• Title/Summary/Keyword: quantitative sensory test

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Quantitative vibratory sense measurement systems of a diabetic neuropathy (당뇨병성 신경병증의 정량적 진동 감각 측정 시스템)

  • Ryu, Bong-Jo;Kim, Youngshik;Koo, Kyung-Wan
    • Journal of Digital Contents Society
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    • v.19 no.4
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    • pp.615-620
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    • 2018
  • Evaluation of clinical usefulness of current perception threshold test and vibration sense perception threshold test in diagnosing the diabetic poly-neuropathy patients is one of the diagnosis methods for diabetic poly-neuropathy. Up to the present, some diagnostic methods were used for diabetic poly neuropathy patients. For example, there are neuropathy impairment score test of lower limbs, nerve conduction test, cooling detection threshold test, heat-pain threshold test and so on. However, most of the above tests require very expensive cost and take a lot of time in test. In this paper, a new apparatus estimating vibration sense ability is introduced. For this purpose, the VCM(voice coil motor) stimulating patient's peripheral nerve and current amplifier were manufactured. Also, softwares sensing and driving the vibration detection threshold test in order to measure the quantitative vibration sensory levels in diabetic poly-neuropathy patients were developed.

Studies on the Sensory Characteristics of Korean Tea and Related Products (국산차(國産茶)의 관능적 품질특성에 관한 연구)

  • Lee, Cherl-Ho;Hong, Sung-Hie;Hwang, Sung-Yun;Shin, Ae-Ja
    • Journal of the Korean Society of Food Culture
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    • v.2 no.2
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    • pp.133-147
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    • 1987
  • The sensory quality characteristics of 7 different types of Korean traditional tea products were analyzed. For the standardization of sensory testing condition, the optimum drinking temperature were measured with 50 students, and all the samples tested were found to fall in the range of $60-70^{\circ}C$. The optimum concentrations of tea for drinking were generally met with the amount recommended by the producer. A total of 45 sensory describing terms expressing the taste, odor, and mouthfeel were collected. Using the sensory describing terms as the character notes, flavor profile analysis was made for each tea product with 8 members of trained panel. The differences in quality characteristics of 29 test samples were evaluated and shown in the chart constructed by the quantitative descriptive analysis method.

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Effects of Added Corn Starches on Sensory Characteristics of Acorn Mooks(Starch Gels) (옥수수 전분을 혼합한 도토리묵의 관능적 특성)

  • Park, Sang-Ok;Kim, Kwang-Ok
    • Korean Journal of Food Science and Technology
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    • v.20 no.4
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    • pp.613-617
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    • 1988
  • This study was undertaken to observe the effects of partial replacement of acorn starch with dent, cross-linked, or acid modified corn starches, and of refrigeration on sensory characteristics of acorn mooks(starch gels). Triangle test was used to determine if there were noticeable differences among the monks. In order to find the source of differences, various sensory properties of the monks were evaluated with quantitative descriptive analysis on unstructured scale. The results indicated that added corn starches affected significantly most of the sensory characteristics evaluated. Control acorn monks had greater intensities in color, clarity, bend property, firmness and cohesiveness. Monks containing cross-liked corn starch were more similar to control than the other mixed starch monks, fresh or refrigerated.

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Difference of Sensory Changes by Central and Peripheral Stimulation for Improving Life Care in Chronic Low Back Patients (만성 허리통증환자의 라이프 케어 증진을 위한 중추성과 말초성 자극에 따른 감각변화의 차이)

  • Kim, Kyung-Yoon;Park, Chi-Bok
    • Journal of Korea Entertainment Industry Association
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    • v.14 no.8
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    • pp.221-230
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    • 2020
  • This study aimed to investigate the difference of sensory changes by central and peripheral stimulation for improving life care in chronic low back pain patients. Twelve chronic low back pain patients were randomly assigned to central stimulation (CS, n=6) and peripheral stimulation (PS, n=6). Quantitative sensory test (QST), pressure pain threshold (PPT) and Korean oswestry back pain disability index (KODI) were used to quantitatively measure and analyze. As a result, QST, PPT and KODI showed significant differences by period (p<.01) but did not showed any difference between the two groups (p>.05). Therefore, both stimulations had significant effects on increased sensory threshold and function improvement of the muscles that became sensitive due to pain. It is thought to be significant in improving life care for patients with chronic low back pain.

