39 patients with risk factors of cerebrovascular di seases showed the lengthening of N 1, P 2 latencies, but there was no significant difference (P>0.05),N 2, P 3 latencies lengthened remarkable,and their P 3 amplitude decreased 31.3% (P<0.05).
In the pachynsis juveniles when slight contraction,the time limit of MUP was shortened by(5.52± 0.33) ms,the wave amplitude decreased by (0.48± 0.23) mV,the wave amplitude when strong contraction obviously decreased by (0.92 ± 0.2) mV,and the values were also interfered at a pathological phase,significantly different from those in the controls(P< 0.05).
Results:BR was normal in acute stages in 11 of the patients. The latency of R1,R2 and R2′ prolonged and the amplitude decreased in 6 of the patients. The waveform of R1,R2 and R2′disappeared in the another one .
Results In the patients with LA,N 1, P 2, N 2 and P 3 of 37 asymptomatic old persons lengthened and their P 3 amplitude decreased 6.3% as compared with the controls; but there was no significant difference (P>0.05).
Results:VEP was determined in 74 eyes of 68 patients,simple decrease of amplitude was found in 53 eyes of 50 cases(71%),decrease of amplitude accompanied by the prolongation of latency in 18 eyes of 16 cases (25%).
Result:Compared with the normal controls, 37 normal aged patients delayed N 1, P 2, N 2 and P 3 latencies elicited by frequent stimuli, and their P 3 amplitude was decreased by 6.3% ; but their had no significant difference( P >0.05).
Methods: With Medicid-03E brain evoked potential instnnnent of Neuronic Compeany, the latency and the amplitude of P3 evoked by vistal (image) and auditory stimuli were recorded in 168 patient with closed head injury and compared with nounal subjects, 54 cases of the patients were re-examined Results: The P3 latercy in patient group was significantly prolonged as compared with the control group (P＜0.001), but the amplitude was decreased.
Result The BAEP abnormal rate was 63.33%,which had a direct proportion to the course of the disease,and had no cnnection with the density of blood sugar,by analysing,it can be found thatⅢ,Ⅴ PL,Ⅰ～Ⅲ,Ⅲ～Ⅴ IPL were longer than normal group and Ⅲ,Ⅴ wave amplitude was decreased,those differences all were significant(P< 0.05).
The latency of N 1,N 2 and P 3 was significantly prolonged(P<0.01～0.05),the amplitude was reduced(P<0.01～0.05),the distribution of endogenous elements in parietal region were disnormal in all patients,and high power phenomena disappeared.
Between normal group and Group B, F-ERG test revealed no significant difference (P>0.05); OPs test showed that amplitude of OP1 and OP2 were obviously reduced (P<0.05) and the latency of all the OPs was prolonged (P<0.05), whileP-VEP test indicated that the latency of P100 was prolonged and its amplitude was reduced (P<0.05).
The metals tested modify the intestinal movements: aluminum, chromium, and yttrium cause a decrease of amplitude, while iron showed no effect.
At same terms there was an essential decrease of amplitude of the heart rate high-frequency fluctuations synchronous with respiration and of the periodogram slow waves with the period about 1 min.
In rats with fibrotic alveolitis, the repeated stimulation caused a decrease of amplitude and rate of contractions and an increase of the response LP.
The inhibitory Gly effect decreased significantly the DR and RF EPSP (a decrease of amplitude and duration) as a result of the spinal cord treatment with strychnine (5-10 μM), but not with bicuculline.
The following observations were made:a)Current clamp conditions: Slow depolarization (10-15 mV), decrease of amplitude and maximum rate of rise of action potential, finally inexcitability.
After the therapy, the amplitude was decreased and latency was increased in both the groups.
We measured the intracellular voltage response to a small (9%), brief (30 ms) decrease in light intensity from a background, and found that its amplitude was decreased by 1ΜM TTX.
With intensities depolarizing the cell membrane to -45 to -33 mV the average response amplitude was decreased by TTX from 1.2mV to 0.5mV.
Its peak amplitude was decreased and the time course was shortened when the LDS interneuron was depolarized by current injection.
Furthermore, spike amplitude was decreased when external Na+ was reduced, suggesting that there is also a Na+ dependency.5.Repolarization was achieved by a TEA- and 4-AP-sensitive, K+ efflux, part of which passed through Ca+-activated channels.