / VR content (AR/VR 콘텐츠의 현실감 향상을 위한 몰입 요소 연구)

  • Heo, Junwon;Byun, Daniel H.
    • Trans-
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    • v.13
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    • pp.17-34
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    • 2022
  • This paper summarizes the differences and characteristics between virtual worlds and virtual reality, and advances research on immersive elements for improving the reality of virtual worlds. The immersive elements are broadly studied by separating the sensory immersive elements and the technical immersive elements, focusing on the sensory organs of sight, perception, touch, and hearing, and investigating the correlation between these elements to improve the immersive feeling in content design. Set standards.

Application of Photobiomodulation in Hearing Research: Animal Study

  • Lee, Jae-Hun;Jung, Jae Yun
    • Medical Lasers
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    • v.9 no.1
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    • pp.1-5
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    • 2020
  • Hearing organs have unique characteristics and have a role in processing external sensory signals. Sensory hair cells and nerve fibers in the organ of Corti can be damaged by various causes and they do not regenerate themselves. Medication used for clinical treatment for the inner ear is limited due to the anatomical structure of the inner ear. Photobiomodulation (PBM) is a therapeutic approach that uses various sources of light and the success of PBM therapy is highly reliant on the parameters of the light sources. The positive effects of PBM have been reported in various clinical fields. This paper summarizes the previously reported research on PBM for the treatment of hearing damage in animal models.

The Anatomy and Histoarchitecture of the Olfactory Organ in the Korean Flat-Headed Goby Luciogobius guttatus (Pisces; Gobiidae)

  • Kim, Hyun-Tae;Park, Jong-Young
    • Applied Microscopy
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    • v.46 no.1
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    • pp.51-57
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    • 2016
  • The histology and anatomy of the olfactory organ in Luciogobius guttatus was investigated using a light microscopy and scanning electron microscopy. The paired olfactory organs in the dorsal part of the snout are situated in between the upper lip and the eyes. They consist of two nostrils, one anterior and the other posterior openings, and a single olfactory cavity. The anterior nostril, an incurrent opening, forms a short tubular structure from the skin. The posterior nostril, an excurrent opening, forms a circular structure opened to the exterior. The distributional pattern of the sensory epithelium is a continuous type. The sensory epithelium with numerous-motile cilia is made up of receptor cells, supporting cells, basal cells, and mucous cells. In contrast, the non-sensory epithelium is comprised of stratified epithelial cells and two types of mucous cells, acidic and neutral cells. The cilia number of the receptor cell is in range of 3 to 4 units. Such results in L. guttatus may reflect its ecological habit and microhabitat in the tidal zone with a periodic tide.

Sensory Function Research of Ichthyic Lateral Line and Development of Lateral Line Teaching Aid. (어류의 옆줄 감각기능 연구 및 옆줄 교구 개발)

  • Kwoon, Jung Hyeon;Kim, MI Jeong
    • Korean Educational Research Journal
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    • v.39 no.1
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    • pp.15-38
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    • 2018
  • This study aimed to confirm that the lateral lines of fish indicate water temperature, water pressure, water flow, and sound waves by conducting a direct experiment. To confirm the superiority of fish lateral lines to detect material stimuli after the experimental study of the fish lateral line's sensation function, the lateral line's tissue was expanded and the shape of the lateral side of the fish was created using a 3-D printer to realize the lateral stripe parity. The amplification effect was confirmed by measuring the sound waves, which was the material stimulus of the lateral diagonal parabola. This proved that fish lateral lines are biotechnologically superior sensory organs.

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Mild stimulation of stomach 36 acupuncture point by organic nanoscale SP6 patch improves cellular physiologic functional status of different organs

  • Nazeran, Homer;Blake-Greenberg, Sherry;Haltiwanger, Emily
    • CELLMED
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    • v.2 no.1
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    • pp.10.1-10.6
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    • 2012
  • Acupuncture works by stimulating peripheral sensory nerves and their endings causing an increase in cutaneous blood flow and microcirculation, as well as release of neurotransmitters, neuropeptides, and hormones. SP6 Patch is a nanoscale nontransdermal device that mildly stimulates Stomach 36 (zusanli) and other acupuncture points. As stimulation of these points has been indicated to have an effect on hypothalamic function, it is of great research interest to investigate the effect of SP6 Patch on the physiology of organs that are affected by hypothalamic regulation. Bioelectrical tissue impedance data indicative of cellular physiologic organ function, using an Electro Interstitial Scan (EIS) system, were acquired from hypothalamus, pancreas, liver, intestines, kidneys, thyroid and adrenal glands in 10 (1 male, 9 females) volunteers while wearing the SP6 Patch daily for 1 week. EIS testing was performed at baseline with no patch, 30 min after wearing the patch, and after wearing the patch 12 h/day for 1 week. Subjects were instructed to keep well hydrated during the study period. All subjects served as their own control. The hypothesis was: The SP6 Patch worn 12 h/day on the Stomach 36 acupuncture point for 1 week, may significantly improve cellular physiologic functional status of different organs measured by EIS. All tested organs achieved significant improvement in their functional physiologic status after wearing the SP6 Pach 12 h/day for 1 week compared to baseline with an overall average statistical power > 89%. Based upon these results the hypothesis was accepted as true.