Quantitative Descriptive Analysis and Acceptance Test of Low-salted Sauerkraut (fermented cabbage) (저염 Sauerkraut (fermented cabbage)의 정량적 묘사분석 및 기호도 연구)

  • Ji, Hye-In;Kim, Da-Mee
    • Journal of the Korean Society of Food Culture
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    • v.37 no.3
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    • pp.239-247
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    • 2022
  • This study evaluated the sensory characteristics of sauerkraut prepared by adding 0.5, 1.0, 1.5, 2.0, and 2.5% (w/w) sea salt to cabbage. The quantitative descriptive analysis (QDA) and acceptance test of sauerkraut were determined for each salt concentration, and the principal component analysis (PCA) and partial least square regression (PLSR) analysis were performed to confirm the correlation between each factor. Results of the QDA determined 14 descriptive terms; furthermore, brightness and yellowness of appearance and the sour, salty, and bitter flavors differed significantly according to the salt concentration. Results from the PCA explained 22.56% PC1 and 65.34% PC2 of the total variation obtained. Sauerkraut prepared using 0.5, 1.0, and 1.5% sea salt had high brightness, moistness, sour odor, green odor, sour flavor, carbonation, hardness, chewiness, and crispness, whereas sauerkraut prepared with 2.0 and 2.5% sea salt had high yellowness, glossiness, salty flavor, sweet flavor, and bitter flavor. Hierarchical cluster analysis classified the products into two clusters: sauerkraut of 0.5, 1.0, and 1.5%, and sauerkraut of 2.0 and 2.5%. Results of PLSR determined that sauerkraut of 1.0 and 1.5% were the closest to texture, taste, and overall acceptance. We, therefore, conclude that sauerkrauts prepared using 1.0 and 1.5% sea salt have excellent characteristics in appearance, taste, and texture.

Volatile Flavor Components and Sensory Evaluation of Mold Fermented Sausages (곰팡이 발효소시지의 향기성분 분석 및 관능검사)

  • 김창한;고명수;이광형;박상진;김정환;임대석;박우문;유익종;이치호
    • Food Science of Animal Resources
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    • v.18 no.3
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    • pp.255-260
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    • 1998
  • The aroma concentrates from mold fermented sausages were isolated by steam distillation and simultaneous steam-distillation-extraction(SDE). methods. Quantitative estimation of the aroma concentrates in mold fermented sausages was carried out by using GC-MC. Mold fermented sausages were manufactured into two types. The first was manufactured with starter culture containing Lactobacillus plantarum and Staphylococcus carnosus(LP). The second was manufactured with starter culture containing L. curvatus and S. carnosus(LC). The aroma concentrates containing hexanoic acid and 2-butyl-2-octenal were identified in mold fermented sausages immediately after manufacture. After 28 days, the volatile flavor components from LP and LC were determined to be 14 (trimethylsilylester of hexadecanoic acid and 2-methyl-3-octanol, etc.) and 16 substances(hexadecanoic acid and 1-hexadecanol, etc.), respectively. The distribution of aroma concentrates in LP and LC was different, but their panel test placed them in similarity.

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

  • Lee, Chaewon;Lim, Young-Min;Ko, Myung-A;Kim, Hyunjin;Kim, Kwang-Kuk
    • Journal of the Korean neurological association
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    • v.36 no.4
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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.

The Preliminary Study for Normative Current Perception Threshold values in the Korean Adults (성인의 Current Perception Threshold 예비조사)

