• Title/Summary/Keyword: H reflex

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Study of Strain/Counterstrain Technique (좌상/역좌상기법에 대한 고찰)

  • Song, Yun-Kyung;Lim, Hyung-Ho;Park, Sung-Ho
    • The Journal of Korea CHUNA Manual Medicine
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    • v.4 no.1
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    • pp.99-109
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    • 2003
  • Dr. Lawrence H Jones developed innovative approach for the treatment of neuromuscular and musculo-skeletal disorders such as fibromyalgia, myofacial pain syndrome, any other muscle pain. This technique is called Strain/Counterstrain technique which uses effect of neuromuscular reflex for treatment of strain. First, Relieving spinal or other joint pain by passively putting the joint into its position of greatest comfort; secondly relieving pain by reduction and arrest of the continuing inappropriate proprioceptor activity. This was accomplished by markedly shortening the muscle that contains the malfunctioning muscle spindle by applying. mild strain to its antagonists. In other words, the inappropriate strain reflex is inhibited by application of counterstrain. Many other techniques have been developed for treating of muscle pain due to somatic dysfunction, but we want to introduce you to strain/counterstrain technique because this is basic concept and theory of Chum therapy for controling motor system.

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Review of Electrophysiologic Examination (전기생리학적 검사에 대한 고찰)

  • Baek Su-Jeong;Kim Dong-Hyun;Lee Mi-Ae;Kim Jin-Sang
    • The Journal of Korean Physical Therapy
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    • v.16 no.3
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    • pp.72-85
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    • 2004
  • We have few assessment tool in physical therapy. Recently, there is increasingly a concern of electrophysiologic examinations. They includes electomyography; needle and surface, evoked potentials; somatosensory evoked potentials; brainstem auditory evoked potentials; visual evoked potentials, nerve conduction velocity, blink reflex, H-reflex, and F-wave. The purpose of this study is understanding of electrophysiologic examinations. So we hope many physical therapist to use electrophysiologic examinations in research.

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A Comparative Study on the Use of Acepromazine/ketamine Combination and Propofol as Induction Agents for Enflurane Anesthesia in Dogs (개에서 Enflurane에 대한 도입마취제로서 Acepromazine/ketamine 병용 투여와 Propofol 단독 투여에 관한 비교 연구)

  • 김종만;김명철
    • Journal of Veterinary Clinics
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    • v.17 no.2
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    • pp.395-402
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    • 2000
  • 흡입마취에서 마취를 유지하기 위해서는 도입 마취가 필수적이다. 도입 마취제는 작용시간이 짧고 기관 튜브를 용이하게 삽입할 수 있으며. 투여로 인한 생리적 영향이 적이야 한다 Acepromazine/ketamine(Group-AK) 병용 투여와 propofol(Group-P) 단독 투여로 마취 유도한 후 Enflurane으로 마취를 유지하였을 때 나타나는 생리적 변화를 비교하였다 체온, 호흡수, 평균 동맥압, Pa$CO_2$, PaO$_2$, pH, toe-wep pinch reflex 및 jaw tone reflex는 두 군간에서 유의성 있는 차이가 나타나지 않는다. Group-P은 group-AK보다 회복시간이 유의성 있게 짧았다 심박수는 group-AK군이 마취 추 5분에서 group-P보다 유의성 있게 증가하였다. 동성 빈 맥은 group-AK군에서는 5및 10분에 각각 2미터에서 관찰되었고 group-P에서는 5분에 2마리, 10분에 1마리가 관찰되었다. Acepromazine/ketamine propofol은 모두 enflurane 마취를 위한 도입마취제로서 양호한 효과를 나타내었다.

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Development of a Device for Estimating the Optimal Artificial Insemination Time of Individually Stalled Sows Using Direct-reflex Photo-sensors (직접반사형 포토센서를 이용한 스톨 사육 모돈의 인공수정적기 예측 장치 개발)

  • Kim D. J.;Yeon S. C.;Chang H. H.
    • Journal of Biosystems Engineering
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    • v.29 no.6 s.107
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    • pp.515-520
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    • 2004
  • A device far estimating the optimal artificial insemination time consisted of a computer, RS module, and six direct-reflex photo-sensors. Program was written in LabWindows CVI. In order to establish references for estimating optimal artificial insemination time, lying rate of the thirty three $Berkshire{\times}Hampshire crossbred sows (parity 5 to 6) was recorded from 2 days after moving into stalls to artificial insemination using a time lapse VCR and was measured every hour with one minute interval using the scan point sampling method. Twenty low hours in a day were divided into three comparing periods : 21:00 to 06:59, 07:00 to 13:59, and 14:00 to 20:59. If sum of the percentages of tying during a comparing period was less than the reference value, the starting hour of the comparing period was considered as onset of estrus and the optimal artificial insemination time was estimated at 20 to 24 hours after onset of estrus. The experimental device was evaluated with twenty five $Berkshire{\times}Hampshire$ crossbred sows (parity 2 to 7) and 23 of 25 sows $(92\%)$ were pregnant. This result suggests that the experimental device is excellent in performance for estimating optimal artificial insemination time.

