• 제목/요약/키워드: sensory threshold

검색결과 126건 처리시간 0.033초

요추추간판탈출증군과 단순요통군간의 Current Perception Threshold상의 차이에 관한 연구 (The study of difference between HIVD group and simple low back pain group by Current Perception Threshold test)

  • 김철홍;이병훈;권혜연;임춘우;서정철;윤현민;송춘호;장경전;안창범
    • Journal of Acupuncture Research
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    • 제18권6호
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    • pp.59-69
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    • 2001
  • Objective : The aim of this study is to assess the ability of the CPT test to dignosis radiculopathy in Korean with NeuvalTM CPT database. Method : Electrical stimulation(at 2000, 250, and 5Hz) using Neurometer was applied to the 19 patients who felt back and sciatic pain with herniated intervertevral disc(HIVD) of L-spine, dignosisd by lumbar CT or MRI, and the 33 patients who felt only back or hip or leg pain without HIVD, stenosis, spondylolisthesis which causing radiculopathy. The test sites were toe1, toe3 and toe5 related to L4, L5 and S1 nerve roots. Results : The mean values of the CPT of HIVD group was stiatically lower than LBP group at toe1-250Hz, toe3-2000Hz, 250Hz and toe5-250Hz, 5Hz. The grading CPT score of HIVD group was stastically higher than LBP group at the toe3(L5). The VAS of HIVD group was stastically higher than LBP group. Conclusion : These results suggest that the CPT test can be a valuable testing for diagnosing radiculopathy in Korean. In using CPT test further study is needed for the diagnosis and evaluation of sensory nerve dysfunction in the musculoskeletal disease.

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Collective Prediction exploiting Spatio Temporal correlation (CoPeST) for energy efficient wireless sensor networks

  • ARUNRAJA, Muruganantham;MALATHI, Veluchamy
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제9권7호
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    • pp.2488-2511
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    • 2015
  • Data redundancy has high impact on Wireless Sensor Network's (WSN) performance and reliability. Spatial and temporal similarity is an inherent property of sensory data. By reducing this spatio-temporal data redundancy, substantial amount of nodal energy and bandwidth can be conserved. Most of the data gathering approaches use either temporal correlation or spatial correlation to minimize data redundancy. In Collective Prediction exploiting Spatio Temporal correlation (CoPeST), we exploit both the spatial and temporal correlation between sensory data. In the proposed work, the spatial redundancy of sensor data is reduced by similarity based sub clustering, where closely correlated sensor nodes are represented by a single representative node. The temporal redundancy is reduced by model based prediction approach, where only a subset of sensor data is transmitted and the rest is predicted. The proposed work reduces substantial amount of energy expensive communication, while maintaining the data within user define error threshold. Being a distributed approach, the proposed work is highly scalable. The work achieves up to 65% data reduction in a periodical data gathering system with an error tolerance of 0.6℃ on collected data.

전기 치수 검사 시 역치 자극 이후 과용(過用) 자극 시간의 측정 (MEASUREMENT OF THE EXCESSIVE STIMULUS TIME AFTER THE SENSORY THRESHOLD LEVEL DURING ELECTRIC PULP TESTING)

  • 남기창;안선희;김수찬;김덕원;이승종
    • Restorative Dentistry and Endodontics
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    • 제29권3호
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    • pp.226-232
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    • 2004
  • Use of electric pulp testing elicits painful response in vital teeth. In this study, we examined the excessive time from pain feeling to stimulation disconnection in clinical situation. D626D (Parkell Inc., USA.) scan type electric pulp tester was used in total of 23 young healthy individuals. Each of the right central incisors and first premolars were used as testing teeth. Stimulation disconnection was achieved by EMG in anterior belly of digastric muscle, finger span, and voice and the excessive stimulation time over the sensory thresh-old was recorded. As a result, we found that the short responses before the stimulation disconnection appeared following order:EMG, finger span, and voice. The EMG disconnection is suggested to be used to reduce the excessive stimulus time in electric pulp testing.

죽력(竹瀝)과 천축황(天竺黃)이 Streptozotocin으로 당뇨가 유발된 백서의 혈당강하 및 말초신경기능회복에 미치는 영향 (The Effects of Bambusae caulis in liquamen and Bambusae concretio silicae on Blood Sugar Reduction and Improvement of Peripheral Nerve Function in Diabetic Rats Induced with Streptozotocin)

