The effect of serotonin and octopamine on the optokinetic response of the crab Leptograpsus variegatus.
A standard optokinetic response of the ipsilateral and contralateral (driven) eyes of the crab Leptograpsus variegatus to a sinusoidally oscillating striped drum was established. Optokinetic responses were then measured of animals that had been treated by introducing serotonin and octopamine into the blood stream via the heart and also into the neural tissue of the optic lobes via a micropipette. Both serotonin and octopamine enhance the optokinetic effect when applied in low doses. Experiments show that serotonin is most likely acting closer to the sensory input in the optokinetic system.
Erber
J
J
School of Biological Science, University of New South Wales, Kensington, Australia.
Sandeman
D C
DC
D000818:Animals; D003386:Brachyura / Q000502:physiology*; D005133:Eye Movements / Q000187:drug effects*; D009473:Neuronal Plasticity; D009655:Octopamine / Q000494:pharmacology*; D010775:Photic Stimulation; D012701:Serotonin / Q000494:pharmacology*
D009655:Octopamine; D012701:Serotonin; C028435:2-octopamine