• Title/Summary/Keyword: Sensory System

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Review of the changes of proprioceptive sensory information (고유수용성 감각 정보의 변화에 관한 고찰)

  • Kang, Jong-Ho;Bang, Hyun-Soo;Kim, Jin-Sang
    • PNF and Movement
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    • v.5 no.1
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    • pp.19-28
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    • 2007
  • Proprioception means the ability to perceive the sensation of position and movement of body. As it is transmitted to central nervous system and used in feed-back or feed-forward motor control, proprioception allows us to keep our normal movement and normal balance activity. However, the conditions such as injury, disease, aging and fatigue can damage the proprioceptiive sensation of position, movement and lead to a functional impairment and additional damages in musculoskeletal system, because they alter the amount of proprioceptive ability that transfer into the central nervous system. The purpose of this study was to identify the definition and the function of proprioception, to look into variations in injury, disease, aging and fatigue that can be easily met in clinical application and eventually to provide valuable aid for assessment and treatment.

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Analysis of Volatile Compounds in the Gardenia Absoulute Oil (Gardenia Absolute Oil을 구성하고 있는 휘발성 성분의 분석)

  • Ha, Chang-Gyu;Yang, Hae-Ju;Yun, Seok-Sin
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.19 no.1
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    • pp.31-56
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    • 1993
  • The characteristic aroma of Gardenia Absolute Oil made from Gardenia Jasminoides Ellis was investigated by GC and GC-MSD and by sensory evaluation The method of GC Analysis was used Double Column System by Carbowax 20M /SPB-1 of Pola/nonPola columns. And the result data of analysis was checked automatic Relent ion Indexs Match System by GC Workstation. A total of 51 compounds were identified in Gardenia Absolute Oil, including t entatively erstimated 9 compounds. The major components were Linalool, Farnesene of various form, Jasmin Lactone, Gamma undecalactone and Cis-3-hexone derivatives.

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Adaptation of Sensory Nerve Afferents for Selective Elicitation of Tactile Sensations (감각의 순응을 이용한 선택적 감각유발 가능성)

  • An, Boyoung;Ma, Joohyung;Hwang, Sun Hee;Song, Tongjin;Khang, Gon
    • Journal of the Korean Society for Precision Engineering
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    • v.32 no.10
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    • pp.845-850
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    • 2015
  • This study was designed to investigate the feasibility of utilizing an adaptation for selective elicitation of tactile sensations by means of transcutaneous electrical stimulation. We conducted the first experiment to investigate how the stimulation frequency affected the adaptation. Twenty healthy subjects participated in the second experiment to confirm our proposal that the perception intensity of the low-frequency vibration can be enhanced after a high-frequency adaptation, and vice versa. It was found that (1) a low-frequency stimulation did not adapt the nerve afferents responsible for the high-frequency vibration, (2) a high-frequency stimulation affected the nerve afferents responsible for the low-frequency vibration, but adapted to the pressure sensation more intensely, and (3) more than 62% of the subjects reported a more clear selective sensation after the adaptation had lessened or depressed the unwanted sensation. The observations showed that adaptation of the nerve afferent could be utilized for selective elicitation of tactile sensations.

Effects of the High-Heeled Shoes on the Sensory System and Balance in Women (높은 굽 신발이 감각계의 변화와 균형에 미치는 영향)

  • Kim, Won-Ho;Park, Eun-Young
    • Physical Therapy Korea
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    • v.4 no.2
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    • pp.10-17
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    • 1997
  • The purpose of this study were to compare light touch, two-point discrimination, position sense, and static balance ability and to examine the relationship of static balance ability and different senses in those who are wearing various heights of high-heeled shoes. Each 29 women was classified two different heights (below 3 cm, above 7 cm) by experience in wearing shoes. A t-test was used to determine the differences between low- and high-heeled shoe in light touch, two-point discrimination, position sense, and static balance ability. Pearson correlation was used to examine the relationship of static balance ability to these sensation. The results were as follows: 1) No significant differences in average light touch, position sense between two groups were found(p>0.05). But significant differences in average two-point discrimination, static balance ability were found(p<0.05). 2) Static balance ability was not significantly correlated with light touch, position sense, two-point discrimination(p>0.05). The results suggest that long time experience in wearing high-heeled shoe may be caused local sensory change and decreased static balance ability. Even though, static balance ability was not significantly affected but correlated with two-point discrimination, position sense, and light touch in order.

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Quality Characteristics and Antioxidant Activities of Rehmannia glutinosa JungKwa Prepared with Different Kinds of Sugars (당종류를 달리하여 제조한 지황정과의 품질특성 및 항산화성)

  • Kim, Hyun Jeong;Min, Sae Rom;Kim, Mee Ree
    • Korean journal of food and cookery science
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    • v.30 no.1
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    • pp.76-83
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    • 2014
  • In this study, we have investigated the quality characteristics and antioxidant activities of Rehmannia glutinosa JungKwa (RJ) prepared with different types of sugars (sucrose, isomalto-oligosaccharide, honey or sorbitol). Moisture content was the highest in RJ with honey. The pH level was the highest in RJ with sorbitol, whereas the acidity is the highest in honey. The reducing sugar content is the highest in RJ with honey. The L and a values of Hunter color system showed the highest in RJ with honey, while the b value the highest in RJ with sorbitol. The hardness of texture profile analyses represented the lowest in RJ with sorbitol. Sensory results showed that RJ with sugar was the best in the sensory preference test. The total phenol content was the highest in RJ with honey, while the lowest in RJ with sorbitol. The antioxidant activity determined by $IC_{50}$ values of DPPH and hydroxy radical scavenging activities was the highest in RJ with honey. From these results, it was suggested that RJ with honey show the highest antioxidant activity.

