Inhibition of the soleus H-reflex during dorsiflexion is dependent on individual differences in maximal soleus H-reflex as a test reflex.
The quantitative differences among individuals in the natural reciprocal inhibition of the soleus H-reflex during dorsiflexion were examined, in conjunction with the maximal H-reflex as the test reflex size in each individual. Maximal H-reflex was expressed relative to the maximal M-response (H(max)) when compared among individuals. Analysis showed that with increases in H(max) at rest in each individual, the inhibitory effect was first enhanced, then reached a peak, and was finally alleviated. This pattern was similar to the intraindividual pattern of the inhibitory effect induced by specific conditioning stimulus as a function of the test reflex size.
Funase
K
K
School of Allied Medical Sciences, Nagasaki University, Japan. funase@net.nagasakiu.ac.jp
Imanaka
K
K
Nishihira
Y
Y
D000293:Adolescent; D000328:Adult; D000344:Afferent Pathways / Q000502:physiology; D001288:Attention / Q000502:physiology; D001364:Awareness / Q000502:physiology; D005260:Female; D006181:H-Reflex / Q000502:physiology*; D006801:Humans; D007206:Individuality; D008297:Male; D009046:Motor Neurons / Q000502:physiology; D009433:Neural Inhibition / Q000502:physiology*; D011434:Proprioception / Q000502:physiology; D012016:Reference Values; D012815:Signal Processing, Computer-Assisted; D013116:Spinal Cord / Q000502:physiology; D013979:Tibial Nerve / Q000502:physiology