Effects on Electrophysiologic Responses to the Transcutaneous Electrical Nerve Stimulation and Ultra Sound (경피신경전기자극과 초음파가 전기생리학적 반응에 미치는 영향)

  • Baek Su-Jeong;Lee Mi-Ae;Kim Jin-Sang;Choi Jin-ho
    • The Journal of Korean Physical Therapy
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    • v.12 no.1
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    • pp.49-56
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    • 2000
  • The purpose of this study was to investigate the influnce of afferent stimuli, transcutaneous electrical nerve stimulation and ultra sound, on the electrdiagnostic study of normal subjects. Electrodiagnostic study was performed before and after the application of afferent stimulation of the right popliteal fossa on 18 healthy female volunteers. After the transcutaneous electrical nerve stimulation, there is no significantly change of latencies and amplitudes of SEP, H-reflex, peroneal nerve F-wave, and sensory nerve conduction. After the ultra sound, there is no significantly change of latencies and amplitudes of SEP, H-reflex, peroneal nerve F-wave, and sensory nerve conduction. Tibial nope F-wave and motor nerve shows prolonged latency after TENS and US (p<0.01). Ultrasound may have a similar mechanism of action compared to transcutaneous electrical nerve stimulation by having localized inhibitory effects of the peripheral nerve. However, further investigation is needed to assess their mechanism of action and the precise relevance of stimulation modality.

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The effect of Hominis Placenta Pharmacopuncture on Leg spasticity of stroke patients (A Pilot study, Double blind, Randomized, Controlled Clinical Trial) (중풍 환자의 하지 경직에 대한 자하거 약침의 효과 연구)

  • Noh, Ju-Hwan;Park, Jung-Ah;Youn, Hyoun-Min;Jang, Kyung-Jeon;Song, Choon-Ho;Ahn, Chang-Beohm;Kim, Cheol-Hong
    • Journal of Pharmacopuncture
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    • v.12 no.4
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    • pp.97-110
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    • 2009
  • Objective : The purpose of this study is to determine the effect of Hominis Placenta Pharmacopuncture(HPP) on lower limb spasticity control in stroke patients. Methods : Twenty stroke patients with Leg spasticity were randomly divided into two groups, a Distilled water Pharmacopuncture(group I) and a HPP(group II). The number of Pharmacopuncture was 5 times a week and acupuncture treatment was 3 times a week for 3 weeks. Modified Ashworth Scale(MAS), H-reflex/M-response ratio(H/M ratio), Berg Balance Scale(BBS) and Time Up & Go(TUG) were used for evaluation of spasticity control before experiment, after 1 week, 2 weeks, 3 weeks. Results : Group I showed significant improvement(p$<$.05) in BBS but no significant improvement in MAS, H/M ratio, and TUG. Group II showed significant improvement(p$<$.05) in MAS, BBS, and TUG, but no significant improvement in H/M ratio. The results showed significant difference in TUG, but no significant difference in MAS, H/M ratio and BBS between 2 groups. Conclusion : These results showed that HPP might decrease lower limb spasticity and increase leg motor function in stroke patients. Further studies will be required to examine more cases in the long period for the effect on lower limb in spasticity by HPP.

Effects of Gastrocnemius Stretching on α-Motor Neuron Excitability and Ankle Joint Active Dorsiflexion Range of Motion (비복근 스트레칭이 α-운동 신경원 흥분도와 족관절 능동 배측굴곡 가동범위에 미치는 영향)

