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Why Joseph Erlanger Rejected the Local Circuit Theory of Nerve Impulse Propagation
Why Joseph Erlanger Rejected the Local Circuit Theory of Nerve Impulse Propagation Greg Gandenberger University of Pittsburgh, Department of History and Philosophy of Science 1017 Cathedral of Learning, Pittsburgh, PA 15260. [email protected] Abstract In the 1920s and 1930s, Joseph Erlanger and his colleagues expressed doubts about the local circuit theory of nerve impulse propagation in some of their publications. In 1934, their scepticism inspired Alan Hodgkin to begin a series of experiments that are generally regarded as providing strong support for the local circuit theory. Hodgkin’s experiments are well known, but the nature and sources of Erlanger’s scepticism are not. In the mid-1920s, Erlanger believed that oscillograph recordings indicated that the eddy currents generated by action currents are too small to propagate the nerve impulse as the local circuit theory proposes. In the 1930s, his fundamental objection to the local circuit theory was his belief that eddy currents large enough to propagate nerve impulses would dissipate a large amount of energy and produce uncontrolled stray effects. However, a 1936 discovery led him to admit that eddy currents do at least increase the excitability of an active fiber ahead of the action current wave. His opposition to the local circuit theory diminished further as a result of several developments between late 1938 and early 1939, including most notably Hodgkin demonstration that the resistance of the medium outside the active nerve affects propagation velocity. Word Count: 7467 Keywords Joseph Erlanger; Alan Hodgkin; local circuit theory; membrane theory; St. Louis School; electrophysiology 1. Introduction Early in his 1934-1935 year as a Cambridge undergraduate, Alan Hodgkin discovered that a blocked nerve impulse increases the excitability of the nerve beyond the block. -
The Creation of Neuroscience
The Creation of Neuroscience The Society for Neuroscience and the Quest for Disciplinary Unity 1969-1995 Introduction rom the molecular biology of a single neuron to the breathtakingly complex circuitry of the entire human nervous system, our understanding of the brain and how it works has undergone radical F changes over the past century. These advances have brought us tantalizingly closer to genu- inely mechanistic and scientifically rigorous explanations of how the brain’s roughly 100 billion neurons, interacting through trillions of synaptic connections, function both as single units and as larger ensem- bles. The professional field of neuroscience, in keeping pace with these important scientific develop- ments, has dramatically reshaped the organization of biological sciences across the globe over the last 50 years. Much like physics during its dominant era in the 1950s and 1960s, neuroscience has become the leading scientific discipline with regard to funding, numbers of scientists, and numbers of trainees. Furthermore, neuroscience as fact, explanation, and myth has just as dramatically redrawn our cultural landscape and redefined how Western popular culture understands who we are as individuals. In the 1950s, especially in the United States, Freud and his successors stood at the center of all cultural expla- nations for psychological suffering. In the new millennium, we perceive such suffering as erupting no longer from a repressed unconscious but, instead, from a pathophysiology rooted in and caused by brain abnormalities and dysfunctions. Indeed, the normal as well as the pathological have become thoroughly neurobiological in the last several decades. In the process, entirely new vistas have opened up in fields ranging from neuroeconomics and neurophilosophy to consumer products, as exemplified by an entire line of soft drinks advertised as offering “neuro” benefits. -
Advertising (PDF)
