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The postnatal development of the oscillatory potentials of the electroretinogram. V. Relation to the double peaked a‐wave
Author(s) -
Azazi M.,
Wachtmeister L.
Publication year - 1993
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1993.tb04956.x
Subject(s) - adaptation (eye) , physics , biology , optics
The postnatal development of the double peaked a‐wave and its relation to the oscillatory potentials of the rat electroretinogram was studied. The split a‐wave appeared one day later than the first oscillatory activity. The appearance and maturation of the positivity between the two a‐waves (a‐hump) was found to be similar to that of the first oscillatory potential, and the development of the second a‐wave showed similarities to that of the second oscillatory potential. Thus, we conclude that the double peaked a‐wave is closely related to the appearance of the two first oscillatory potentials. Secondly, the division of the a‐wave in the immature animal may be caused by the intrusion of the first oscillatory potential. Thirdly, the presence of a split a‐wave before spontaneous opening of the lid seems to indicate a state of comparatively progressed maturity of neuronal adaptation.