Gait Training Strategy by CPG in PNF with Brain Injured Patients (고유수용성 신경촉진법에서 CPG를 이용한 뇌손상자 보행훈련전략)

  • Bae Sung-soo
    • The Journal of Korean Physical Therapy
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    • v.17 no.1
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    • pp.108-122
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    • 2005
  • The gait training strategy in very important things for central nervous system(CNS) injury patients. There are many method and strategy for regaining of the gait who had CNS injury. A human being has central pattern generator(CPG) is spinal CPG for locomotion. It is a neural network which make the cyclical patterns and rhythmical activities for walking. Sensory input from loading and hip position is essential for CPG stimulation that makes the central neural rhythm and pattern generating structure. From sensory input, the proprioceptive information facilitate proximal muscles that controlled in voluntarily from cortical level and visual and / or acoustical information facilitate distal muscles that controlled voluntarily from subcortical level. Gait training method can classify that is functional level and structural level. Functional level includ level surface gait, going up and down the stair. It is important to facilitate a guide tempo in order to activate the central pattern generators. During the functional test or functional activities, can point out the poor period in gait that have to be facilitate in structural level. There are many access methods with patient position and potentiality. The methods are using of rhythmic initiation, replication and combination of isotonic with standing position. Clinically using it on weight transfer onto the stance leg, loading response, loading response and pre-swing, terminal stance, up and downwards stairs.

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Quality Characteristics and Antioxidant Activities of Yanggaeng Added with Viscum album Extracts (겨우살이 추출물 첨가 양갱의 품질특성 및 항산화활성)

  • Yoo, Sujung;Yoo, Dongjin;Kim, Changeun;Kim, Soohyun
    • The Korean Journal of Community Living Science
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    • v.28 no.1
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    • pp.93-101
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    • 2017
  • This study was conducted to assess the quality characteristics and antioxidant activity of yanggaeng prepared with different concentrations of Viscum album extracts (VAE; 0, 1, 3 and 5%). The moisture content ranged from 37.85% to 39.38%, exhibiting no significant differences between the groups. The pH level of VAE 5% added yanggaeng was the lowest, followed in order by 3% and 1% additions. Increasing the amount of VAE in yanggaeng tended to increase acidity. The lightness value of the Hunter color system decreased based on the amount of VAE concentrate added to yanggaeng. As VAE content increased, changes in hardness, gumminess, and brittleness were all significant (p<0.05). Characteristics of cohesiveness and springiness showed no significant differences. Total polyphenol content was the highest in VAE 5% added yanggaeng. Antioxidant activities such as DPPH radical scavenging activity of the control group was 2.29%, whereas groups with added VAE ranged from 7.52~28.05%. As VAE increased, antioxidative activity also increased. In the sensory evaluation, yanggaeng addition with VAE 3% had excellent scores for bitterness, moistness, and overall acceptability. Yanggaengs with moderate levels of VAE 3% are recommended (with respect to overall preference score) to take advantage of the functional properties of VAE without sacrificing consumer acceptability.

Enhanced Efficacy of the Commissural Transmission between Lateral Giants in the Sensitization of Crayfish Escape Behavior

  • C.Lee, Sun-Hee
    • The Korean Journal of Physiology
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    • v.29 no.2
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    • pp.291-299
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    • 1995
  • Lateral giant (LG)-mediated escape response of crayfish is sensitized by natural traumatic events. Such sensitization has previously been shown to be associated with increased transmission between primary afferents and sensory interneurons at the cholinergic synapse of LG escape reflex circuit. In the present study, it was firstly investigated as to whether transmission is also altered at other synapses of the LG-escape reflex circuit by traumatic shock-induced sensitization. Evidence that traumatic shock also directly affects the excitability of lateral giants is now provided by the finding that traumatic shock produces a significant reduction of the time needed for LG to recruit its contralateral homologue, which is defined as commissural delay. Octopamine, a naturally occurring neuromodulator in the crayfish nerve cord, has also been shown to enhance transmission at the cholinergic synapse between primary afferents and sensory interneurons, and has been conjectured to mediate sensitization. Like traumatic shock, $octopamine\;(10^{-5}-5{\times}10^{-4}\;M)$ also enhanced the efficacy of commissural transmission between lateral giants, as indicated by a significant reduction of commissural delay. This effect was blocked by an octopamine antagonist phentolamine, suggesting a specific action of octopamine on the octopamine receptor present on LGs. These observations suggest that both traumatic shocks and octopamine may cause a rather broad alteration in the excitability of the crayfish nervous system that contributes to the sensitization of the LG escape response.

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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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    • v.9 no.7
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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.

Clinical Study on the Case of Paraplegic Patient Caused by Spinal Cord Injury (척수손상으로 인한 하지마비 환자 1례에 대한 임상증례)

  • Lee, Ji-Eun;Chun, Hea-Sun;Cho, Myung-Rae;Ryu, Chung-Ryeol
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.23 no.4
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    • pp.898-902
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    • 2009
  • The aim of this study is to report the improvement after the Oriental medical treatment about a paraplegic patient caused by spinal cord injury. The paraplegia caused by spinal cord injury was the result of falling down. So we diagnosed it as Eohyeol(瘀血), Wei symptom(痿證), Urinary retention(癃閉) in Oriental medical system and applied herbal medicine, acupuncture, moxibustion, physical exercise to the patient for 42days. We evaluate the clinical effect of the treatment with VAS and motor/sensory function score of the body and lower extremities. After the Oriental medical treatment, we achieved the effective result on impairment in motor and sensory function of the paraplegic patient. And also we got the improvement of urinary disorder and pain. The more clinical study about paraplegic patient caused by spinal cord injury may be needed.