scholarly journals ROD LATE RECEPTOR POTENTIAL AND RHODOPSIN CONCENTRATION OF AN ISOLATED FROG RETINA

1975 ◽  
Vol 25 (2) ◽  
pp. 123-133 ◽  
Author(s):  
Tetsuji MATSUURA
Keyword(s):  
Receptor Potential ◽  
Frog Retina ◽  
Late Receptor Potential

Suppression of cone-driven responses by rods in the isolated frog retina

1988 ◽  
Vol 1 (4) ◽  
pp. 331-338 ◽  
Author(s):  
Cun-Jian Dong ◽  
Hao-Hua Qian ◽  
John S. McReynolds ◽  
Xiong-Li Yang ◽  
Yu-Min Liu
Keyword(s):  
Dark Adaptation ◽  
Visual Pigment ◽  
Pigment Epithelium ◽  
Signal Transmission ◽  
Receptor Potential ◽  
Response Sensitivity ◽  
Long Wavelength ◽  
Negligible Amount ◽  
Frog Retina ◽  
Time Courses

AbstractThe sensitivity of rod- and cone-driven responses was studied in the isolated frog retina during the period of rapid dark adaptation following a conditioning flash which bleached a negligible amount of visual pigment. Following a conditioning flash, cone-driven b-wave responses were first enhanced and then depressed. The time courses of the enhancement and subsequent depression of cone-drive responses varies greatly with the intensity and wavelength of the conditioning flash, but were identical when the conditioning' flashes were matched for equal excitation of 502 nm rods. These changes in cone-driven response sensitivity were correlated with the desensitization and recovery of rods following the conditioning flash. When signal transmission from rods to second-order cells was interrupted by the addition of L-glutamate, the conditioning flash did not produce the above-described enhancement and subsequent depression of long-wavelength receptor potential responses. The suppression of cone-driven response therefore appears to be due to a synaptically mediated influence from 502 nm rods which is maximal when the rods are in the dark-adapted state, with little or no contribution from 433 nm rods, and no involvement of the pigment epithelium.

scholarly journals SOME PRELIMINARY OBSERVATIONS ON THE EARLY RECEPTOR POTENTIAL OF THE ISOLATED FROG RETINA

1968 ◽  
Vol 18 (5) ◽  
pp. 642-654 ◽  
Author(s):  
Isao HANAWA ◽  
Katsuhiko MATSUMURA ◽  
Tetsuji MATSUURA
Keyword(s):  
Receptor Potential ◽  
Frog Retina ◽  
Early Receptor Potential

scholarly journals Rapid Dark Recovery of the Invertebrate Early Receptor Potential

1973 ◽  
Vol 62 (1) ◽  
pp. 77-86 ◽  
Author(s):  
Peter Hillman ◽  
F. A. Dodge ◽  
S. Hochstein ◽  
B. W. Knight ◽  
B. Minke
Keyword(s):  
Intracellular Recording ◽  
Dark Adaptation ◽  
Receptor Potential ◽  
Visual Pigments ◽  
The State ◽  
Total Recovery ◽  
Time Constants ◽  
Early Receptor Potential ◽  
Late Receptor Potential

The recovery in the dark of the early receptor potential, as a direct manifestation of the state of the visual pigments, has been studied by intracellular recording in the ventral photoreceptors of Limulus and lateral photoreceptors of Balanus. The recovery is exponential with 1/e time constants of about 80 ms at 24°C for both preparations and 1800 ms at 4°C for Balanus. The 24°C rate extrapolates to total recovery of the pigment within 2 s. The later part of the dark adaptation of the late receptor potential, which may take from seconds to minutes in these preparations, appears thus to be unrelated to the state of the pigment.

Responses of Barnacle Photoreceptors to High Energy Flashes of Short Duration

1978 ◽  
Vol 33 (7-8) ◽  
pp. 600-604
Author(s):  
Christof C. Krischer ◽  
R. D. Dahl ◽  
M. Körfer
Keyword(s):  
Kinetic Model ◽  
Short Duration ◽  
Receptor Potential ◽  
High Energy ◽  
Ringer Solution ◽  
Time Span ◽  
Stable States ◽  
Early Receptor Potential ◽  
Late Receptor Potential ◽  
Light Flashes

Abstract In chromatic adapted barnacle median and lateral photo­receptors the two stable states of the photopigment (rhodopsin R and metarhodopsin M) were interconverted with intense, colored light flashes of 1 ms duration. Only after conversion of the red adapted photoreceptor in K+-Ringer solution with an intense flash the negative early receptor potential, ERP (of R) gradually appeared detected with an indicator flash. For the opposite conversion (blue adapted, R→M) the gradual appearence of the positive ERP (M) was not measurable in the same time span. In artificial seawater all flash stimuli yielded - irrespective of color - the transient component of the late receptor potential (LRP). ERP results for the lateral photoreceptor are dis­cussed in view of an existing kinetic model and an attempt is made to give an explanation which covers the new LRP transient and ERP results for both types of photoreceptor (appendix).

The generation of the late receptor potential: An excitation-inhibition phenomenon

1972 ◽  
Vol 12 (9) ◽  
pp. 1519-1531 ◽  
Author(s):  
Arnold J. Sillman ◽  
W. Geoffrey Owen ◽  
Hector R. Fernandez
Keyword(s):  
Receptor Potential ◽  
Late Receptor Potential
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