Neuroscience 2013 SEE YOU IN San Diego November 9 – 13, 2013 Join the Society for Neuroscience Are you an SfN member? Join now and save on annual meeting registration. You’ll also enjoy these member-only benefits: • Abstract submission — only SfN members can submit abstracts for the annual meeting • Lower registration rates and more housing choices for the annual meeting • The Journal of Neuroscience — access The Journal online and receive a discounted subscription on the print version • Free essential color charges for The Journal of Neuroscience manuscripts, when first and last authors are members • Free online access to the European Journal of Neuroscience • Premium services on NeuroJobs, SfN’s online career resource • Member newsletters, including Neuroscience Quarterly and Nexus If you are not a member or let your membership lapse, there’s never been a better time to join or renew. Visit www.sfn.org/joinnow and start receiving your member benefits today. www.sfn.org/joinnow membership_full_page_ad.indd 1 1/25/10 2:27:58 PM The #1 Cited Journal in Neuroscience* Read The Journal of Neuroscience every week to keep up on what’s happening in the field. s4HENUMBERONECITEDJOURNAL INNEUROSCIENCE s4HEMOSTNEUROSCIENCEARTICLES PUBLISHEDEACHYEARNEARLY in 2011 s )MPACTFACTOR s 0UBLISHEDTIMESAYEAR ,EARNMOREABOUTMEMBERAND INSTITUTIONALSUBSCRIPTIONSAT *.EUROSCIORGSUBSCRIPTIONS *ISI Journal Citation Reports, 2011 The Journal of Neuroscience 4HE/FlCIAL*OURNALOFTHE3OCIETYFOR.EUROSCIENCE THE HISTORY OF NEUROSCIENCE IN AUTOBIOGRAPHY THE LIVES AND DISCOVERIES OF EMINENT SENIOR NEUROSCIENTISTS CAPTURED IN AUTOBIOGRAPHICAL BOOKS AND VIDEOS The History of Neuroscience in Autobiography Series Edited by Larry R. Squire Outstanding neuroscientists tell the stories of their scientific work in this fascinating series of autobiographical essays. -
書 名 等 発行年 出版社 受賞年 備考 N1 Ueber Das Zustandekommen Der
書 名 等 発行年 出版社 受賞年 備考 Ueber das Zustandekommen der Diphtherie-immunitat und der Tetanus-Immunitat bei thieren / Emil Adolf N1 1890 Georg thieme 1901 von Behring N2 Diphtherie und tetanus immunitaet / Emil Adolf von Behring und Kitasato 19-- [Akitomo Matsuki] 1901 Malarial fever its cause, prevention and treatment containing full details for the use of travellers, University press of N3 1902 1902 sportsmen, soldiers, and residents in malarious places / by Ronald Ross liverpool Ueber die Anwendung von concentrirten chemischen Lichtstrahlen in der Medicin / von Prof. Dr. Niels N4 1899 F.C.W.Vogel 1903 Ryberg Finsen Mit 4 Abbildungen und 2 Tafeln Twenty-five years of objective study of the higher nervous activity (behaviour) of animals / Ivan N5 Petrovitch Pavlov ; translated and edited by W. Horsley Gantt ; with the collaboration of G. Volborth ; and c1928 International Publishing 1904 an introduction by Walter B. Cannon Conditioned reflexes : an investigation of the physiological activity of the cerebral cortex / by Ivan Oxford University N6 1927 1904 Petrovitch Pavlov ; translated and edited by G.V. Anrep Press N7 Die Ätiologie und die Bekämpfung der Tuberkulose / Robert Koch ; eingeleitet von M. Kirchner 1912 J.A.Barth 1905 N8 Neue Darstellung vom histologischen Bau des Centralnervensystems / von Santiago Ramón y Cajal 1893 Veit 1906 Traité des fiévres palustres : avec la description des microbes du paludisme / par Charles Louis Alphonse N9 1884 Octave Doin 1907 Laveran N10 Embryologie des Scorpions / von Ilya Ilyich Mechnikov 1870 Wilhelm Engelmann 1908 Immunität bei Infektionskrankheiten / Ilya Ilyich Mechnikov ; einzig autorisierte übersetzung von Julius N11 1902 Gustav Fischer 1908 Meyer Die experimentelle Chemotherapie der Spirillosen : Syphilis, Rückfallfieber, Hühnerspirillose, Frambösie / N12 1910 J.Springer 1908 von Paul Ehrlich und S. -
A Scientist's Life for Me
NATURE|Vol 455|16 October 2008 AUTUMN BOOKS OPINION A scientist’s life for me Forty years after the publication of James Watson’s The Double Helix, Georgina Ferry asks why the life stories of so few scientists make it into the bookshops. In 1968 Peter Medawar, Nobel prizewinner and author of many witty reflections on sci- ence and its practitioners, consented to write a preface to Ronald Clark’s biography of the influential British biologist J. B. S. Haldane. Imagine Clark’s consternation when he read its opening line: “The lives of academics, considered as Lives, almost always make dull reading.” Later, Medawar recycled the opening paragraph for an essay in his col- lection Pluto’s Republic (1982), claiming further that scientists’ lives, unlike those of “artists