Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1970-1974  (2)
  • 1973  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Thermodynamik des peripheren Sehprozesses (1973)
    Springer
    Cellular and molecular life sciences 29 (1973), S. 1349-1351 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In a range from 6 to 30°C, the influence of temperature on the relation between the light intensity and the amplitude of the b-wave of the exposure potential has been investigated for the isolated frog retina. Between 10 and 25°C, the gross activation energy of the response to light leads to a temperature coefficient which shows that the formation of the b-wave is mainly checked by diffusion processes. While at 6°C the b-wave has vanished, a complete delayed off-response can still be registered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01922810
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Influence of the external K+-concentration on the electrical activity and the Na+-, K+-content of the retinal tissue (1973)
    Springer
    Pflügers Archiv 341 (1973), S. 297-304 
    Details
    ISSN: 1432-2013
    Keywords: Isolated Retina ; External Potassium ; Retinal Na+-, K+-Content ; Exposure Potential ; Flame Photometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of the external K+-concentration in a range from 0 to 10 mMol/l on the exposure potential (ERG) and the Na+-, K+-distribution in the retinal tissue of Rana esculenta was investigated. After 45 min of perfusion with the test solution moist combustion of the tissue and analysis by flame photometry was carried out. At concentrations of less than 1 mMol/l an extensive loss of retinal potassium could be observed which corresponded to a slow and steady decrease of the exposure potential. Simultaneously the mean intracellular Na+-content increased. Above 2 mMol/l a rapid decline of the potentialΦ b to a constant level was recorded. At the same time there was a slight increase in retinal potassium and a decrease in sodium. The quick transition to steady values of the ERG at high external K+-concentrations is attributed to the limitation of the potassium uptake of retinal cells which brings about a constant distribution of electrolytes in a short time. The slow drop in potential at a low potassium content of the bathing solution is ascribed to the diffusion process of K+ through cellular membranes of the retina.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01023671
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...