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  • 1
    Electronic Resource
    Electronic Resource
    Thermoreceptors (1974)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 36 (1974), S. 233-249 
    Details
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ph.36.030174.001313
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Special dynamic characteristics of thermosensitive afferents from the ampullae of Lorenzini (1974)
    Springer
    Journal of comparative physiology 91 (1974), S. 241-246 
    Details
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary At different operating points of their steady state characteristics, about 12% of single-fibre afferents from isolated ampullae of Lorenzini in the dogfish (Scyliorhinus canicula) answering graded temperature steps in the sense of cold receptors at first, reversed the direction of their differential temperature sensitivity. During this process no significant differences in their impulse patterns as well as in the parameters of the single spike potential itself were observed. From a second group of afferents, only an inversed dynamic response (overshoot of neural activity after a warm stimulus and silent period after a cold stimulus) could be recorded. The reversed responses to temperature cannot be explained by a possible shift in electrical or mechanical stimulus parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00698055
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal cutaneous afferents in the trigeminal nucleus of the cat (1973)
    Springer
    Naturwissenschaften 60 (1973), S. 209-209 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00599448
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Plasma histamine determination in man and dog following the infusion of plasma substitutes: Models for histamine release under pathophysiological conditions (1973)
    Springer
    Inflammation research 3 (1973), S. 183-184 
    Details
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01965740
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Properties of warm receptors inBoa constrictor (1974)
    Springer
    Naturwissenschaften 61 (1974), S. 369-369 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00600315
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Hostaflon TF coating of tungsten sensory micro-needles (1974)
    Springer
    Pflügers Archiv 351 (1974), S. 357-360 
    Details
    ISSN: 1432-2013
    Keywords: Microelectrode ; Human Nerve Fibers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A method is described for the achievement of good adhesion and smooth coating of PTEE (Hostaflon TF) onto tungsten sensory micro needles, which are suitable for human sensory and muscle nerve investigations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00593322
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of calcium on afferent responses of the ampullae of Lorenzini (1973)
    Springer
    Pflügers Archiv 338 (1973), S. 281-287 
    Details
    ISSN: 1432-2013
    Keywords: Ampullae of Lorenzini ; Calcium Effects ; Thermosensitivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Afferent responses in single-fibre and multi-fibre preparations from isolated ampullae of Lorenzini to various concentrations of ionic calcium (from 0.2 g/l to 5.0 g/l) were investigated in the dogfish (Scylliorhinus canicula). At constant temperature (12.3° C), calcium concentrations between 0.2 and 1.6 g/l were practically ineffective. Concentrations between 1.8 and 5.0 g/l inhibited the static impulse discharge for time periods up to several minutes depending on the calcium charge. Concentration and diffusion parameters were decisive for the amount as well as the temporal course of this inhibition. Additional thermal or mechanical stimulation led to an answer superimposed on the effects of calcium. Calcium-free fluids produced a slight increase in average impulse rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00586069
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  • 8
    Electronic Resource
    Electronic Resource
    Dissociated loss of cold and warm sensibility during regional anaesthesia (1974)
    Springer
    Pflügers Archiv 349 (1974), S. 73-82 
    Details
    ISSN: 1432-2013
    Keywords: Differential Nerve Block ; Thermoreceptors ; Thermal Sensation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In 29Ss ulnar nerve block was performed by injection of mepivacaine in order to study the latency of warm and cold sensibility loss. Thermal stimuli of great amplitude and without perceptible tactile components were used. The conductivity of afferent fibres was tested by simple reaction time. Warm sensibility was blocked significantly earlier than cold sensibility. The loss of warm sensibility was preceded by the block of vasomotor efferents; simultaneously with the warm sensibility block, the sensation of a pin prick changed from sharp to blunt. When both warm and cold sensibility were completely blocked, touch was still perceived and the force of the hypothenar muscle group was reduced to 60% of its normal value. The present findings support the hypothesis that, in man, warm and cold sensations are mediated by two different groups of receptor neurones, and that at least part of the axons mediating cold sensations is myelinated whereas those mediating warm sensations are not. Thermal stimulation of cold sensitive slowly adapting mechanoreceptors did not lead to conscious sensations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587918
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Structure and function of cold receptors (1974)
    Springer
    Pflügers Archiv 352 (1974), S. 1-10 
    Details
    ISSN: 1432-2013
    Keywords: Thermoreceptors ; Cold Receptor ; Ultrastructure ; Receptor Morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Afferent impulses were recorded from single fibers serving cold and warm receptors in the skin of the cat's nose. The receptors were carefully tested for specificity and the receptive fields localized under the microscope with a microthermode. Each single fiber served one spot-like receptive field. The field was marked without damaging the nerve ending by inserting two thin stainless steel wires into the skin on both sides of the receptor. Investigation of semithin and ultrathin serial sections by light and electron microscopy revealed beneath each cold spot a dermal papilla which contained a single small myelinated fiber dividing into a number of unmyelinated terminals. Near the epidermis the receptor branches leave their Schwann cell envelope, penetrate the basal lamina of the epithelium, and their tips are invaginated into the cytoplasm of the basal epithelial cells. The basal lamina of the epithelium fuses with that of the receptor axon. The receptor axons contain numerous mitochondria, glycogen particles and a filamentous receptor matrix with vesicles of various sizes. The described structures were absent beneath the warm spots. In addition to the cold receptors, Merkel cell neurite complexes and lamellated encapsulated endings were found that are known to be mechanoreceptors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01061945
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Integrated static activity of the ampullae of Lorenzini after long-term exposure to various temperatures (1971)
    Springer
    Pflügers Archiv 323 (1971), S. 279-283 
    Details
    ISSN: 1432-2013
    Keywords: Ampullae of Lorenzini ; Temperature Adaptation ; Thermoreceptors ; Lorenzinische Ampullen ; Temperaturadaptation ; Thermoreceptoren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An zwei Populationen isolierter mandibularer Gruppen von Lorenzinischen Ampullen des Katzenhaies (Scylliorhinus canicula) wurde die integrierte statische Impulsfrequenz als Funktion der Temperatur zwischen 3 und 27°C untersucht. Eine Gruppe von Tieren war vorher für 2 Monate an 4°C, die andere Gruppe an 18°C adaptiert worden. Die Temperaturcharakteristik beider Ampullenpopulationen zeigte keinen signifikanten Unterschied; die mittleren Maxima der statischen Entladungsfrequenz lagen jeweils bei 19°C.
    Notes: Summary The integrated static frequency as a function of temperature between 3 and 27°C was investigated in two populations of isolated mandibular ampullae of Lorenzini in dogfishes (Scylliorhinus canicula). One group of animals was previously adapted for two months to 4°C, the other group to 18°C. There was no significant difference in the temperature characteristics, the temperatures of the average static maxima being 19°C for both populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00592398
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