  • Kim, Jong-Soon
    • The Journal of the Korea Contents Association
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    • v.9 no.9
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    • pp.278-286
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    • 2009
  • The aims of this study were to determined whether excitability of the $\alpha$-motor neuron is modulated by stretching and this changes were associated with flexibility of the muscle. In this study, $\alpha$-motor neuron excitability was measured by using the Hmax/Mmax ratio of the gastrocnemius H-reflex, and muscle flexibility was measured with the range of motion of the ankle dorsiflexion. The gastrocnemii of 10 healthy volunteers were stretched for 4 minutes(2 minutes stretching, 1 minute rest, and 2 minutes stretching) in each session by manual force. The Hmax/Mmax ratio of the H-reflex, as well as the range of motion of the ankle dosiflexion was measured through four different conditions: before stretching, as soon as after $1^{st}$ stretching, as soon as after $2^{nd}$ stretching and at 48 hours after $2^{nd}$ stretching. Excitability of the $\alpha$-motor neuron was decreased significantly after $1^{st}$ and $2^{nd}$ stretching(p<0.05). Furthermore, the range of the dorsiflexion was increased significantly after $1^{st}$ and $2^{nd}$ stretching(p<0.05). However, the excitability of the $\alpha$-motor neuron and range of the dorsiflexion at 48 hours after $2^{nd}$ stretching were not different from those of before stretching. These results suggest that reduced $\alpha$-motor neuron excitability of the gastrocnemius and increased flexibility of the ankle dorsiflexion would be followed by activation of the type III mechanoreceptor which around the ankle joint and the Golgi tendon organ in the gastrocnemius.

Sympathetic Nerve Function to Electrical Response of Ryodoraku Point and Disarrangement of its Meridian Location on the Anatomical Viscera Exclude the Association between Ryodoraku Theory and Meridian Principle (양도점의 전기적 반응에 대한 교감신경작용과 경락 배열과 실질장기의 불일치는 양도락의 경락 관련성을 배제한다.(위 운동장애형 기능성 소화불량증 환자의 양도점 H4,5,6의 반응을 중심으로))

  • Yoon, Sang-Hyub
    • The Journal of Internal Korean Medicine
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    • v.32 no.2
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    • pp.259-277
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    • 2011
  • Objectives : The purpose of this study was to investigate two subjects: the diagnostic value of bilateral lowering of electrical activity at point H4,5,6 of Ryodoraku and the mechanism for Ryodoraku phenomena. Methods : Electrical activities of Ryodoraku test and electrogastrography recorded simultaneously and monitored continuously from 16 cases of functional dyspeptic patients were collected and their variations were grouped by the topics of discussion which were peculiarity, stability, lagging, alterability, and anomaly. Ryodoraku recordings obtained from 6 patients with different gastrointestinal diseases and 1 normal healthy person were used as control. The results are discussed with Nakatani's suggestion, theory of sympathetic nerve and Meridian Principle, respectively. Finely, coincidence of stomach arrangement between anatomy and meridian system in Ryodoraku was also evaluated. Results : Time-course variation showed a regular relationship between the typical pattern of Ryodoraku at point H4,5,6 and gastric myoelectrical activity. However, an irregular relationship and atypical pattern of Ryodoraku occasionally appeared. A literature search suggested that electrical response at the Ryodoraku point H4,5,6 may be dependent on an afferent sympathetic spinal reflex transmitted from the stomach. However, there was no evidence for making clear whether bilateral lowering of electrical activity at this point was induced by hypofunction of local sympathetic nerve in the skin itself or of signals transmitted from the gastric sympathetic nerve or not. The coincidence of 19% could not provide a visceral arrangement of the stomach between anatomy and meridian systems. Conclusions : Bilateral lowering of electrical activity at Ryodoraku point H4,5,6 has value as a diagnostic index for gastric dysmotility of functional dyspepsia. This phenomenon is associated with spinal reflex transmitted from the afferent sympathetic nerve in the stomach but not that of meridian function.

A Study for the Norms of Audiometric Tests in Koreans (정상한국인의 청력검사치에 관한 연구)

