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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 362-362 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This effect was first described by Helmholtz2, but although he attributed it to accommodation, he did not give a definitive explanation of why the sectors appear to rotate. When the young emmetrope focuses on a near test object the amount of accommodation exerted is not constant. The lens is ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 1096-1097 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE photopigment rhodopsin has long been known to be the chemical basis of scotopic (twilight) vision, and its bleaching and resynthesis have generally been held to underlie the phenomenon of light- and dark-adaptation. It has never been possible, however, actually to measure the rhodopsin-level in ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 1121-1123 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In these experiments the pupil was dilated by instilling 2 per cent homatropine hydrobromide into the conjunctival sac. The instrument used to measure visual acuity at different luminances consisted of a tube 33 cm. long and 3 cm. in diameter. At one end of the tube was placed a disk, carrying ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 315 (1985), S. 780-780 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS is a collection of essays written by scientists who have accumulated age and wisdom and achieved success in their respective fields of neurosensory research. The editors have encouraged them to clothe their accounts with personal details of how, and why, they chose a particular research ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 353 (1991), S. 308-308 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Ramachandran and Gregory1 explored the intriguing question of how we "fill in"2 that part of a scene which is not sampled by the visual system - one example is the blind spot, discovered by Mariotte in 1660. Helmholtz3 reviewed the early literature but was unable to put forward a satisfactory ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 917-918 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sensation and Perception. By S. Coen , C. Porac and L. M. Ward. Pp.514. published by (Academic: New York, San Francisco and London, 1979) Hardback $14.95; £9.75; paperback £6.50. THIS textbook has several unusual features which make it a particularly useful teaching tool. ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 278 (1979), S. 106-106 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two recent books on sensory physiology have a similar aim and are therefore reviewed here together. The publishers have to be congratulated for producing two compact, well printed and well illustrated books. Jacqueline Ludel's Introduction to Sensory Processes (Freeman: San Francisco and London; ...
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 275 (1978), S. 541-542 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To test this, after becoming adapted to the dark, we viewed the oscilloscope through a neutral density wedge. Although persistence on the oscilloscope phosphor is brief, a collection of points of changing distribution but constant mean number appears continuously in view. This reflects the ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 267 (1977), S. 84-84 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS is an unusual and useful book. Its main value is that it focuses attention on the problem of how a human detects and recognises a target in adverse conditions. Although much of the work described was undertaken for military purposes, many of the results are pertinent to civilian life-for ...
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 278 (1979), S. 192-192 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Velocity match for gratings of different spatial frequencies-the dotted line is the true physical rate of revolution. The vertical bars are ±1 s.e. (n = 5). The diameter of the disks was 10cm. A 1-cycle deg"1 grating was used as reference and it was rotated at 1 revolution per min. A ...
    Type of Medium: Electronic Resource
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