and men of letters”, were “not a source of cultural insight”. James Watson’s The Double Helix, a book that broke the mould of scientific life-writing, also appeared in 1968. It provided abundant ‘cultural insight’ into the combination of good contacts, brilliance, luck, hard work and ruth- less competitiveness that brought to light the DNA structure. It was panned by many of Watson’s contemporaries — if Francis Crick had got his way, the book would never have been published. Yet in his own memoir What modern laboratory Mad Pursuit (1988), Crick later admitted that life? Scientific life-writing is now publishers. Most people have he was wrong: “I now appreciate how skilful a small and shrinking enterprise. Publishers heard of very few scientists, so those that they Jim was, not only in making the book read agree that the market for scholarly biography do recognize — Isaac Newton, Charles Dar- like a detective story, but also by managing to has suffered from the onslaught of celebrity win and Albert Einstein — seem the safest bets. -
UNESCO Kalinga Prize Winner – 1985 Sir Peter Brian Medawar Nobel Laureate
Glossary on Kalinga Prize Laureates UNESCO Kalinga Prize Winner – 1985 Sir Peter Brian Medawar Nobel Laureate An Eminent British Scientist of Lebanese Origin, A Biologist and Nobel Laureate in Physiology or Medicine – 1960 [Born : February 28, 1915, Petropolis, Rio de Janeiro, Brazil Died : October 2, 1987 (aged 72) London, United Kingdom] Today the world Changes so quickly that in growing up we take leave not just of youth but of the world we were young in . I suppose we all realize the degree to which fear and resentment of what is new is really a lament for the memories of our childhood. ...Peter Medawar I can not give any scientist of any age better advice than this: the intensity of a conviction that a hypothesis is true has no bearing over whether it is true or not. …Peter Medawar If Politics is the art of the Possible, research is surely the art of the soluble. Both are immensely Practical minded affairs . ...Peter Medawar 1 Glossary on Kalinga Prize Laureates Peter Medawar A Brief Biographical Sketch Born : February 28, 1915 Rio de Janeiro, Brazil Died : October 2, 1987 (aged 72) London, United Kingdom Notable Prizes : Nobel Prize in Physiology or Medicine (1960), Kalinga Prize, 1985 Sir Peter Brian Medawar (February 28, 1915 – acquired immunological tolerance. This work was October 2, 1987) was a Briazilian – born British used in dealing with skin grafts required after burns. scientist best known for his work on how the immune Medawar’s work resulted in a shift of emphasis in system rejects or accepts tissue transplants. -
Krogh's Principle
Introduction to Neuroscience: Behavioral Neuroscience Neuroethology, Comparative Neuroscience, Natural Neuroscience Nachum Ulanovsky Department of Neurobiology, Weizmann Institute of Science 2017-2018, 2nd semester Principles of Neuroethology Neuroethology seeks to understand the mechanisms by which the Neurobiology central nervous system controls the Neuroethology Ethology natural behavior of animals. • Focus on Natural behaviors: Choosing to study a well-defined and reproducible yet natural behavior (either Innate or Learned behavior) • Need to study thoroughly the animal’s behavior, including in the field: Neuroethology starts with a good understanding of Ethology. • If you study the animals in the lab, you need to keep them in conditions as natural as possible, to avoid the occurrence of unnatural behaviors. • Krogh’s principle 1 Krogh’s principle August Krogh Nobel prize 1920 “For such a large number of problems there will be some animal of choice or a few such animals on which it can be most conveniently studied. Many years ago when my teacher, Christian Bohr, was interested in the respiratory mechanism of the lung and devised the method of studying the exchange through each lung separately, he found that a certain kind of tortoise possessed a trachea dividing into the main bronchi high up in the neck, and we used to say as a laboratory joke that this animal had been created expressly for the purposes of respiration physiology. I have no doubt that there is quite a number of animals which are similarly "created" for special physiological -