Ultrasensitive Crack-based Mechanosensor Inspired by Spider's Sensory Organ (거미의 감각기관을 모사한 초민감 균열기반 진동압력센서)

  • Suyoun Oh;Tae-il Kim
    • Journal of the Microelectronics and Packaging Society
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    • v.31 no.1
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    • pp.1-6
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    • 2024
  • Spiders detect even tiny vibrations through their vibrational sensory organs. Leveraging their exceptional vibration sensing abilities, they can detect vibrations caused by prey or predators to plan attacks or perceive threats, utilizing them for survival. This paper introduces a nanoscale crack-based sensor mimicking the spider's sensory organ. Inspired by the slit sensory organ used by spiders to detect vibrations, the sensor with the cracks detects vibrations and pressure with high sensitivity. By controlling the depth of these cracks, they developed a sensor capable of detecting external mechanical signals with remarkable sensitivity. This sensor achieves a gauge factor of 16,000 at 2% strain with an applied tensile stress of 10 N. With high signal-to-noise ratio, it accurately recognizes desired vibrations, as confirmed through various evaluations of external force and biological signals (speech pattern, heart rate, etc.). This underscores the potential of utilizing biomimetic technology for the development of new sensors and their application across diverse industrial fields.

Selective and Random Patterning of Programmed Cell Death in Zebrafish Embryonic Development

  • Hwang, Chang-Nam;Kim, Joon;Lee, Sang-Ho
    • Proceedings of the Korean Society of Embryo Transfer Conference
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    • 2002.11a
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    • pp.118-118
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    • 2002
  • Programmed cell death (PCD) is thought as a well-controlled process by which unwanted cells are selectively eliminated. During the last decade many researches have elucidated molecules and their interactions involved in cell death by using largely in vitro induction of cell death or survival signals in a more defined manner, While these critical information and novel findings provide us with clearer understanding of mechanisms underlying cell death, it does by no means explain how PCD occurs and which cells or tissues are affected during normal embryonic development in vivo. In this study, we used zebrafish to examine whether the PCD is occurring selectively or randomly in developing embryos by whole mount in situ TUNEL analysis with specific markers for neural cells. The result revealed that the degree and distribution of TUNEL staining varied considerably throughout gastrulation stage, and there was also a number of TUNEL-negative embryos. Most of TUNEL-positive cells were scattered randomly throughout the blastoderm. During the gastrulation stage about 75 % of the embryos analyzed exhibited more than 5 TUNEL-positive cells. As the dorsal epiblast begins to thicken rather abruptly near the end of gastrulation, TUNEL-positive cells were mainly located along the dorsal side. Although there were some variations in TUNEL staining during segmentation and pharyngeal stages, TUNEL staining continued to be localized to the central nervous system, and was also detected in the sensory organs, trigeminal ganglions, and the primary sensory neurons. High levels of the cell death in developing brain between 20-somite and prim-6 stages are thought to play a role in the morphogenesis and organization of the brain. At prim-16 stage, cell death is considerably reduced in the brain region. Dying cells are mainly localized to the prospective brain region where ectodermal cells are about to initiate neurogenesis. As development progressed, high levels and more reproducible patterns of cell death were observed in the developing nervous system. Intensive TUNEL staining was restricted to the trigeminal ganglions, the primary sensory neurons, and sensory organs, such as olfactory pits and otic vesicles. Thus, PCD patterning in zebrafish embryos occurs randomly at early stages and becomes restricted to certain region of the embryos. The spatio-temporal pattern of PCD during the early embryonic development in zebrafish will provide basic information for further studies to elucidate genes involved in. regulation of PCD largely unknown in vivo during vertebrate embryogenesis.

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The Anatomy and Histology of the Olfactory Organ in the Korean Sand Goby Favonigobius gymnauchen (Pisces, Gobiidae) (한국산 날개망둑 Favonigobius gymnauchen (Pisces, Gobiidae) 후각기관의 해부 및 조직학적 연구)

  • Kim, Hyun Tae;Kim, Hyeong Su;Park, Jong Young
    • Korean Journal of Ichthyology
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    • v.28 no.1
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    • pp.28-34
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    • 2016
  • The anatomy and histology of the olfactory organ in Favonigobius gymnauchen was investigated using a stereo microscopy, light microscopy and scanning electron microscopy. The paired olfactory organs in the dorsal snout are set in between the upper lip and the eyes. These organs are composed of two openings (anterior nostril with a tubular structure and posterior nostril), a single olfactory cavity, two nasal sac (ethmoidal and lacrimal sacs), olfactory nerve and olfactory bulb. The distributional pattern of the sensory epithelium is a only one type (continuous type). This epithelium is made up of the receptor cell, supporting cell and basal cell. The receptor cell has a only one type (ciliated receptor cell with 3~4 cilia). The non-sensory epithelium is built of the stratified epithelial cells and has mucous openings on the surface. Such an olfactory organ in F. gymnauchen may be considered to reflect its ecological habitat as a shallow water or tidal pool in the coastal zone.

Extraction of Face Type and Tongue Color Analysis for Diseases Diagnosis in Web-Based Environments (웹 기반 환경에서 질병 진단을 위한 얼굴형 추출 및 설색 분석)

  • Cho, Dong-Uk;Kim, Bong-Hyun;Lee, Se-Hwan
    • The KIPS Transactions:PartB
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    • v.14B no.2
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    • pp.71-80
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    • 2007
  • In this paper, We propose face type classification, tongue region extraction and tongue color analysis method for Oriental medicine diagnosis system to supply web based medical treatment information. This presents to construct system that takes super aging society and uses ocular inspection and longue diagnosis in web-based to embody this by an IT Technology as generalization and popularization of medical benefit are social requirement and supplies medical treatment information. Place that reflect living body signal of human body ordinarily and appear becomes iris or tongue, five sensory organs etc. This paper proposes classification of face type, extraction of five sensory organs for observing a person's shape and color among diseases diagnosis based on home health care that propose to develop and region extraction and color analysis etc, of tongue which intensively represents the bio-signals of human-beings. Finally, the effectiveness of this paper is verified by several experiments.