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  • Cats  (23)
  • American Association for the Advancement of Science (AAAS)  (23)
  • Copernicus
  • 1985-1989
  • 1975-1979  (23)
  • 1950-1954
  • 1979  (23)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (23)
  • Copernicus
Years
  • 1985-1989
  • 1975-1979  (23)
  • 1950-1954
Year
  • 1
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    Pituitary-brain vascular relations: a new paradigm (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-04-06
    Description: Vascular casts of the pituitary gland have demonstrated a paucity of veins extending from the adenohypophysis to the systemic circulation and have suggested that some adenohypophyseal venous blood returns to the neurohypophysis. The neurohypophyseal capillary bed may function as a vascular switch and in this article a series of 14 questions are proposed regarding the vascular dynamics of the pituitary. Together these questions raise the larger question, namely, whether pituitary hormones are transported directly to the brain to modify brain function?〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bergland, R M -- Page, R B -- New York, N.Y. -- Science. 1979 Apr 6;204(4388):18-24.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/373118" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arteriovenous Anastomosis/anatomy & histology ; Capillaries/anatomy & histology ; Cats ; *Cerebrovascular Circulation ; Dogs ; Humans ; Hypothalamo-Hypophyseal System/blood supply ; Pituitary Gland/*blood supply ; Pituitary Gland, Anterior/blood supply ; Rats ; Species Specificity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Visual resolution and receptive field size: examination of two kinds of cat retinal ganglion cell (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-09-07
    Description: Intraocular recordings from brisk-sustained and brisk-transient ganglion cells in the cat's retina revealed a systematic increase in center size and decrease in spatial cut-off frequency with increasing distance from the area centralis. At any one eccentricity sizes of the centers of sustained and transient cells did not overlap, and the variation in cut-off frequency for each class was constrained to about one-half octave.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cleland, B G -- Harding, T H -- Tulunay-Keesey, U -- New York, N.Y. -- Science. 1979 Sep 7;205(4410):1015-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/472720" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats ; Evoked Potentials ; Ganglia/physiology ; Retina/cytology/*physiology ; Vision, Ocular/*physiology ; *Visual Fields
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Structure of physiologically identified X and Y cells in the cat's lateral geniculate nucleus (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-06-08
    Description: Horseradish peroxidase injected into 18 single, physiologically identified geniculate X and Y cells permitted a detailed morphological correlate to be determined for the physiological properties of each neuron. Class 1 morphological characteristics were associated with Y cells, class 3 with X cells, and class 2 structural traits were seen in both physiological types.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Friedlander, M J -- Lin, C S -- Sherman, S M -- New York, N.Y. -- Science. 1979 Jun 8;204(4397):1114-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/451559" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats ; Geniculate Bodies/*cytology/physiology ; Horseradish Peroxidase ; Interneurons/cytology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Cortical plasticity in monocularly deprived immobilized kittens depends on eye movement (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-11-30
    Description: A marked reduction of binocular cells in striate cortex is found if 4-week-old kittens are visually stimulated monocularly while anesthetized and held in a stereotaxic apparatus. If the kittens are paralyzed and artificially respirated, changes are not found unless an eye is moved mechanically. It appears that eye movement and visual stimulation are necessary conditions for deactivation of binocular connections, but neither is sufficient to induce such changes alone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freeman, R D -- Bonds, A B -- New York, N.Y. -- Science. 1979 Nov 30;206(4422):1093-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/493996" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats ; Evoked Potentials ; *Eye Movements ; Functional Laterality ; Immobilization ; Paralysis/physiopathology ; Visual Cortex/*growth & development/physiology ; Visual Pathways/*growth & development
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Muscle fiber regeneration after transplantation: prediction of structure and physiology from electromyograms (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-06-08
    Description: Digitized electromyographic activity of transplanted extensor digitorum longus (EDL) muscles in cats differs from that of control EDL and anterior tibialis muscles lying adjacent to transplanted EDL muscles. In autotransplanted muscles, the cross-sectional area of the fibers shows a negative correlation with mean spike frequency and a positive correlation with mean amplitude. The mean frequency-amplitude products correlate with isometric tetanic tensions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gorniak, G C -- Gans, C -- Faulkner, J A -- New York, N.Y. -- Science. 1979 Jun 8;204(4397):1085-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/451552" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Cats ; Electrodes ; Electromyography/methods ; Muscles/cytology/physiology/*transplantation ; *Regeneration ; Transplantation, Autologous
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Alteration of cortical orientation selectivity: importance of asymmetric input (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-06-08
