. On Innervation of Antagonistic Muscles. Ninth Spinal Induction . imbs are taken and kept fully extended at hip, knee, and ankle ; then usually,in a short time, a strong flexion-reflex at hip and knee supervenes. Again,if similarly one hind limb be strongly passively flexed at hip but stronglyextended at knee and kept in that posture for a short time, it is usual for anyattempt to passively extend the hip to elicit at once strong reflex contractionof the flexors of the hip, preventing passive extension. Nevertheless, the greater inductive effect of flexion upon extension tha
. On Innervation of Antagonistic Muscles. Ninth Spinal Induction . imbs are taken and kept fully extended at hip, knee, and ankle ; then usually,in a short time, a strong flexion-reflex at hip and knee supervenes. Again,if similarly one hind limb be strongly passively flexed at hip but stronglyextended at knee and kept in that posture for a short time, it is usual for anyattempt to passively extend the hip to elicit at once strong reflex contractionof the flexors of the hip, preventing passive extension. Nevertheless, the greater inductive effect of flexion upon extension thanof extension upon flexion as examined at the knee-joint, seems, in myexperience, marked. In regard to it one remembers that though electricalstimulation of the afferent nerve-fibres from the flexor muscles has beenshown to inhibit the reflex contraction of the extensor,$ it has not been * * Journ. of Physiol., vol. 34, p. 34, fig. 21, phase 3.+ Sherrington, Brit. Assoc. Reports, ibid,J Roy. Soc. Proc., vol. 52, p. 556. VOL. LXXVII.—B. 2 N 488 Prof. C. S. Sherrington. [Jan. 31,. ^ ^ Ot O 0 73 OS CD ;-( O CC<D• i-(!h<DOQ 1—t OS O •1—I +3 rec3 r-! 1—IO G • l—I o o CC o <X) O o • 1—ICCCC o O rs CC o 02+3 CC o•i—t o CC +3 • l—I X ^ «i o J3o o o o d•i—I •1—1 • H Q >^ ; s a; CC CC ^ c3 02 -d +3 oo 02 • 1—I o 03 ^ ^ 4^ pq CO 1—t cS t> 0 (X) •+=> +3 t o -?JOS o > CC X<D <D!h U oo 4o CC O «4H o CC o n3o C3 bJOrd •1—I o +3 B -p «+-(o u I o o ft CC <4H o CC as +3 P3 •1—I CC o O o CC X CCI 0) 2o o CC• r-( CC s=i^:^ <X) (-1 o I—I550 CC .w u R ^ CJ • i~( a o • O •- <s5 c3 d•:3 ^ C3 ^ r^ o CC n:5d CC^ K ad a>u d o•1—I CC d !^o o CCCC o do d rd d O P- ? 1—1 dd d doo CC (X) »4-<
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