Miniature potentials, light adaptation and afterpotentials in locust retinula cells.

Light-Initiated Responses of Retinula and Eccentric Cells in the Limulus Lateral Eye

The relationship between retinula and eccentric cells in the lateral eye of Limulus polyphemus was studied using a double electrode technique which permitted simultaneous recording of light-initiated responses in two sense cells and the labeling of the cells for subsequent histological examination and identification. The following results were obtained: (a) light-initiated slow responses with a...

Slow and Spike Potentials Recorded from Retinula Cells of the Honeybee Drone in Response to Light

Responses to light recorded by means of intracellular microelectrodes in isolated heads kept in oxygenated Ringer solution consist of a slow depolarization. Light adaptation increases the rates of depolarization and repolarization and decreases the amplitude of the response. Qualitatively these changes are similar to those observed in Limulus by Fuortes and Hodgkin. They are rapidly reversible ...

Preliminary Studies on Antioxidative Potentials of Extracts of Defatted Locust Bean Condiment

Preliminary investigation on antioxidative potentials of defatted fermented locust bean extract in comparison to defatted non-fermented locust bean was conducted. Qualitative antioxidative assessment on the extract was accomplished by screening the phytochemical endowment, and similar bioactive components. Also some antioxidative indices were quantitatively evaluated. Results showed that the de...

Movement of palisade in locust retinula cells when illuminated.

Role of intracellular calcium and sodium in light adaptation in the retina of the honey bee drone (Apis mellifera, L)

In the honey bee drone, the decrease in sensitivity to light of a retinula cell exposed to background illumination was found to be accurately reflected by the difference in amplitude between the initial transient depolarization and the lowest steady depolarization evoked by the background light. It is shown that both the decrease in sensitivity to light and the accompanying drop in potential fr...