    Description: Rearing cats so that each of the two eyes sees stripes of a different orientation alters the orientation preference of visual cortex cells. This result can be obtained by rearing the cats in striped cylinders or with goggles attached to their faces, but a tighter control of orientation preference is achieved by the goggles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gordon, B -- Presson, J -- Packwood, J -- Scheer, R -- New York, N.Y. -- Science. 1979 Jun 8;204(4397):1109-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/451557" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats ; Functional Laterality ; Orientation/*physiology ; Visual Cortex/cytology/*growth & development/physiology ; Visual Perception/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Tissue perfusion rate determined from the decay of oxygen-15 activity after photon activation in situ (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-06-15
    Description: Rates of cerebral perfusion were obtained from measurements of the disappearance (wash-out) of oxygen-15 after in situ tissue activation with 45-million-volt x-rays. In an anesthetized cat, typical values were 90 milliliters per minute per 100 grams of tissue, with 55 percent wash-out. In a specific radiotherapy patient, the value was 65 milliliters per minute per 100 grams of tissue, with 63 percent wash-out of oxygen-15 through incorporation into tissue water.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hughes, W L -- Nussbaum, G H -- Connolly, R -- Emami, B -- Reilly, P -- New York, N.Y. -- Science. 1979 Jun 15;204(4398):1215-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/451567" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*blood supply ; Cats ; Humans ; Neoplasms/blood supply ; Oxygen/*blood/radiation effects ; Oxygen Radioisotopes ; *Regional Blood Flow ; X-Rays
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    Lateral geniculate nucleus in dark-reared cats: loss of Y cells without changes in cell size (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-03-30
    Description: In cats reared in the dark from birth until 4 months of age, the dorsal lateral geniculate nucleus contained few normal Y cells in either the binocular or monocular segments. Although most of the neurons appeared to be normal X cells unaffected by light deprivation, many cells with abnormal receptive field and response charcteristics were encountered. These effects were permanent, since 1 to 2 years of normal visual experience following initial light deprivation did not lead to any functional recovery. The sizes of cell bodies in cats reared in the dark were similar to those of normal animals, an indication that changes in geniculate cell physiology need not be related to changes in cell size.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kratz, K E -- Sherman, S M -- Kalil, R -- New York, N.Y. -- Science. 1979 Mar 30;203(4387):1353-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/424758" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats ; Darkness ; Functional Laterality ; Geniculate Bodies/*cytology/growth & development ; *Vision, Ocular ; Visual Pathways/cytology/*growth & development
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Reversal potential for noradrenaline-induced hyperpolarization of spinal motoneurons (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-07-27
    Description: By using two separate electrodes with tips inside a single feline motoneuron, current-voltage characteristics were studied during extracellular iontophoresis of noradrenaline. The usually observed hyperpolarization was accompanied by an increase in membrane resistance and became larger with polarizing and smaller with depolarizing currents. During large depolarizing current injections, the noradrenaline-induced potential reversed its direction, usually at a membrane potential of about -20 millivolts. These data are compatible with the concept that noradrenaline hyperpolarizes nerve cells by decreasing resting membrane conductances to sodium and potassium ions. The observation could also be explained by a nonspecific decrease in ion permeability that is associated with a hyperpolarization due to sodium pump activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, K C -- Engberg, I -- New York, N.Y. -- Science. 1979 Jul 27;205(4404):422-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/451613" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cats ; Membrane Potentials/drug effects ; Neurons/drug effects/*physiology ; Norepinephrine/*pharmacology ; Potassium/metabolism ; Sodium/metabolism ; Spinal Cord/drug effects/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Functional organization of lateral geniculate cells following removal of visual cortex in the newborn kitten (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-11-09
    Description: When the visual cortex of a newborn kitten is removed, most neurons in the dorsal lateral geniculate nucleus degenerate, but a small population of large cells is spared. Electrophysiological recording revealed that detailed visual topography in the nucleus is abnormal and that single cells have unusually large receptive fields. These results suggest that optic axons deprived of their normal synaptic targets rearrange their connections to converge on local surviving neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murphy, E H -- Kalil, R -- New York, N.Y. -- Science. 1979 Nov 9;206(4419):713-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/493978" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn/anatomy & histology ; Cats ; Functional Laterality ; Geniculate Bodies/*cytology ; Nerve Degeneration ; Visual Cortex/*cytology ; Visual Pathways/*cytology/growth & development
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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