The Journal of Comparative Neurology and Psychology, Volume 20Editorial Office, Denison University, 1910 |
From inside the book
Results 1-5 of 89
Page 8
... increased . This naturally reduced the percent- age value of the sum of the lengths of the leg bones , the measure- ments of which were made in the same way in both cases . The above mentioned change in technique is the only one which ...
... increased . This naturally reduced the percent- age value of the sum of the lengths of the leg bones , the measure- ments of which were made in the same way in both cases . The above mentioned change in technique is the only one which ...
Page 13
... increase in the relative weight of the central nervous system is measured by the increase in C , and vice versa , we obtain the following : R. pipiens 1904 TABLE 11 To show the values of " C " for each of the several series AVERAGE ...
... increase in the relative weight of the central nervous system is measured by the increase in C , and vice versa , we obtain the following : R. pipiens 1904 TABLE 11 To show the values of " C " for each of the several series AVERAGE ...
Page 14
... increase in the value of C as the absolute size of the frog increases . This is a relation pre- viously overlooked , but which will be discussed elsewhere . The bearing of it on the present case is that in making a comparison of the ...
... increase in the value of C as the absolute size of the frog increases . This is a relation pre- viously overlooked , but which will be discussed elsewhere . The bearing of it on the present case is that in making a comparison of the ...
Page 15
... increase in the weight of the central nervous system proportional to the differences in the values of C after correction for the differences in body weights in the several series . Why the particular series of pipiens used by me as a ...
... increase in the weight of the central nervous system proportional to the differences in the values of C after correction for the differences in body weights in the several series . Why the particular series of pipiens used by me as a ...
Page 19
... increase of the fibers in diameter . Four years later ( 1908 ) Takahashi published a paper on the same subject under the title " Some conditions which determine the length of the internodes found on the nerve fibers of the leopard frog ...
... increase of the fibers in diameter . Four years later ( 1908 ) Takahashi published a paper on the same subject under the title " Some conditions which determine the length of the internodes found on the nerve fibers of the leopard frog ...
Contents
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Common terms and phrases
adult Ameiurus Amia Amphibia Anat animal anlagen aorta appear arise artery auditory vesicle brain Cajal caudad cells migrating cent cerebral cervical commissure COMPARATIVE NEUROLOGY connection cortex cutaneous diameter diencephalon differentiated distal dorsal dorso-lateral embryo epibranchial placode epidermis evaginated figures foramen forebrain frog ganglion cells Gasserian give rise Golgi hemisphere hippocampi internodes IXth lateral line lateral line organs lateral mass lateralis VIIth length mammals median medullated membrane mesectoderm migrate peripherally mouse nasal capsule nerve cells nervus terminalis neural crest neural tube NEUROLOGY AND PSYCHOLOGY neurones nucleus observed olfactory bulbs olfactory nerve origin pars percentage of water placode portion postauditory placode preauditory placode prevertebral plexuses primordium hippocampi region relation roots sensory spinal cord spinal ganglia spinal nerves stage structure sulcus sympathetic nervous system sympathetic plexuses sympathetic system sympathetic trunks telencephalon thalami tion traced tract Transverse section vagi vertebrates visceral walls Wistar Institute
Popular passages
Page 138 - ... if the states of consciousness which a creature endeavours to maintain are the correlatives of injurious actions, and if the states of consciousness which it endeavours to expel are the correlatives of beneficial actions, it must quickly disappear through persistence in the injurious and avoidance of the beneficial.
Page 552 - However, the results of tests which entirely disprove this view of the phenomenon are given in the following table. The first column gives the number of the experiment, the second...
Page 193 - CR 1906 The development of the thyroid gland in Bdellostoma Stouti. Anat. Anz., Bd. 29. WHEELER 1899 The development of the urogenital organs of the lamprey. Zool. Jahrb., Bd. 13. WILLY, A. 1894 Amphioxus and the ancestry of the vertebrates. New York. PLATE 1 EXPLANATION OF FIGURES All figures were drawn with the aid of the camera lucida. Higgin's carmine and true blue inks were used to reproduce the colors of the stained sections represented in the colored plate. 1 Lymphoid accumulation in the lateral...
Page 142 - Or, on the other hand, we suppose the spontaneous movements to give pain, and assume that, with the pain, there will be a decrease of energy, extending to the movements that cause the evil, and thereby providing a remedy. A few repetitions of the fortuitous concurrence of pleasure and a certain movement, will lead to the forging of an acquired connection, under the law of retentiveness or contiguity, so that, at an after time, the pleasure or its idea shall evoke the proper movement at once.
Page 140 - If we substitute for the word Pleasure the equivalent phrase — a feeling which we seek to bring into consciousness and retain there...
Page 142 - That is to say, the lines of nervous communication through which the diffused discharge happened in this case to pass, have opened a new way to certain wide channels of escape; and, consequently, they have suddenly become lines through which a largo quantity of molecular motion is drawn, and lines which are so rendered more permeable than before.
Page 142 - Pleasure and pain can be agents of accommodation and development only if the one, pleasure, carry with it the phenomenon of "motor excess," and the other, pain, the reverse — probably some form of inhibition or of antagonistic contraction.
Page 539 - Subscriptions and all business correspondence should be addressed to THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY 36TH STREET AND WOODLAND AVENUE PHILADELPHIA, PA.
Page 138 - ... the average, agreeable or desired feelings went along with activities conducive to the maintenance of life, while disagreeable and habitually-avoided feelings went along with activities directly or indirectly destructive of life ; and there must ever have been, other things equal, the most numerous and long-continued survivals among races in which these adjustments of feelings to actions were the best, tending ever to bring about perfect adjustment.
Page 142 - ... quantity of molecular motion is drawn, and lines which are so rendered more permeable than before. On recurrence of the circumstances, these muscular movements that were followed by success are likely to be repeated : what was at first an accidental combination of motions will now be a combination having considerable probability.