L#F:#Llil'c'r'fex Artof Scientificendeavour
Featrrt Manchestermeeting Ca2*phase es emerge Aminoacidtransporters l#f:#llil'c'r'fex Artof scientificendeavour )-.----- '^r1-'/4 ij-- * © Jenny Hersson-Ringskog ‘My time is up and very glad I am, because I have been leading myself right up to a domain on which I should not dare to trespass, not even in an Inaugural Lecture. This domain contains the awkward problems of mind and matter about which so much has been talked and so little can be said, and having told you of my pedestrian disposition, I hope you will give me leave to stop at this point and not to hazard any further guesses.’ (closing words of Bernard Katz’s Inaugural Lecture, 1952) PHYSIOLOGYNEWS Contents The Society Dog Published quarterly by the Physiological Society Contributions and Queries Executive Editor Linda Rimmer The Physiological Society Editorial 3 Publications Office Printing House Manchester meeting Shaftesbury Road Physiology and Pharmacology in Manchester Arthur Weston 4 Cambridge CB2 2BS Tel: 01223 325 524 Features 2+ Fax: 01223 312 849 Ca phase waves emerge Dirk van Helden, Mohammed S. Imtiaz 7 Email: [email protected] Role of cationic amino acid transporters in the regulation of nitric oxide The society web server: http://www.physoc.org synthesis in vascular cells Anwar R. Baydoun, Giovanni E. Mann 12 Not for giant axons only Andrew Packard 16 Magazine Editorial Board Editor Colour and form in the cortex Daniel Kiper 19 Bill Winlow (Prime Medica, Knutsford) Deputy Editor Images of physiology Thelma Lovick 21 Austin Elliott (University of Manchester) Members Affiliate News Munir Hussain (University of Liverpool) The art of scientific endeavour Keri Page 23 John Lee (Rotherham General Hospital) Thelma Lovick (University of Birmingham) Letters to the Editor 25 Keri Page (University of Cambridge) Society News © 2003 The Physiological Society ISSN 1476-7996 Review of Society grants Maggie Leggett 26 Biosciences Federation Maggie Leggett 27 The Society permits the single copying of Hot Topics Brenda Costall 27 individual articles for private study or research. -
Illustrations from the Wellcome Institute Library the Chain Papers*
Medical History, 1983, 27:434-435 ILLUSTRATIONS FROM THE WELLCOME INSTITUTE LIBRARY THE CHAIN PAPERS* THE three men who shared the Nobel Prize in October 1945 for their work on penicillin could scarcely have differed more in their backgrounds and characters. Fleming was sixty-four years old by then; the son of a Scottish farmer, he was a retiring man, not given to conversation. By contrast, Florey, then aged forty-seven, was the son of a wealthy Australian boot and shoe manufacturer; aggressively ambitious, his achievements and intellect were later to secure him the Presidency of the Royal Society. Then there was Chain - a mere thirty-nine years old - a Jewish refugee of Russian origin, who still had major work on penicillin ahead of him; his ambition was mixed with an independence and volubility that was to lead him into conflict with the scientific/medical establishment. Fleming has been the subject of many biographies, mostly hagiographical. Florey's role in the penicillin story was recently reassessed in Gwyn Macfarlane's excellent Howard Florey. The making ofa great scientist (Oxford University Press, 1979). Sir Ernst Boris Chain died in 1979, and his biography is being written by Ronald W. Clark. This, together with future research on Chain's papers, will enable a fuller assessment to be made of the role and character of the youngest of the three scientists. The Chain papers, recently given by Lady Chain to the Contemporary Medical Archives Centre, form an extensive collection of some sixty-nine boxes, comprising material from Chain's personal and professional life. -
List of Entries
