The Japanese Journal of Rehabilitation Medicine
Online ISSN : 1880-778X
Print ISSN : 0034-351X
ISSN-L : 0034-351X
Volume 35, Issue 11
Displaying 1-6 of 6 articles from this issue
  • Junya SHINDO, Yasutomo OKAJIMA, Akio TSUBAHARA, Kunitsugu KONDO, Naoic ...
    1998 Volume 35 Issue 11 Pages 731-737
    Published: November 18, 1998
    Released on J-STAGE: October 28, 2009
    JOURNAL FREE ACCESS
    We investigated the changes of muscle fiber conduction velocities (MFCV) and myopathology in denervated extensor digitorum longus (EDL) and soleus (SOL) muscles following sciatic nerve section in 29 adult Wistar rats. Although muscle fiber diameter of SOL was larger than that of EDL, MFCV of the SOL was slower than the EDL. SOL was composed mainly of type 1, and EDL manly of type 2 fibers. After denervations, muscle weight, fiber diameter, and MFCV decreased. The decrement of MFCV was abrupt after denervations as compared with gradual decrease of the weight and diameter. Results indicated that denervation itself, probably changing the sarcolemmal excitability, may play a role in the early delay of the MFCV.
    Download PDF (823K)
  • Shin-ichi IZUMI, Moriichiro TAKASE, Naoichi CHINO, Motohide ARITA, Aki ...
    1998 Volume 35 Issue 11 Pages 738-743
    Published: November 18, 1998
    Released on J-STAGE: October 28, 2009
    JOURNAL FREE ACCESS
    We evaluated changes in the scalp-recorded electroencephalogram (EEG) and evoked responses induced by transcranial magnetic stimulation (TMS) in four stroke patients. The center of a circular coil was positioned at the vertex. Forty clockwise stimulations were administered every 3-5 sec with the maximum output of electric current. A circuit that blocked the input for 150 msec after stimulation was used to reduce stimulus artifact. EEGs were recorded from F3/4, C3/4, P3/4, and T3/4. Slowing of the EEG was observed immediately (150 msec) after each stimulation. The incidence of changes ranged from 10 to 80% and the duration of the change ranged from 250 to 600 msec. A densely hemiplegic patient with a large subcortical lesion who was taking anticonvulsant medication had an abnormal baseline EEG and showed a lower incidence of EEG changes compared to patients with mild to moderate hemiplegia or pontine lesions. In a patient with mild hemiplegia due to a lacunar infarction, averaged TMS-evoked electroencephalographic responses appeared as gentle positive waves, fused with 1 to 3 negative peaks. The methods used in this study may be useful in evaluating the sensitivity of stroke patients to TMS.
    Download PDF (703K)
  • Fujiko HOTTA, Shigeru SONODA, Tetsuya TSUJI, Naoichi CHINO
    1998 Volume 35 Issue 11 Pages 744-747
    Published: November 18, 1998
    Released on J-STAGE: October 28, 2009
    JOURNAL FREE ACCESS
    The validity of the motor and sensory items of the Stroke Impairment Assessment Set (SIAS) was examined. Subjects were 175 stroke patients with hemiplegia. To validate Knee-mouth test and Knee-extension test, the times of 10 repetitions of elbow flexion and extension in both affected and unaffected sides were measured in patients with a score of more than 3 on the Knee-mouth test in SIAS. The measurement of the times for 10 repetitions of knee flexion and extension was in the same manner. Then we caluculated unaffected-affected time ratio, respectively. To validate the sensory items of the SIAS, the unaffected knee angle that patients demonstrated for simulation of an affected knee angle passively positioned at 45 and 90 deg. were measured. The absolute value of the angle of difference between affected and unaffected side was calculated. Knee-mouth test was correlated to the unaffected/affected time ratio for 10 repetitions by the elbow (r=0.836). Knee-extension test was also correlated (r=0.817). On sensory test, the higher the score of the position test in SIAS, the smaller the error of the knee angle. In conclusion, these results provided increased evidence of the validity of the motor and sensory items of the SIAS.
    Download PDF (473K)
  • Their Relation to Latency, Amplitude, and Habituation
    Minoru TOYOKURA
    1998 Volume 35 Issue 11 Pages 748-751
    Published: November 18, 1998
    Released on J-STAGE: October 28, 2009
    JOURNAL FREE ACCESS
    The aim of this study was to investigate the relation of sympathetic skin response (SSR) waveform variation to latency, amplitude, and habituation. Twenty SSRs were recorded from the sole skins of 41 normal subjects by electrical stimulations (0.2ms duration and 20mA in intensity) which were given to the median nerve at the wrist. Waveforms were classified as one of two types, namely, the P type, in which the positive component was larger than the negative, and the N type, in which the negative component was larger than the positive. During successive stimulations, 6 of the 41 subjects had only P type waveforms (P pattern), 14 others only the N type (N pattern), and the remaining 21 both the P and N types (M pattern). Latency, amplitude, and habituation were modified by the appearance patterns of the SSR waveforms. The P pattern had a larger amplitude and shorter latency than the N pattern. Habituationwith time was more pronounced for the M pattern. This was compatible with previously reported results for SSR from the palm skins.
    Download PDF (489K)
  • 1998 Volume 35 Issue 11 Pages 752-813
    Published: November 18, 1998
    Released on J-STAGE: October 28, 2009
    JOURNAL FREE ACCESS
    Download PDF (10159K)
  • 1998 Volume 35 Issue 11 Pages 814-892
    Published: November 18, 1998
    Released on J-STAGE: October 28, 2009
    JOURNAL FREE ACCESS
    Download PDF (12857K)
feedback
Top