This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ... LECTURE II CO-ORDINATION IN THE SIMPLE REFLEX (continued) Argument: Reflex-arcs show high capacity for summing excitations. Irreversibility of direction of conduction in reflex-arcs. Reversibility of direction of conduction in certain nerve-nets, e. g. that of Medusa. Independence between the rhythm ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ... LECTURE II CO-ORDINATION IN THE SIMPLE REFLEX (continued) Argument: Reflex-arcs show high capacity for summing excitations. Irreversibility of direction of conduction in reflex-arcs. Reversibility of direction of conduction in certain nerve-nets, e. g. that of Medusa. Independence between the rhythm of the reflex-discharge and the rhythm of the external stimulus exciting it. Refractory phase in reflexes; in the eyelid-reflex; in the scratch-reflex. The neuronic construction of the reflex-arc of the scratch-reflex. Long descending proprio-spina! tracts revealed by the method of "successive degeneration." The "final common path" and the "afferent arc." Intraspinal seat of the refractory phase of the scratch-reflex. The value of refractory phase in the co-ordination of the swimming of Medusa. Its value in the co-ordination of the scratch-reflex. Significance of the intraspinal situation of the refractory phase of the scratchreflex. Other instances of " central" refractory phase. i Summation. Summation of subliminal stimuli so that by repetition they become effective is practically unknown in nervetrunk conduction. But it is a marked feature of reflex-arc conduction (Setschenow,31 Stirling67). Nor is it attributable to the muscles whose contraction may serve as index of the reflexresponse, since summation of this extent is not known for vertebrate skeletal muscle, though found by Richet98 in the claw-muscle of the crayfish. We find striking instances of the summation of subliminal stimuli given by the scratch-reflex. The difficulty in exciting a reflex by a single-induction shock is well known. A scratch-reflex cannot in my experience be elicited by a singleinduction shock, or even by two shocks, unless as physiological stimuli they are very...
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New. Sewn binding. Cloth over boards. 420 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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Very Good in Good jacket. 8vo. Jacket has mild to moderate wear including some light chips and rubs, loss to head and foot of spine and darkening to spine. Ink inscrip to flyleaf, price clipped, PP as new, very clean and tidy.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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Minor rubbing. Bookplate to fixed flyleaf. VG. 22x14cm, xxiv, 433 pp., Name and rubberstamp to front free flyleaf. Danish physiological chemist Tage Astrup's copy, with his name & rubberstamp to flyleaf.
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Good. Good condition. No Dust Jacket (Nervous System, Medicine) A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains.
