The Journal of Comparative Neurology and Psychology, Volume 15Editorial Office, Denison University, 1905 |
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Page 23
... indicate this had happened . None of the conclusions drawn in this paper would be materially affected by an acknowledged error of one - fifth of 1 % . The number of cells counted in each section was recorded sepa- rately and not till ...
... indicate this had happened . None of the conclusions drawn in this paper would be materially affected by an acknowledged error of one - fifth of 1 % . The number of cells counted in each section was recorded sepa- rately and not till ...
Page 24
... indicated above , the Vth , VIth and IXth spinal nerves were investigated from 7 frogs varying in body weight from 7 to 63.4 grams . The number of ganglion cells in the spinal ganglia of each nerve was determined and the number of nerve ...
... indicated above , the Vth , VIth and IXth spinal nerves were investigated from 7 frogs varying in body weight from 7 to 63.4 grams . The number of ganglion cells in the spinal ganglia of each nerve was determined and the number of nerve ...
Page 28
... indicates that whatever other changes may take place , a more or less fixed numerical relation is maintained between ... indicate this to be true for the white rat also , and to some extent the figures available show it true for the frog ...
... indicates that whatever other changes may take place , a more or less fixed numerical relation is maintained between ... indicate this to be true for the white rat also , and to some extent the figures available show it true for the frog ...
Page 31
... indicate that they are sufficiently abundant in the ganglia to account for more than a very small proportion of the excesses of cells found there . A larger pro- portion of these extra cells belong probably to the anaxonic type of ...
... indicate that they are sufficiently abundant in the ganglia to account for more than a very small proportion of the excesses of cells found there . A larger pro- portion of these extra cells belong probably to the anaxonic type of ...
Page 35
... indicating further some of the number relations . involving it The table is compiled from the numbers in Tables I and II and represents some relations not brought out in the previous work . Attention is called to the following relations ...
... indicating further some of the number relations . involving it The table is compiled from the numbers in Tables I and II and represents some relations not brought out in the previous work . Attention is called to the following relations ...
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Common terms and phrases
Anat animal arch auditory average body weight brain brain-weight branchial buds caudal centers cerebellum commissure components connection cutaneous decussation direction distal excess dorsal branches dorsal root dorsal root fibers ectoderm facial lobe fact fishes frog function ganglia ganglion cells gill grams gustatory nucleus gustatory system head innervated insect Jour lateral light lobus medulla medullated ments mesoderm method motor movements muscles myotomes nerve fibers nerve roots nervous system neural neural plate Neurology neuromast neuromere neurones normal nucleus number of fibers oblongata observed olfactory optic optic vesicles peripheral Petromyzon phototaxis Physiol placodes portion position posterior Psychology rami ramus Ranatra rats reaction reflex region relations secondary gustatory tract segment selachians sense organs sensory sheath somatic somite specimens spinal cord spinal ganglion spinal nerves stimulus structure sympathetic tactual teleosts three nerves tion trial University vagal lobe vagus ventral root vertebrates vesicle visceral
Popular passages
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Page 100 - As the worm crawls it frequently moves the head from side to side as if feeling its own way along. If a strong light is held in front of the worm it at first responds by a vigorous contraction of the anterior part of the body; it then swings the head from side to side, or draws it back and forth several times, and extends again. If in so doing it encounters a strong stimulus from the light a second time it draws back and tries once more.