Abstract
The electroretinogram (ERG) evoked in the lobster by a short flash of light consists of a highly damped, slow oscillation of potential, triggered apparently by a single excitatory process. Near the threshold, only one wave may be evident; but as the intensity of stimulus rises, a prior wave appears, and grows so much more rapidly as to become dominant. Simultaneously third and later waves appear, so that at high intensities the response may include five to seven waves. Dark adaptation favors the second and later waves relative to the first; light adaptation tends to suppress them. On turning on a steady light the oscillations are superimposed on the early stages of development of a maintained, steady-state potential (on-response). Turning off the light causes a rapid fluctuation of potential followed by a similarly damped slow oscillation (off-response). These phenomena resemble in part oscillations recently observed in the b wave of the ERG of many vertebrates including man.
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Selected References
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- ARMINGTON J. C. Spectral sensitivity of the turtle, Pseudemys. J Comp Physiol Psychol. 1954 Feb;47(1):1–6. doi: 10.1037/h0053729. [DOI] [PubMed] [Google Scholar]
- AUERBACH E., GUGGENHEIM K., KAPLANSKY J., ROWE H. EFFECT OF PROTEIN DEPLETION ON THE ELECTRIC RESPONSE OF THE RETINA IN ALBINO RATS. J Physiol. 1964 Aug;172:417–424. doi: 10.1113/jphysiol.1964.sp007429. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Adrian E. D., Matthews R. The action of light on the eye: Part III. The interaction of retinal neurones. J Physiol. 1928 Jun 24;65(3):273–298. doi: 10.1113/jphysiol.1928.sp002475. [DOI] [PMC free article] [PubMed] [Google Scholar]
- BORNSCHEIN H., GOODMAN G. Studies of the a-wave in the human electroretinogram. AMA Arch Ophthalmol. 1957 Sep;58(3):431–437. doi: 10.1001/archopht.1957.00940010443019. [DOI] [PubMed] [Google Scholar]
- KENNEDY D., BRUNO M. S. The spectral sensitivity of crayfish and lobster vision. J Gen Physiol. 1961 Jul;44:1089–1102. doi: 10.1085/jgp.44.6.1089. [DOI] [PMC free article] [PubMed] [Google Scholar]
- KONISHI J. Electric response of visual center in fish, especially to colored light flash. Jpn J Physiol. 1960 Feb 29;10:13–27. doi: 10.2170/jjphysiol.10.13. [DOI] [PubMed] [Google Scholar]
- NAGAI T., PROSSER C. L. Electrical parameters of smooth muscle cells. Am J Physiol. 1963 May;204:915–924. doi: 10.1152/ajplegacy.1963.204.5.915. [DOI] [PubMed] [Google Scholar]
- WALD G., HUBBARD R. Visual pigment of a decapod crustacean: the lobster. Nature. 1957 Aug 10;180(4580):278–280. doi: 10.1038/180278a0. [DOI] [PubMed] [Google Scholar]
- WERMAN R., GRUNDFEST H. Graded and all-or-none electrogenesis in arthropod muscle. II. The effects of alkali-earth and onium ions on lobster muscle fibers. J Gen Physiol. 1961 May;44:997–1027. doi: 10.1085/jgp.44.5.997. [DOI] [PMC free article] [PubMed] [Google Scholar]
- YONEMURA D., MASUDA Y., HATTA M. The oscillatory potential in the electroretinogram. Jpn J Physiol. 1963 Apr 15;13:129–137. doi: 10.2170/jjphysiol.13.129. [DOI] [PubMed] [Google Scholar]
- YONEMURA D., TSUZUKI K., AOKI T. Clinical importance of the oscillatory potential in the human ERG. Acta Ophthalmol Suppl. 1962;Suppl 70:115–123. doi: 10.1111/j.1755-3768.1962.tb00313.x. [DOI] [PubMed] [Google Scholar]