  • Park, Dae-Gyu;Chun, Sung-Hong;Jeon, Jae-Soo;Kim, Yong-Ik;Hwang, Kyung-Ho;Park, Wook
    • The Korean Journal of Pain
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    • v.10 no.1
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    • pp.5-10
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    • 1997
  • Background : The Current Perception Threshold (CPT) provides an objective, quantitative gauge of sensory nerve integrity which is obtainable from any cutaneous site. CPT measurement can confirm and quantify or rule out dysfunction of nerve through comparison with established normative values ($Neuval^{TM}$ CPT database). The aim of this study is to compare collected data from Korean adults with $Neuval^{TM}$ CPT database. Method : Normative data from 5 standard test site in face, hand, toe were obtained from 50 healthy adults. Three frequencies(5, 250, 2000 Hz) were stimulated with $Neuromoter^{(R)}$ CPT device. Results : The results of our data were statistically significantly different than Neuval data except in face, but within normal range. Sensory Threshold increased as the frequency of the stimulus changed from 5 Hz to 250 Hz to 2000 Hz., and from face to hand to toe. Conclusion : CPT testing is a valuable neurologic testing modality that is noninvasive and highly reliable for diagnosis and evaluation of sensory nerves where neuropathy is suspected.

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Quantitative Evaluation of Median Nerve Motor Function in Carpal Tunnel Syndrome Using Load Cell : Correlation with Clinical, Electrodiagnostic, and Ultrasonographic Findings

  • Kim, Dong Hwan;Park, Sung Bae;Lee, Sang Hyung;Son, Young-Je;Chung, Gih Sung;Yang, Hee-Jin
    • Journal of Korean Neurosurgical Society
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    • v.54 no.3
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    • pp.232-235
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    • 2013
  • Objective : Major complaints of carpal tunnel syndrome (CTS) are sensory components. However, motor deficit also impedes functional status of hand. Contrary to evaluation of sensory function, the objective, quantitative evaluation of median nerve motor function is not easy. The motor function of median was evaluated quantitatively using load cell and its correlation with findings of electrodiagnostic study (EDS) was evaluated. Methods : Objective motor function of median nerve was evaluated by load cell and personal computer-based measurement system. All of the measurement was done in patients diagnosed as having idiopathic CTS by clinical features and EDS findings. The strength of thumb abduction and index finger flexion was measured in each hand three times, and the average value was used to calculate thumb index ratio (TIR). The correlation of TIR with clinical, EDS, and ultrasonographic findings were evaluated. Results : The TIR was evaluated in 67 patients (119 hands). There were 14 males and 53 females, mean age were 57.6 years (range 28 to 81). The higher preoperative nerve conductive studies grade of the patients, the lower TIR was observed [p<0.001, analysis of variance (ANOVA)]. TIR of cases with thenar atrophy were significantly lower than those without (p<0.001, t-test). TIR were significantly lower in patients with severe median nerve swelling in ultrasonography (p=0.042, ANOVA). Conclusion : Measurements of median nerve motor function using load cell is a valuable evaluation tool in CTS. It might be helpful in detecting subclinical motor dysfunction before muscle atrophy develops.

A Study on the Quality Characteristics of Makpyeon Prepared with Dry Milled Rice Powder (건식 쌀가루를 이용한 막편의 품질특성)

  • Jo, Yun Ju;Yoon, Hye Hyun
    • Journal of the Korean Society of Food Culture
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    • v.31 no.3
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    • pp.235-242
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    • 2016
  • The purpose of this study was to investigate the quality characteristics of makpyeon prepared with dry milled rice powder. The makpyeon samples prepared with dry milled rice powder and various amount makgeolli (0% (CON), 25% (M25), 50% (M50), 75% (M75), 100% (M100)), and analyzed for moisture content, pH, Hunter's color value, TPA and sensory evaluation. The moisture content did not showed significant difference among makpyeon samples. The L-value, a-value resulted in that CON showed the highest and decreased with the amount of makgeolli. The b-value of makpyeon samples showed that CON was the lowest and increased with the amount of makgeolli. TPA resulted in that M100 showed the highest hardness and the lowest adhesiveness, cohesiveness. Chewiness and gumminess of makpyeon samples were higher than those of CON. Based on quantitative descriptive analysis, the score of brightness, moistness, particle size and gloss of showed higher in CON that in makpyeon samples, firmness increased with the amount of makgeolli. Flavor attributes of liquor odor, sour odor, fermentation odor of makpyeon was stronger in makpyeon samples that in CON with the amount of makgeolli. Acceptance test resulted in makpyeon made with CON, 100% of makgeolli (M100) showed the significantly highest score in taste and overall acceptance.