  • 박수곤;배길준;이욱재;김선종;정민영
    • 한방재활의학과학회지
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    • 제24권1호
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    • pp.13-30
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    • 2014
  • Objectives This study was designed to investigate the effects of Bambusae caulis in liquamen and Bambusae concretio silicae on blood sugar reduction and improvement of peripheral nerve function in diabetic rat models. Methods Diabetic rat models induced by streptozotocin were divided into five groups. We fed experimental group I of rats basal diet and administered normal saline (3 ml, 1 time/1 day) for 6 weeks. We fed experimental group II of rats basal diet and administered Bambusae caulis in liquamen (100 mg/kg, 1 time/1 day) for 6 weeks. We fed experimental group III, IV, V of rats basal diet and administered Bambusae concretio silicae (100 mg/kg, 200 mg/kg, 400 mg/kg once a day) for 6 weeks. We investigated weight and glucose level of rats, and carried out touch test, hot plate test, sensory & motor nerve conduction velocity test and immunohistochemical study after 48 hours, 2 weeks, 4 weeks and 6 weeks. Results 1. The weight of all experimental group was gradually decreased. And glucose level was significantly decreased in the experimental group II, III, IV, V as compared with experimental group I. Especially experimental group II, IV, V were significantly decreased as compared with experimental group III. 2. In the quantitative analysis by touch test and hot plate test, mechanical pain threshold and heat pain threshold were significantly decreased in the other experimental groups as compared with experimental group I. Especially experimental group II, IV, V were significantly decreased as compared with experimental group III. 3. In the sensory and motor nerve conduction velocity test, sensory and motor nerve conduction velocity were significantly increased in the other experimental groups as compared with experimental group I. Especially experimental group II, IV, V were significantly increased as compared with experimental group III. 4. In the substance P immunohistochemical study, experimental group II, IV, V showed strong immune response in spinal cord. Conclusions Bambusae caulis in liquamen and Bambusae concretio silicae were probably useful to treat patients with diabetic peripheral neuropathy.

정량적 감각 검사: 한국인에서의 연령별 정상 범위 및 당뇨병성 다발신경병증에서의 유용성 평가 (Quantitative Sensory Test: Normal Range in Korean Adults and Application to Diabetic Polyneuropathy)

  • 김수현;안석원;김성민;홍윤호;박경석;성정준;이광우
    • Annals of Clinical Neurophysiology
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    • 제12권1호
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    • pp.21-26
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    • 2010
  • Background: Although quantitative sensory test (QST) is being used with increasing frequency for measuring sensory thresholds in clinical practice and epidemiologic studies, there has been no age-matched normative data in Korean adults. The objective of this study is to evaluate the value of QST in diabetic polyneuropathy with normal range in Korean adults. Methods: The Computer Aided Sensory Examination IV 4,2 (WR Medical Electronics Co., Stillwater, Minnesota, U.S.A.), with 4,2,1 stepping algorithm was used to determine vibration and cold perception threshold in 70 normal controls and 19 patients with diabetic polyneuropathy aged from 21 to 79 years. The data were used to define age-matched upper and lower normal limits and normal range of side to side difference. We also evaluated the duration of diabetes, serum HbA1C level, and findings of nerve conduction study (NCS) and QST in patients with diabetic polyneuropathy. Results: In normal adults, sensory thresholds slightly increased with age, and a slight side-to-side difference was observed. The diagnostic sensitivity of QST was not higher than NCS in patients with diabetic polyneuropathy (36.8% vs. 42.1%, p=0.716), especially among elderly patients. Conclusions: QST might be used as a complementary test for NCS in the diagnosis of diabetic polyneuropathy. Although the QST is a simple method for the evaluation of peripheral nerve function, there are some limitations. Most of all, because the QST measuring is dependent on the subjective response of patients, the degree of concentration and cooperation of the patients can significantly affect the result. And thus, attention should be paid during the interpretation of QST results in patients with peripheral neuropathy.

A comparison of Echium, fish, palm, soya, and linseed oil supplementation on pork quality

  • Barbara Elizabeth van Wyngaard;Arno Hugo;Phillip Evert Strydom;Foch-Henri de Witt;Carolina Henritta Pohl;Arnold Tapera Kanengoni
    • Animal Bioscience
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    • 제36권9호
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    • pp.1414-1425
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    • 2023
  • Objective: Long chain n-3 polyunsaturated fatty acids (PUFA) exert positive effects on human health. The long chain n-3 PUFA of pork can be increased by adding fish oil to the diet. Due to the cost and availability of fish oil an alternative source must be found. Methods: This study evaluated the effect of five dietary oils on meat quality, fatty acid composition and lipid stability. The five diets contained 1% palm oil (Control), 1% soya oil, 1% linseed oil, 1% fish oil, and 1% Echium oil, respectively. The trial consisted of 60 gilts, randomly allocated to five groups. Results: All color parameters, extractable fat content, fat free dry matter, and moisture content of the m. longissimus muscle were unaffected by dietary treatment. Consumers and a trained sensory panel could not detect a difference between the control samples and the Echium oil sample during sensory analysis. Samples containing higher levels of PUFA (soya, linseed, fish, and Echium oil) had higher levels of primary and secondary lipid oxidation products after refrigerated and frozen storage. However, these values were still well below the threshold value where off flavors can be detected. The Echium oil treatment had significantly higher levels of long chain PUFA than the linseed oil treatment, but it was still significantly lower than that of the fish oil treatment. Conclusion: Echium oil supplementation did not increase the levels of n-3 to the same extent as fish oil did. The result did however suggest that Echium oil can be used in pig diets to improve muscle long chain n-3 fatty acid content without any adverse effects on meat quality when compared to linseed, soya, and palm oil.

