Human late-receptor potential and its clinical use in dyschromatopsia

1982 ◽  
Vol 7 (2) ◽  
pp. 165-167 ◽  
Author(s):  
Kazuo Kawasaki ◽  
Daizo Yonemura ◽  
Jhoji Tanabe ◽  
Hirohiko Nakazato ◽  
Izumi Kawaguchi ◽  
...  
Keyword(s):  
Receptor Potential ◽  
Clinical Use ◽  
Late 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

scholarly journals Antagonistic Components of the Late Receptor Potential in the Barnacle Photoreceptor Arising from Different Stages of the Pigment Process

1973 ◽  
Vol 62 (1) ◽  
pp. 105-128 ◽  
Author(s):  
S. Hochstein ◽  
B. Minke ◽  
P. Hillman
Keyword(s):  
Strong Dependence ◽  
Red Light ◽  
Receptor Potential ◽  
Photoreceptor Cells ◽  
The Other ◽  
Light Levels ◽  
Early Receptor Potential ◽  
Late Receptor Potential ◽  
A Cell ◽  
532 Nm

The late receptor potential (LRP) recorded in barnacle photoreceptor cells exhibits, at high light levels, a strong dependence on the color of the stimulus and of the preceding adaptation. Most strikingly, red illumination of a cell previously adapted to blue light results in a depolarization which may last for up to 30 min after the light goes off, while blue illumination of a cell previously adapted to red light cuts short this extended depolarization or prevents its induction by a closely following red light. Comparison of the action spectra for the stimulus-coincident LRP and for the extended depolarization and its curtailment with those previously measured for the early receptor potential (ERP) confirms that these phenomena derive from the same bi-stable pigment as the ERP. The stimulus-coincident response and the extended depolarization appear to arise from substantial activation of the stable 532 nm state of the pigment, while activation of the stable 495 state depresses or prevents the extended depolarization and probably also depresses the stimulus-coincident response. Since either process can precede the other, with mutually antagonistic effects, one is not simply the reversal of the other; they must be based on separate mechanisms. Furthermore, comparison with ERP kinetics shows that both processes involve mechanisms additional to the pigment changes, as seen in the ERP. A model is proposed and discussed for the LRP phenomena and their dependences on wavelength, intensity, and duration of illumination based on excitor-inhibitor interactions.

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