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D. Baylor, A. Hodgkin (1973)
Detection and resolution of visual stimuli by turtle photoreceptorsThe Journal of Physiology, 234
F. Werblin (1979)
Time‐ and voltage‐dependent ionic components of the rod response.The Journal of Physiology, 294
P. Liebman (1972)
Microspectrophotometry of Photoreceptors
R. Normann, I. Perlman (1979)
The effects of background illumination on the photoresponses of red and green cones.The Journal of Physiology, 286
(1981)
Rod to double cone transmission in the retina of the tiger salamander
A. Bortoff, A. Norton (1967)
An electrical model of the vertebrate photoreceptor cell.Vision research, 7 3
P. Detwiler, A. Hodgkin (1979)
Electrical coupling between cones in turtle retina.The Journal of Physiology, 291
M. Dennis, P. Sargent (1979)
Loss of extrasynaptic acetylcholine sensitivity upon reinnervation of parasympathetic ganglion cells.The Journal of Physiology, 289
D. Baylor, M. Fuortes (1970)
Electrical responses of single cones in the retina of the turtleThe Journal of Physiology, 207
F. Hárosi (1975)
Absorption spectra and linear dichroism of some amphibian photoreceptorsThe Journal of General Physiology, 66
C. Bader, P. MacLeish, E. Schwartz (1979)
A voltage‐clamp study of the light response in solitary rods of the tiger salamander.The Journal of Physiology, 296
A. Hodgkin, A. Huxley (1952)
The components of membrane conductance in the giant axon of LoligoThe Journal of Physiology, 116
B. Frankenhaeuser (1962)
Potassium permeability in myelinated nerve fibres of Xenopus laevisThe Journal of Physiology, 160
A. Lasansky, P. Marchiafava (1974)
Light‐induced resistance changes in retinal rods and cones of the tiger SalamanderThe Journal of Physiology, 236
A. Hindmarsh, G. Byrne (1977)
EPISODE: an effective package for the integration of systems of ordinary differential equations. [For stiff or non-stiff problems, in FORTRAN for CDC or IBM computers; TSTEP, core integrator routine; CONVRT, to change between single and double precision coding]
F. Werblin (1978)
Transmission along and between rods in the tiger salamander retina.The Journal of Physiology, 280
D. Noble, R. Tsien (1968)
The kinetics and rectifier properties of the slow potassium current in cardiac Purkinje fibresThe Journal of Physiology, 195
D. Baylor, A. Hodgkin, T. Lamb (1974)
The electrical response of turtle cones to flashes and steps of lightThe Journal of Physiology, 242
J. Toyoda, H. Nosaki, T. Tomita (1969)
Light-induced resistance changes in single photoreceptors of Necturus and Gekko.Vision research, 9 4
T. Ebrey, B. Honig (1977)
New wavelength dependent visual pigment nomogramsVision Research, 17
F. Crescitelli (1972)
The Visual Cells and Visual Pigments of the Vertebrate Eye
G. Smelser (1943)
The Vertebrate Eye and Its Adaptive Radiation.Archives of Ophthalmology, 29
G. Fain (1976)
Sensitivity of toad rods: Dependence on wave‐length and background illumination.The Journal of Physiology, 261
D. Baylor, M. Fuortes, P. O’Bryan (1971)
Receptive fields of cones in the retina of the turtleThe Journal of Physiology, 214
P. Liebman, G. Entine (1968)
Visual pigments of frog and tadpole (Rana pipiens).Vision research, 8 7
P. Brown, I. Gibbons, G. Wald (1963)
THE VISUAL CELLS AND VISUAL PIGMENT OF THE MUDPUPPY, NECTURUSThe Journal of Cell Biology, 19
E. Schwartz (1975)
Cones excite rods in the retina of the turtle.The Journal of Physiology, 246
D. Attwell, Martin Wilson (1980)
Behaviour of the rod network in the tiger salamander retina mediated by membrane properties of individual rodsThe Journal of Physiology, 309
J. Schnapf, R. McBurney (1980)
Light-induced changes in membrane current in cone outer segments of tiger salamander and turtleNature, 287
P. O’Bryan (1973)
Properties of the depolarizing synaptic potential evoked by peripheral illumination in cones of the turtle retinaThe Journal of Physiology, 235
M. Fuortes, E. Schwartz, E. Simon (1973)
Colour‐dependence of cone responses in the turtle retinaThe Journal of Physiology, 234
1. The properties of isolated single cones were studied using the voltage‐clamp technique, with two micro‐electrodes inserted under visual control. 2. Single cones had input resistances, when impaled with two electrodes, of up to 270 MΩ. This is probably lower than the true membrane resistance, because of damage by the impaling electrodes. The cone capacitance was about 85 pF. 3. The cone membrane contains a time‐dependent current, IB, controlled by voltage, and a separate photosensitive current. 4. The gated current, IB, is an inward current with a reversal potential around ‐25 mV. It is activated by hyperpolarization over the range ‐30 to ‐80 mV, and at constant voltage obeys first order (exponential) kinetics. The gating time constant is typically 50 ms at the resting potential of ‐45 mV, rises to 170 ms at ‐70 mV, and decreases for further hyperpolarization. 5. The spectral sensitivity curve of the cone light response peaks at 620 nm wave‐length, and is narrower than the nomogram for vitamin A2‐based pigments. The light responses of isolated cones are spectrally univariant. 6. Voltage‐clamped photocurrents were recorded at various membrane potentials, for light steps of various intensities. The photocurrent reversed at around ‐8 mV. The time course of the photocurrent, for a given intensity, was approximately independent of voltage (although its magnitude was voltage‐dependent). The shape of the peak current—voltage relation of the light‐sensitive current was independent of light intensity (although its magnitude was intensity‐dependent). 7. These results can be explained if: (a) light simply changes the number of photosensitive channels open, without altering the properties of an open channel; (b) the reactions controlling the production of internal transmitter, the binding of internal transmitter to the photosensitive channels, and the closing and opening of the channels are unaffected by the electric field in the cone membrane, even though at least some of these reactions take place in the membrane. 8. IB plays only a small role in shaping the cone voltage response to light.
The Journal of Physiology – Wiley
Published: Jul 1, 1982
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