젊은 한국 여성의 구강안면영역에서 절대적 온도역치와 상대적 온도역치간의 비교 (Comparison of absolute and relative thermal QST thresholds In the orofacial region of the young Korean women)

  • 김기석
    • Journal of Oral Medicine and Pain
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    • 제38권4호
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    • pp.367-372
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    • 2013
  • 신경손상과 관련된 감각이상의 평가 시 정량적 감각 신경검사법 중의 하나인 열역치검사법을 사용하며 환자의 열 자극에 대한 역치 값은 건강한 집단을 대상으로 하여 얻은 정상치 (절대값)와 비교하거나 손상부와 대응되는 비이환측에서 측정한 값 (상대값)과 좌우 비교를 통해 정상여부를 판단한다. 기존의 문헌들을 통해 상대값을 이용한 좌우비교가 집단의 절대값을 이용한 방법보다 감각신경의 이상을 판단하는데 더 효율적이라고 알려져 있지만 구강안면부에서 절대값에 대해 상대값이 갖는 효율성 여부와 그 정도에 대한 연구가 부족하기에 이번 연구를 통해 구강안면부에서 상대값의 타당도를 평가하고 절대값과 효율성을 비교하고자 하였다. 19명의 건강한 성인여성을 대상으로 이마, 뺨, 이부, 하순, 혀의 양측에 정량적 온도역치검사를 시행하여 상대 값과 절대값에 대한 평균과 표준편차를 계산하였다. 연구를 통해 각 구강안면부에서 상대값을 이용한 좌우비교 시 유의한 차이가 없었으며 대부분 유의한 상관관계를 보였으며 절대값을 이용한 방법에 비해 최대 4.6배 작은 표준편차를 보였다. 결론적으로 구강안면부에서 상대값을 이용한 정량적 온도역치검사법은 타당도가 있으며 절대값을 이용한 방법에 비해 감각신경의 이상을 판단하는데 유리하다고 볼 수 있다.

담배 이분(泥粉)으로부터 향을 생성하는 효모의 분리, 동정 및 그 향의 관능적 특성에 관한 연구 (Identification of Yeasts Producing Flavor from Tobacco Powder and the Organoleptic Properties of Their Products)

  • 송치현;강은희;박은수
    • 한국연초학회지
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    • 제3권2호
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    • pp.95-102
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    • 1981
  • From various sources of natural habitat yeasts, which coo 14 transform the constituents of tobacco Powder into flavors, were isolated and three isolates. YOII, M4-1, and M 19-1, were selected These were identified, by their biological characteristics, as Hansenuia ciferri, Pichia acaciae and Candida tropicalis, respectively. Their ferments were extracted with petroleum ether and fractionated into basic, neutral and acidic fractions. The major organoleptic properties of the fermented flavors were detected in the neutral fractions by the sensory test and the yields and threshold values of those fractions were determined and the organoleptic characteristics were described as well.

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Mechanism and regulation of body malodor generation (1) -Effect of iron in axillary malodor and using an antioxidant as a deodorant-

  • Ichinose, N.;lida, S.;Gomi, T.;Someya, K.;Hirano, K.;Ogura, M.;Yamazaki, S.;Sakurai, K.
    • 대한화장품학회:학술대회논문집
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    • 대한화장품학회 2003년도 IFSCC Conference Proceeding Book II
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    • pp.139-144
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    • 2003
  • Using GC/MS and GC/Olfactmetry analysis, we identified two vinyl ketones such as 1-Octen-3-one (OEO) and cis-1, 5-Octadien-3-one (ODO) as key materials in axillary odor. OEO and ODO showed a strong metallic odor and low odor threshold. These two materials were occurred from the reaction of unsaturated long fatty acids in lipids and the iron ion in our body's metabolism. Then, it was recognized that Morus alba (Japanese name, Kuwa) extract, one of the plant extract, showed a very good effect to control the generation of these vinyl ketones due to its remarkable anti-oxidization effects.

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사람유두종바이러스 백신접종 후 발생한 소섬유신경병과 기립빈맥증후군 (Small Fiber Neuropathy and Postural Orthostatic Tachycardia Syndrome after Human Papillomavirus Vaccination)

  • 이채원;임영민;고명아;김현진;김광국
    • 대한신경과학회지
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    • 제36권4호
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    • pp.318-321
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    • 2018
  • We describe a 44-year-old woman with paresthesia, fatigue, and palpitation, 10 days after human papillomavirus (HPV) vaccination. The quantitative sensory test showed abnormal detection threshold in her foot. Tilt test result indicated postural orthostatic tachycardia syndrome. Symptoms were improved after immunomodulating therapy, pain control drug, and oral beta blocker medication. This is first case report for small fiber neuropathy and autonomic dysfunction after HPV vaccination in Korea.