  • 오혜경;서장수;이근해;김희남;김영명;권영화;서옥기
    • Proceedings of the KOR-BRONCHOESO Conference
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    • 1981.05a
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    • pp.38.1-38
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    • 1981
  • Currently in the otologic field, there are various methods of special audiometric examinations, such as, tone decay, SISI, and impedance audiometry and only a few studies has been done in these fields sporadically in Korea. The purpose of this paper is to establish norms of various special audiometric tests, so we have performed the special audiometric tests on 100 male medical students in good physical condition and the follow results were obtained. 1. All cases showed over 90% of PB scores. The mean and its 2 S.D. were 98$\pm$4.9% in the right ear and 97$\pm$5.6% in the left ear. 2. The mean and its 2 S.D. of MCL(most comfortable level) were 45$\pm$15.4 dB in the right ear and 46$\pm$17.9 dB in the left ear, and its range was 12$\pm$12.2 dB in the right ear and 13$\pm$12.6 dB in the left ear. 3. The mean and its 2 S.D. of UCL (uncomfortable level) were 102$\pm$7.9 dB in the right ear and 102$\pm$7.9 dB in the left ear and about an half in cases showed over 106 dB of UCL. 4. In 95% of cases, SISIs(short increment sensitivity index) at 1, 000 Hz and 4000 Hz was below 45% in the right ear in both frequencies and below 55% and 75% in the left ear, respectively. 5. In 95% of cases, tone decays at 2, 000 Hz and 4, 000 Hz was below 10 dB in both ears. 6. The difference between SRT and PTA (speech reception threshold minus pure tone average) was 4$\pm$9.2 dB in the right ear and 4$\pm$10.0 dB in the left ear. 7. The dynamic range(uncomfortable level minus speech reception threshold) was 98$\pm$13.5 dB in the right ear and 99$\pm$13.5 dB in the left ear. We had trouble in estimating the dynamic range in about an half in cases, in which we couldn't estimate the UCL with our conventional audiometry. 8. The results of impedance audiometric tests were as follow: A. In the tympanogram, all cases were of A type with one exception of B type in the left ear. The mean and its 2 S.D. of its peak level were 22.8$\pm$32.94mm $H_2O$ in the right ear and 23.9$\pm$29. 81mm $H_2O$ in the left ear. B. The mean and its 2 S.D. of the compliance were 0.6$\pm$0.54cc in the right ear and 0.6$\pm$0.53cc in the left ear. C. The results of stapedial reflex: a. The mean and its 2 S.D. of the controlateral stapedial reflex at 500Hz, 1, 000Hz, 2, 000Hz, 4, 000Hz were 99$\pm$17.7 dB, 87$\pm$14.4 dB, 79$\pm$13.7 dB, 77$\pm$20.0 dB in the right ear and 99$\pm$15.9 dB, 88$\pm$13.9 dB, 79$\pm$13.7 dB, 77$\pm$21.3 dB in the left ear. Depending on the tested frequencies, the stapedial reflex wasn't generated in 6 cases in the right ear and 11 cases in the left ear. b. The mean and its 2 S.D. of the ipsilateral stapedial reflex at 1, 000Hz, and 2, 000Hz were 89$\pm$16.3 dB, 82$\pm$15.9 dB in the right ear and 89$\pm$18.0 dB, 83$\pm$18.9 dB in the left ear. Depending on the tested frequencies, the stapedial reflex wans't generated in 1 case in the right ear and 2 cases in the left ear. 9. Eustachian tube function using with impedance audiometry was malfunctioned in21 cases depending on the tested pressure and the range of peak level of tympanogram was 14$\pm$26.9mm $H_2O$(tested pressure:+250mm $H_2O$), 8$\pm$21.9mm $H_2O$ (tested pressure:-250mm $H_2O$) in the right ear and 11 cases depending on the tested pressure and the range of the peak level of tympanogram was 12$\pm$22.5mm $H_2O$ (tested pressure: +250 mm $H_2O$, 9$\pm$17.3mm $H_2O$(tested pressure: -250mm $H_2O$) in the left ear.

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The Effect of Central Neural Adaptation by Neuromuscular Electrical Stimulation (신경근전기자극에 의한 중추신경원의 순응효과)

  • Lee, Jeong-Woo;Seo, Sam-Ki;Yoon, Se-Won;Kim, Yong-Eok;Kim, Tae-Youl
    • Journal of the Korean Academy of Clinical Electrophysiology
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    • v.5 no.1
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    • pp.59-71
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    • 2007
  • The purpose of this study was to study for the change of neural adaptation by muscle contraction force when neuromuscular electrical stimulation(NMES) was applied. Sixteen subjects(8 male, 8 female) without neuromuscular disease volunteered to participate in the study. All subjects were divided into two subgroups: control(no electrical stimulation) group, NMES(50% maximal voluntary isometric contraction) group. NMES training program was performed in the calf muscle over three times a week for 12 weeks. Before and after experiment MVIC of ankle plantar flexor was measured by use of dynamometer. H-reflex and V-wave in tibial nerve were measured. The following results were obtained; MVIC and V/Mmax ratio were significantly increased in the electrical stimulation groups. However, H/Mmax ratio was not changed. It was closely relationship between MVIC and V/Mmax ratio. In this study, the effect of neural adaptation of central neural adaptation was found in this study. Accordingly, NMES means not only a change of muscle fiber and skeletal muscle volume but also a effect of neural adaptation of central neural drive. Also, it was found that there was closely relationship between MVIC and neural adaptation of central neural drive by NMES.

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