List of Entries Essays are shown in bold A Afferent Fibers (Neurons) Acid-Sensing Ion Channels AFibers(A-Fibers) NICOLAS VOILLEY,MICHEL LAZDUNSKI A Beta(β) Afferent Fibers Acinar Cell Injury A Delta(δ) Afferent Fibers (Axons) Acrylamide A Delta(δ)-Mechanoheat Receptor Acting-Out A Delta(δ)-Mechanoreceptor Action AAV Action Potential Abacterial Meningitis Action Potential Conduction of C-Fibres Abdominal Skin Reflex Action Potential in Different Nociceptor Populations Abduction Actiq® Aberrant Drug-Related Behaviors ® Ablation Activa Abnormal Illness Affirming States Activation Threshold Abnormal Illness Behavior Activation/Reassurance GEOFFREY HARDING Abnormal Illness Behaviour of the Unconsciously Motivated, Somatically Focussed Type Active Abnormal Temporal Summation Active Inhibition Abnormal Ureteric Peristalsis in Stone Rats Active Locus Abscess Active Myofascial Trigger Point Absolute Detection Threshold Activities of Daily Living Absorption Activity ACC Activity Limitations Accelerated Recovery Programs Activity Measurement Acceleration-Deceleration Injury Activity Mobilization Accelerometer Activity-Dependent Plasticity Accommodation (of a Nerve Fiber) Acupuncture Acculturation Acupuncture Efficacy EDZARD ERNST Accuracy and Reliability of Memory Acupuncture Mechanisms β ACE-Inhibitors, Beta( )-Blockers CHRISTER P.O. C ARLSSON Acetaminophen Acupuncture-Like TENS Acetylation Acute Backache Acetylcholine Acute Experimental Monoarthritis Acetylcholine Receptors Acute Experimental -
The New Science of Neurocoaching
The New Science of Neurocoaching By Robert I Holmes Four years ago executives around the world were asked by Sherpa Coaching about what sort of background they thought would be helpful for a coach. Psychology and counselling came in as least desirable on the list. However this year's Executive Survey (2014) by the same firm found that neuroscience has topped the field of desirable backgrounds. What’s true for the goose is also true for the gander… 76% of coaches surveyed said neuroscience should play a strong role in coaching too. Coaches are now gearing up and I am no exception! Our company have become founding members of the Neuro Coaching Institute in Australia. What exactly is neurocoaching? Well it is the latest in a long line of brain related disciplines that gather under the banner of “neuroscience”. Let’s talk about that for a moment. Broadly defined, neuroscience is a combination of medicine, physiology, applied psychology, immunology, the study of human behaviour and some hard core imaging in big, white, expensive machines. The industry has existed since the 1850’s (obviously without the machines) and has evolved over four distinct eras. These are of interest because when you’re reading the literature or chatting to a colleague about this fascinating subject you can hear which of these eras they are coming from. It’s easy to get lost in the world of “neuro” everything, so here’s a dummies guide to the departments in this giant industry… Mechanics. People have been cutting up the brain and describing its components since the time of the Egyptians. -
FY2006 Society for Neuroscience Annual Report
Navigating A Changing Landscape FY2006 Annual Report 2005–2006 Society for 2005–2006 Society Past Presidents Neuroscience Council for Neuroscience Committee Chairs Carol A. Barnes, PhD, 2004–05 OFFICERS Anne B. Young, MD, PhD, 2003–04 Stephen F. Heinemann, PhD Darwin K. Berg, PhD Huda Akil, PhD, 2002–03 President Audit Committee Fred H. Gage, PhD, 2001–02 David Van Essen, PhD John H. Morrison, PhD Donald L. Price, MD, 2000–01 President-Elect Committee on Animals in Research Dennis W. Choi, MD, PhD, 1999–00 Carol A. Barnes, PhD Irwin B. Levitan, PhD Edward G. Jones, MD, DPhil, 1998–99 Past President Committee on Committees Lorne M. Mendell, PhD, 1997–98 Bruce S. McEwen, PhD, 1996–97 Michael E. Goldberg, MD William J. Martin, PhD Treasurer Committee on Diversity in Neuroscience Pasko Rakic, MD, PhD, 1995–96 Carla J. Shatz, PhD, 1994–95 Christine M. Gall, PhD Rita J. Balice-Gordon, PhD Larry R. Squire, PhD, 1993–94 Treasurer-Elect Judy Illes, PhD (Co-chairs) Committee on Women in Neuroscience Ira B. Black, MD, 1992–93 William T. Greenough, PhD Joseph T. Coyle, MD, 1991–92 Past Treasurer Michael E. Goldberg, MD Robert H. Wurtz, PhD, 1990–91 Finance Committee Irwin B. Levitan, PhD Patricia S. Goldman-Rakic, PhD, 1989–90 Secretary Mahlon R. DeLong, MD David H. Hubel, MD, 1988–89 Government and Public Affairs Committee Albert J. Aguayo, MD, 1987–88 COUNCILORS Darwin K. Berg, PhD Laurence Abbott, PhD Mortimer Mishkin, PhD, 1986–87 Information Technology Committee Bernice Grafstein, PhD, 1985–86 Joanne E. Berger-Sweeney, PhD William D.