. On Cerebral Anaemia and the Effects Which Follow Ligation of the Cerebral Arteries . u Q Q ^Q if o O o 3 P3 -+-3 © «4-l O cS © to 3 0 to feD ^ 4-3 O rP 4-3 Pi o © COO a ?-( O © *4-f i— T5 © r2 ^ J*? ©J* Po •r-f cS4-3 - - r—1 4-3 © «4-lO & x o ©Pm © H © CM *-* O 2 a - ^ o r5 4^ .s ! © +3 co «—s •1-1 cs 4-3 <•§ --d ^3 © cS bo 43O© PP O © co £r *r-< 1—4 •r-JP4fH © O CO p© 4» EFFECTS WHICH FOLLOW LIGATION OF THE CEREBRAL ARTERIES, 99 VII. Young and Vigorous Bonnet Monkey. Extensor carpi radialis connected with isometric lever. CWotids prepared;cannula placed in jugular vein ; arm area of c
. On Cerebral Anaemia and the Effects Which Follow Ligation of the Cerebral Arteries . u Q Q ^Q if o O o 3 P3 -+-3 © «4-l O cS © to 3 0 to feD ^ 4-3 O rP 4-3 Pi o © COO a ?-( O © *4-f i— T5 © r2 ^ J*? ©J* Po •r-f cS4-3 - - r—1 4-3 © «4-lO & x o ©Pm © H © CM *-* O 2 a - ^ o r5 4^ .s ! © +3 co «—s •1-1 cs 4-3 <•§ --d ^3 © cS bo 43O© PP O © co £r *r-< 1—4 •r-JP4fH © O CO p© 4» EFFECTS WHICH FOLLOW LIGATION OF THE CEREBRAL ARTERIES, 99 VII. Young and Vigorous Bonnet Monkey. Extensor carpi radialis connected with isometric lever. CWotids prepared;cannula placed in jugular vein ; arm area of cortex exposed. Marked contractionsare obtained on exciting the upper arm area just in front of the fissure of is no difference in excitability after clamping both carotids, although thebrain is exsanguined and collapsed. Excitations, with the carotids clamped or notclamped, are repeated several times. Fig. 6.—Bonnet Monkey. Extensor carpi radialis recorded. Cortex excited in front of Rolandic fissure. CC. With carotids clamped, CO. With carotids loosened. Fig. i. —Same Experiment as Fig. 6. mm i . ! 1 1 1 1 i 1 t ii I i 1 i i i / / i ii 11 CO s / 1 1 1 f 1 1 1 ll 1 L i L L L. L L LLtL1 L L. 1 LL I i I tSO muwMimjm^ ihj ^OjWLanM/z/iiiJij^Vjj u \70\60 CO 1 CC CC ? \50140 \ A ~\ r \ v__n 130 — 1 \ 1 \£0 \\ \\ I/O \) \\ ^0 L ._ CO. Excitation of cortex with carotids loosened. CO. With carotids clamped. o 2 100 ME. L. HILL ON CEREBRAL ANiEMIA AND THE Fig. 8.—Same Experiment as Figs. 6 and 7.
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