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Adaptation properties of the ERG in the grasshopper, Romalea microptera

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Abstract

The grasshopper ERG displays a rapid recovery of responsivity following the onset of a background light. Although observed earlier in skate and frog, this phenomenon has not previously been seen in an invertebrate. Furthermore, a period of hyperresponsivity exists in early dark adaptation and resembles that found in skate and frog. Thus, recovery in the light and hyperresponsivity in the dark seem to be corollaries of each other. Finally, spectral sensitivity of the ERG is determined and two peaks are found: one at 510 nm and the other at 360 nm. The former appears to be a rhodopsin-mediated sensitivity but the latter does not and they are not clearly separated by chromatic adaptation.

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Authors and Affiliations

  1. Institute of Molecular Biophysics Florida State University, 32306, Tallahassee, Florida, USA

    R. M. Bruckler & T. P. Williams

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  1. R. M. Bruckler
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  2. T. P. Williams
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Bruckler, R.M., Williams, T.P. Adaptation properties of the ERG in the grasshopper, Romalea microptera . Biophys. Struct. Mechanism 7, 205–208 (1981). https://doi.org/10.1007/BF00539180

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  • DOI: https://doi.org/10.1007/BF00539180

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